Bearing Tolerance Chart Explained

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Bearing Tolerance Chart Explained

Picture of Richard Richard : Aug 24, 2025 11:12:34 PM

Bearing Tolerance

Bearing Tolerance Chart Explained

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The precise world of bearings revolves around detailed measurements and exacting specifications.

One critical tool for ensuring optimal bearing performance is the bearing tolerance chart.

This vital reference provides insights into how bearings can fit and function within machinery, underscoring the importance of accurate measurements in bearing applications.

What is a Bearing Tolerance Chart?

A bearing tolerance chart is a detailed guideline, outlining the permissible limits of variation in a bearing's dimensions.

It serves to aid in the selection of the right bearings for specific applications, detailing key parameters such as inner and outer diameters, radial play, and axial play.

Why is it Important to Consult a Bearing Tolerance Chart?

Accurate interpretation of a bearing tolerance chart is key to achieving a proper bearing fit and function.

It helps avoid premature bearing failure, which can result from improper fit, thereby enhancing the performance and efficiency of the machinery.

How to Interpret a Bearing Tolerance Chart

Much like learning what bearing numbers mean, interpreting a bearing tolerance chart requires:

Tolerance Class: Each row usually represents a specific bearing type within a tolerance class, ranging from high to low precision, each suitable for various applications.
Dimensional Values: Tolerance charts present dimensions like ID, OD, and radial and axial play, indicating acceptable measurement ranges for bearings.
Radial Play and Axial Play: These values denote the bearing's permissible 'play' in radial and axial directions, crucial in applications with substantial load or movement along these axes.
Match to Application Requirements: The right bearing with the appropriate tolerance class can make all the difference. Table 1 below provides a comprehensive overview of the required performance, corresponding applications, and the suitable tolerance class for different scenarios.

Required performance	Applications	Tolerance class
High accuracy in runout is required for rolling elements.	Acoustic / visual equipment spindles (VTR, tape recorders)	P5, P4
	Radar / parabola antenna slewing shafts	P4
	Machine tool spindles	P5, P4, P2, ABEC9
	Computers, magnetic disc spindles	P5, P4, P2, ABEC9
	Aluminum foil roll necks	P5
	Multi-stage mill backing bearings	P4
High speed rotation	Dental spindles	P2, ABMA5P, ABMA7P
	Superchargers	P5, P4
	Jet engine spindles and accessories	P5, P4
	Centrifugal separators	P5, P4
	LNG pumps	P5
	Turbo molecular pump spindles and touch-down	P5, P4
	Machine tool spindles	P5, P4, P2, ABEC9
	Tension reels	P5, P4
Low friction or low friction variation is required.	Control equipment (synchronous motors, servomotors, gyro gimbals)	P4, ABMA7P
	Measuring instruments	P5
	Machine tool spindles	P5, P4, P2, ABEC9

Table 1 High precision bearing applications

Bearing Tolerance Chart

Bearing tolerances, as well as the allowable values for the boundary dimensions and operational accuracy of bearings, are specified.

The rules governing these tolerances are set out in JIS B 1514-1, -2, and -3, addressing roller bearings with a focus on part 1: radial bearings, part 2: thrust bearings, and part 3: permissible chamfer dimensions. These JIS regulations are based on the corresponding ISO standards.

Bearing tolerances are categorized into six classes: 0, 6X, 6, 5, 4, and 2, with precision increasing with the class number.

Class 0 bearings suffice for regular use, while Class 5 or higher bearings are needed for intense conditions, as shown in Table 1.

These tolerances, conforming to ISO standards, may have different names globally. Table 2 outlines specific tolerances per bearing class and pertinent bearing organizations.

Standards and organizations concerned with bearings include:

JIS : Japanese Industrial Standard
BAS : The Japan Bearing Industrial Association Standard
ISO : International Organization for Standardization
ANSI : American National Standards Institute, Inc.
ABMA : American Bearing Manufactures Association
DIN : Deutsches Institut für Normung
BS : British Standards Institution
NF : Association Francaise de Normalisation

Bearing type			Applied standards	Applied tolerance class						Tolerance table
Deep groove ball bearing			JIS B 1514-1	Class 0	-	Class 6	Class 5	Class 4	Class 2	Table 7-3
Angular contact ball bearing				Class 0	-	Class 6	Class 5	Class 4	Class 2
Self-aligning ball bearing				Class 0	-	-	-	-	-
Cylindrical roller bearing				Class 0	-	Class 6	Class 5	Class 4	Class 2
Needle roller bearing (machined ring type)			JIS B 1536-1	Class 0	-	-	-	-	-
Tapered roller bearing		Metric series (single-row)	JIS B 1514-1	Class 0	Class 6X	(Class 6)	Class 5	Class 4	Class 2	Table 7-5
		Metric series (double or four-row)	BAS 1002	Class 0	-	-	-	-	-	Table 7-6
		Inch series	ANSI/ABMA	Class4	-	Class 2	Class 3	Class 0	Class 00	Table 7-7
		Metric series (J-series)		Class PK	-	Class PN	Class PC	Class PB	-	Table 7-8
Spherical roller bearing			JIS B 1514-1	Class 0	-	-	-	-	-	Table 7-3
Thrust ball bearing			JIS B 1514-2	Class 0	-	Class 6	Class 5	Class 4	-	Table 7-9
Spherical thrust roller bearing			JIS B 1514-2	Class 0	-	-	-	-	-	Table 7-10
Precision ball screw support bearing			JTEKT standards	-	-	-	Class P5Z	Class P4Z	-	-
Double direction angular contact thrust ball bearing			JTEKT standards	-	-	-	Equivalent to class 5	Equivalent to class 4	-	-
(Reference) Class comparison	ISO	Radial bearing	ISO 492	Normal Class	Class 6X	Class 6	Class 5	Class 4	Class 2	-
	ISO	Thrust bearing	ISO 199	Normal Class	-	Class 6	Class 5	Class 4	-	-
	DIN	Radial and thrust bearings	DIN 620	Normal Class	Class 6X	Class 6	Class 5	Class 4	Class 2	-
	BS		BS 6107
	NF		NF E 22-335
	ANSI	Radial bearing	ABMA std. 20	ABEC 1	-	ABEC 3	ABEC 5	ABEC 7	ABEC 9	-
		Radial bearing	ABMA std. 20	RBEC 1	-	RBEC 3	RBEC 5	-	-	-
		Instrument ball bearing	ABMA std. 12	-	-	Class 3P	Class 5P	Class 7P	Class 9P	Table 7-4
	ABMA	Instrument ball bearing	ABMA std. 12	-	-	Class 3P	Class 5T	Class 7T	Class 9P	Table 7-4
		Tapered roller bearing	ABMA std. 19	Class 4	-	Class 2	Class 3	Class 0	Class 00	Table 7-7
		Tapered roller bearing	ABMA std. 19	Class K	-	Class N	Class C	Class B	Class A	Table 7-7

Table 2 Bearing type and tolerance class

To illustrate the precision of dimensions and operation for various bearing types, we'll use the example of radial bearing tolerances, excluding tapered roller bearings. See Table 3.

Table 3 JIS B 1514-1: Radial bearing tolerances (tapered roller bearings excluded)

(1) Inner ring (bore diameter)

Unit : μm
Nominal bore diameter d mm		Single plane mean bore diameter deviation Δ_dmp										Single bore diameter deviation Δ_ds^1）				Single plane				bore diameter variation V_dsp									Mean bore diameter variation V_dmp
		Single plane mean bore diameter deviation Δ_dmp										Single bore diameter deviation Δ_ds^1）				Diameter series 7,8,9				Diameter series 0, 1				Diameter series 2, 3, 4				Dia. series^1）	Mean bore diameter variation V_dmp
		class 0		class 6		class 5		class 4		class 2		class 4		class 2		class 0	class 6	class 5	class 4	class 0	class 6	class 5	class 4	class 0	class 6	class 5	class 4	class 2	class 0	class 6	class 5	class 4	class 2
over	up to	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	max.				max.				max.				max.	max.
-	0.6	0	－8	0	－7	0	－5	0	－4	0	－2.5	0	－4	0	－2.5	10	9	5	4	8	7	4	3	6	5	4	3	2.5	6	5	3	2	1.5
0.6	2.5	0	－8	0	－7	0	－5	0	－4	0	－2.5	0	－4	0	－2.5	10	9	5	4	8	7	4	3	6	5	4	3	2.5	6	5	3	2	1.5
2.5	10	0	－8	0	－7	0	－5	0	－4	0	－2.5	0	－4	0	－2.5	10	9	5	4	8	7	4	3	6	5	4	3	2.5	6	5	3	2	1.5
10	18	0	－8	0	－7	0	－5	0	－4	0	－2.5	0	－4	0	－2.5	10	9	5	4	8	7	4	3	6	5	4	3	2.5	6	5	3	2	1.5
18	30	0	－10	0	－8	0	－6	0	－5	0	－2.5	0	－5	0	－2.5	13	10	6	5	10	8	5	4	8	6	5	4	2.5	8	6	3	2.5	1.5
30	50	0	－12	0	－10	0	－8	0	－6	0	－2.5	0	－6	0	－2.5	15	13	8	6	12	10	6	5	9	8	6	5	2.5	9	8	4	3	1.5
50	80	0	－15	0	－12	0	9	0	－7	0	－4	0	－7	0	－4	19	15	9	7	19	15	7	5	11	9	7	5	4	11	9	5	3.5	2
80	120	0	－20	0	－15	0	－10	0	－8	0	－5	0	－8	0	－5	25	19	10	8	25	19	8	6	15	11	8	6	5	15	11	5	4	2.5
120	150	0	－25	0	－18	0	－13	0	－10	0	－7	0	－10	0	－7	31	23	13	10	31	23	10	8	19	14	10	8	7	19	14	7	5	3.5
150	180	0	－25	0	－18	0	－13	0	－10	0	－7	0	－10	0	－7	31	23	13	10	31	23	10	8	19	14	10	8	7	19	14	7	5	3.5
180	250	0	－30	0	－22	0	－15	0	－12	0	－8	0	－12	0	－8	38	28	15	12	38	28	12	9	23	17	12	9	8	23	17	8	6	4
250	315	0	－35	0	－25	0	－18	0	－15	-	-	0	－15	-	-	44	31	18	15	44	31	14	11	26	19	14	11	-	26	19	9	8	-
315	400	0	－40	0	－30	0	－23	0	－18	-	-	0	－18	-	-	50	38	23	18	50	38	18	14	30	23	18	14	-	30	23	12	9	-
400	500	0	－45	0	－35	0	－28	0	－23	-	-	0	－23	-	-	56	44	28	23	56	44	21	17	34	26	21	17	-	34	26	14	12	-
500	630	0	－50	0	－40	0	－35	-	-	-	-	-	-	-	-	63	50	35	-	63	50	26	-	38	30	26	-	-	38	30	18	-	-
630	800	0	－75	0	－50	0	－45	-	-	-	-	-	-	-	-	94	63	45	-	94	63	34	-	56	38	34	-	-	56	38	23	-	-
800	1000	0	－100	0	－60	0	－60	-	-	-	-	-	-	-	-	125	75	60	-	125	75	45	-	75	45	45	-	-	75	45	30	-	-
1000	1250	0	－125	0	－75	0	－75	-	-	-	-	-	-	-	-	156	94	75	-	156	94	56	-	94	56	56	-	-	94	56	38	-	-
1250	1600	0	－160	-	-	-	-	-	-	-	-	-	-	-	-	200	-	-	-	200	-	-	-	120	-	-	-	-	120	-	-	-	-
1600	2000	0	－200	-	-	-	-	-	-	-	-	-	-	-	-	250	-	-	-	250	-	-	-	150	-	-	-	-	150	-	-	-	-

(2) Inner ring (running accuracy and width)

Unit : μm
Nominal bore diameter d mm		Radial runout of assembled bearing inner ring K_ia					Perpendicularity of inner ring face with respect to the bore S_d			Axial runout of assembled bearing inner ring S_ia^2）			Single inner ring width deviation Δ_Bs										Single inner ring width deviation Δ_Bs^3）								Inner ring width variation V_Bs
Nominal bore diameter d mm		class 0	class 6	class 5	class 4	class 2	class 5	class 4	class 2	class 5	class 4	class 2	class 0		class 6		class 5		class 4		class 2		class 0⁴⁾		class 6⁴⁾		class 5⁴⁾		class 4, 2		class 0	class 6	class 5	class 4	class 2
over	up to	max.					max.			max.			upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	max.
-	0.6	10	5	4	2.5	1.5	7	3	1.5	7	3	1.5	0	－40	0	－40	0	－40	0	－40	0	－40	-	-	-	-	0	－250	0	－250	12	12	5	2.5	1.5
0.6	2.5	10	5	4	2.5	1.5	7	3	1.5	7	3	1.5	0	－40	0	－40	0	－40	0	－40	0	－40	-	-	-	-	0	－250	0	－250	12	12	5	2.5	1.5
2.5	10	10	6	4	2.5	1.5	7	3	1.5	7	3	1.5	0	－120	0	－120	0	－40	0	－40	0	－40	0	－250	0	－250	0	－250	0	－250	15	15	5	2.5	1.5
10	18	10	7	4	2.5	1.5	7	3	1.5	7	3	1.5	0	－120	0	－120	0	－80	0	－80	0	－80	0	－250	0	－250	0	－250	0	－250	20	20	5	2.5	1.5
18	30	13	8	4	3	2.5	8	4	1.5	8	4	2.5	0	－120	0	－120	0	－120	0	－120	0	－120	0	－250	0	－250	0	－250	0	－250	20	20	5	2.5	1.5
30	50	15	10	5	4	2.5	8	4	1.5	8	4	2.5	0	－120	0	－120	0	－120	0	－120	0	－120	0	－250	0	－250	0	－250	0	－250	20	20	5	3	1.5
50	80	20	10	5	4	2.5	8	5	1.5	8	5	2.5	0	－150	0	－150	0	－150	0	－150	0	－150	0	－380	0	－380	0	－250	0	－250	25	25	6	4	1.5
80	120	25	13	6	5	2.5	9	5	2.5	9	5	2.5	0	－200	0	－200	0	－200	0	－200	0	－200	0	－380	0	－380	0	－380	0	－380	25	25	7	4	2.5
120	150	30	18	8	6	2.5	10	6	2.5	10	7	2.5	0	－250	0	－250	0	－250	0	－250	0	－250	0	－500	0	－500	0	－380	0	－380	30	30	8	5	2.5
150	180	30	18	8	6	5	10	6	4	10	7	5	0	－250	0	－250	0	－250	0	－250	0	－250	0	－500	0	－500	0	－380	0	－380	30	30	8	5	4
180	250	40	20	10	8	5	11	7	5	13	8	5	0	－300	0	－300	0	－300	0	－300	0	－300	0	－500	0	－500	0	－500	0	－500	30	30	10	6	5
250	315	50	25	13	10	-	13	8	-	15	9	-	0	－350	0	－350	0	－350	0	－350	-	-	0	－500	0	－500	0	－500	-	-	35	35	13	8	-
315	400	60	30	15	13	-	15	9	-	20	12	-	0	－400	0	－400	0	－400	0	－400	-	-	0	－630	0	－630	0	－630	-	-	40	40	15	9	-
400	500	65	35	20	15	-	18	11	-	25	15	-	0	－450	0	－450	0	－450	0	－450	-	-	-	-	-	-	-	-	-	-	50	45	18	11	-
500	630	70	40	25	-	-	25	-	-	30	-	-	0	－500	0	－500	0	－500	-	-	-	-	-	-	-	-	-	-	-	-	60	50	20	-	-
630	800	80	50	30	-	-	30	-	-	35	-	-	0	－750	0	－750	0	－750	-	-	-	-	-	-	-	-	-	-	-	-	70	60	23	-	-
800	1000	90	60	40	-	-	40	-	-	45	-	-	0	－1000	0	－1000	0	－1000	-	-	-	-	-	-	-	-	-	-	-	-	80	60	35	-	-
1000	1250	100	70	50	-	-	50	-	-	60	-	-	0	－1250	0	－1250	0	－1250	-	-	-	-	-	-	-	-	-	-	-	-	100	60	45	-	-
1250	1600	120	-	-	-	-	-	-	-	-	-	-	0	－1600	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	120	-	-	-	-
1600	2000	140	-	-	-	-	-	-	-	-	-	-	0	－2000	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	140	-	-	-	-

(3) Outer ring (outside diameter)

Unit : μm
Nominal outside dia. D mm		Single plane mean outside diameter deviation Δ_Dmp										Single outside diameter deviation Δ_Ds^1）				Single plane				outside diameter variation V_Dsp											Mean outside diameter variation V_Dmp
																Diameter series 7, 8, 9				Diameter series 0, 1				Diameter series 2, 3, 4				Dia. series^1）	Shielded/sealed type
																													Diameter series
																													2,3,4	0,1,2,3,4
		class 0		class 6		class 5		class 4		class 2		class 4⁵⁾		class 2		class 0²⁾	class 6²⁾	class 5⁵⁾	class 4⁵⁾	class 0²⁾	class 6²⁾	class 5⁵⁾	class 4⁵⁾	class 0²⁾	class 6²⁾	class 5⁵⁾	class 4⁵⁾	class 2	class 0²⁾	class 6²⁾	class 0²⁾	class 6²⁾	class 5	class 4	class 2
over	up to	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	max.				max.				max.				max.	max.		max.
-	2.5	0	－8	0	－7	0	－5	0	－4	0	－2.5	0	－4	0	－2.5	10	9	5	4	8	7	4	3	6	5	4	3	2.5	10	9	6	5	3	2	1.5
2.5	6	-	－8	0	－7	0	－5	0	－4	0	－2.5	0	－4	0	－2.5	10	9	5	4	8	7	4	3	6	5	4	3	2.5	10	9	6	5	3	2	1.5
6	18	0	－8	0	－7	0	－5	0	－4	0	－2.5	0	－4	0	－2.5	10	9	5	4	8	7	4	3	6	5	4	3	2.5	10	9	6	5	3	2	1.5
18	30	0	－9	0	－8	0	－6	0	－5	0	－4	0	－5	0	－4	12	10	6	5	9	8	5	4	7	6	5	4	4	12	10	7	6	3	2.5	2
30	50	0	－11	0	－9	0	－7	0	－6	0	－4	0	－6	0	－4	14	11	7	6	11	9	5	5	8	7	5	5	4	16	13	8	7	4	3	2
50	80	0	－13	0	－11	0	－9	0	－7	0	－4	0	－7	0	－4	16	14	9	7	13	11	7	5	10	8	7	5	4	20	16	10	8	5	3.5	2
80	120	0	－15	0	－13	0	－10	0	－8	0	－5	0	－8	0	－5	19	16	10	8	19	16	8	6	11	10	8	6	5	26	20	11	10	5	4	2.5
120	150	0	－18	0	－15	0	－11	0	－9	0	－5	0	－9	0	－5	23	19	11	9	23	19	8	7	14	11	8	7	5	30	25	14	11	6	5	2.5
150	180	0	－25	0	－18	0	－13	0	－10	0	－7	0	－10	0	－7	31	23	13	10	31	23	10	8	19	14	10	8	7	38	30	19	14	7	5	3.5
180	250	0	－30	0	－20	0	－15	0	－11	0	－8	0	－11	0	－8	38	25	15	11	38	25	11	8	23	15	11	8	8	-	-	23	15	8	6	4
250	315	0	－35	0	－25	0	－18	0	－13	0	－8	0	－13	0	－8	44	31	18	13	44	31	14	10	26	19	14	10	8	-	-	26	19	9	7	4
315	400	0	－40	0	－28	0	－20	0	－15	0	－10	0	－15	0	－10	50	35	20	15	50	35	15	11	30	21	15	11	10	-	-	30	21	10	8	5
400	500	0	－45	0	－33	0	－23	0	－17	-	-	0	－17	-	-	56	41	23	17	56	41	17	13	34	25	17	13	-	-	-	34	25	12	9	-
500	630	0	－50	0	－38	0	－28	0	－20	-	-	0	－20	-	-	63	48	28	20	63	48	21	15	38	29	21	15	-	-	-	38	29	14	10	-
630	800	0	－75	0	－45	0	－35	-	-	-	-	-	-	-	-	94	56	35	-	94	56	26	-	55	34	26	-	-	-	-	55	34	18	-	-
800	1000	0	－100	0	－60	0	－50	-	-	-	-	-	-	-	-	125	75	50	-	125	75	38	-	75	45	38	-	-	-	-	75	45	25	-	-
1000	1250	0	－125	0	－75	0	－63	-	-	-	-	-	-	-	-	156	94	63	-	156	94	47	-	94	56	47	-	-	-	-	94	56	31	-	-
1250	1600	0	－160	0	－90	0	－80	-	-	-	-	-	-	-	-	200	113	80	-	200	113	60	-	120	68	60	-	-	-	-	120	68	40	-	-
1600	2000	0	－200	0	－120	-	-	-	-	-	-	-	-	-	-	250	150	-	-	250	150	-	-	150	90	-	-	-	-	-	150	90	-	-	-
2000	2500	0	－250	-	-	-	-	-	-	-	-	-	-	-	-	313	-	-	-	313	-	-	-	188	-	-	-	-	-	-	188	-	-	-	-

(4) Outer ring (running accuracy and width)

Unit：µm
Nominal outside dia. D mm		Radial runout of assembled bearing outer ring K_ea					Perpendicularity of outer ring outside surface with respect to the face S_D^4）			Axial runout of assembled bearing outer ring S_ea^3）4）			Ring width variation Δ_Cs^3）		Ring width variation V_Cs^3）
Nominal outside dia. D mm		class 0	class 6	class 5	class 4	class 2	class 5	class 4	class 2	class 5	class 4	class 2	classes 0,6,5,4,2		classes 0,6	class 5	class 4	class 2
over	up to	max.					max.			max.			upper	lower	max.
-	2.5	15	8	5	3	1.5	8	4	1.5	8	5	1.5	Shall conform to the tolerance Δ_Bs on d of the same bearing		Shall conform to the tolerance V_Bs on d of the same bearing	5	2.5	1.5
2.5	6	15	8	5	3	1.5	8	4	1.5	8	5	1.5				5	2.5	1.5
6	18	15	8	5	3	1.5	8	4	1.5	8	5	1.5				5	2.5	1.5
18	30	15	9	6	4	2.5	8	4	1.5	8	5	2.5				5	2.5	1.5
30	50	20	10	7	5	2.5	8	4	1.5	8	5	2.5				5	2.5	1.5
50	80	25	13	8	5	4	8	4	1.5	10	5	4				6	3	1.5
80	120	35	18	10	6	5	9	5	2.5	11	6	5				8	4	2.5
120	150	40	20	11	7	5	10	5	2.5	13	7	5				8	5	2.5
150	180	45	23	13	8	5	10	5	2.5	14	8	5				8	5	2.5
180	250	50	25	15	10	7	11	7	4	15	10	7				10	7	4
250	315	60	30	18	11	7	13	8	5	18	10	7				11	7	5
315	400	70	35	20	13	8	13	10	7	20	13	8				13	8	7
400	500	80	40	23	15	-	15	12	-	23	15	-				15	9	-
500	630	100	50	25	18	-	18	13	-	25	18	-				18	11	-
630	800	120	60	30	-	-	20	-	-	30	-	-				20	-	-
800	1000	140	75	40	-	-	23	-	-	40	-	-				23	-	-
1000	1250	160	85	45	-	-	30	-	-	45	-	-				30	-	-
1250	1600	190	95	60	-	-	45	-	-	60	-	-				45	-	-
1600	2000	220	110	-	-	-	-	-	-	-	-	-				-	-	-
2000	2500	250	-	-	-	-	-	-	-	-	-	-				-	-	-

Accuracies for dimensions and running of other bearing types are listed in:

Table 4 ANSI/ABMA: Tolerances for measuring instrument ball bearings (inch series)

(1) Inner ring and outer ring width

Unit : μm
Nominal bore dia. d mm		Single plane mean bore diameter deviation Δ_dmp				Single bore diameter deviation Δ_ds				Single plane bore diameter variation V_dsp		Mean bore diameter variation V_dmp		Radial runout K_ia			Axial runout S_ia			Perpendicularity S_d			Width deviation Δ_Bs, Δ_Cs		Width variation V_Bs, V_Cs
Nominal bore dia. d mm		Classes 5P, 7P		Class 9P		Classes 5P, 7P		Class 9P		Classes 5P, 7P	Class 9P	Classes 5P, 7P	Class 9P	Class 5P	Class 7P	Class 9P	Class 5P	Class 7P	Class 9P	Class 5P	Class 7P	Class 9P	Classes 5P, 7P, 9P		Class 5P	Class 7P	Class 9P
over	up to	upper	lower	upper	lower	upper	lower	upper	lower	max.		max.		max.			max.			max.			upper	lower	max.
-	10	0	－5.1	0	－2.5	0	－5.1	0	－2.5	2.5	1.3	2.5	1.3	3.8	2.5	1.3	7.6	2.5	1.3	7.6	2.5	1.3	0	－25.4	5.1	2.5	1.3
10	18	0	－5.1	0	－2.5	0	－5.1	0	－2.5	2.5	1.3	2.5	1.3	3.8	2.5	1.3	7.6	2.5	1.3	7.6	2.5	1.3	0	－25.4	5.1	2.5	1.3
18	30	0	－5.1	0	－2.5	0	－5.1	0	－2.5	2.5	1.3	2.5	1.3	3.8	3.8	2.5	7.6	3.8	1.3	7.6	3.8	1.3	0	－25.4	5.1	2.5	1.3

(2) Outer ring

Unit : μm
Nominal outside dia. D mm		Single plane mean outside diameter deviation Δ_Dmp				Single outside diameter deviation Δ_Ds						Single plane outside diameter variation V_Dsp			Mean outside diameter variation V_Dmp			Radial runout K_ea			Axial runout S_ea			Perpendicularity S_D			Flange outside dia. deviation Δ_D1s		Flange width deviation Δ_C1s
		Class 5P, 7P		Class 9P		Classes 5P, 7P				Class 9P		Classes 5P, 7P		Class 9P	Classes 5P, 7P		Class 9P	Class 5P	Class 7P	Class 9P	Class 5P	Class 7P	Class 9P	Class 5P	Class 7P	Class 9P	Classes 5P, 7P		Classes 5P, 7P
		Class 5P, 7P		Class 9P		Open type		Shielded/sealed type		Open type		Open type	Shielded/sealed type	Open type	Open type	Shielded/sealed type	Open type	Class 5P	Class 7P	Class 9P	Class 5P	Class 7P	Class 9P	Class 5P	Class 7P	Class 9P	Classes 5P, 7P		Classes 5P, 7P
over	up to	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower	max.			max.			max.			max.			max.			upper	lower	upper	lower
-	18	0	－5.1	0	－2.5	0	－5.1	＋1	－6.1	0	－2.5	2.5	5.1	1.3	2.5	5.1	1.3	5.1	3.8	1.3	7.6	5.1	1.3	7.6	3.8	1.3	0	－25.4	0	－50.8
18	30	0	－5.1	0	－3.8	0	－5.1	＋1	－6.1	0	－3.8	2.5	5.1	2	2.5	5.1	2	5.1	3.8	2.5	7.6	5.1	2.5	7.6	3.8	1.3	0	－25.4	0	－50.8
30	50	0	－5.1	0	－3.8	0	－5.1	＋1	－6.1	0	－3.8	2.5	5.1	2	2.5	5.1	2	5.1	5.1	2.5	7.6	5.1	2.5	7.6	3.8	1.3	0	－25.4	0	－50.8

Table 5 JIS B 1514-1: Tolerances for metric series tapered roller bearings

(1) Inner ring

Unit : μm
Nominal bore diameter d mm		Single plane mean bore diameter deviation Δ_dmp								Single bore diameter deviation Δ_ds				Single plane bore dia. variation V_dsp					Mean bore dia. variation V_dmp					Radial runout K_ia					Perpendicularity S_d			Axial runout S_ia		Single inner ring width deviation Δ_Bs
Nominal bore diameter d mm		cl. 0, 6X		cl. 6, 5		cl. 4		cl. 2		cl. 4		cl. 2		cl. 0, 6X	cl. 6	cl. 5	cl. 4	cl. 2	cl. 0, 6X	cl. 6	cl. 5	cl. 4	cl. 2	cl. 0,6X	cl. 6	cl. 5	cl. 4	cl. 2	cl. 5	cl. 4	cl. 2	cl. 4	cl. 2	cl. 0		cl. 6X		cl. 6		cl. 5, 4		cl. 2
over	up to	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	max.					max.					max.					max.			max.		up	lo	up	lo	up	lo	up	lo	up	lo
-	10	0	－12	0	－7	0	－5	0	－4	0	－5	0	－4	12	-	5	4	2.5	9	-	5	4	1.5	15	-	5	3	2	7	3	1.5	3	2	0	－120	0	－50	-	-	0	－200	0	－200
10	18	0	－12	0	－7	0	－5	0	－4	0	－5	0	－4	12	7	5	4	2.5	9	5	5	4	1.5	15	7	5	3	2	7	3	1.5	3	2	0	－120	0	－50	0	－120	0	－200	0	－200
18	30	0	－12	0	－8	0	－6	0	－4	0	－6	0	－4	12	8	6	5	2.5	9	6	5	4	1.5	18	8	5	3	2.5	8	4	1.5	4	2.5	0	－120	0	－50	0	－120	0	－200	0	－200
30	50	0	－12	0	－10	0	－8	0	－5	0	－8	0	－5	12	10	8	6	3	9	8	5	5	2	20	10	6	4	2.5	8	4	2	4	2.5	0	－120	0	－50	0	－120	0	－240	0	－240
50	80	0	－15	0	－12	0	－9	0	－5	0	－9	0	－5	15	12	9	7	4	11	9	6	5	2	25	10	7	4	3	8	5	2	4	3	0	－150	0	－50	0	－150	0	－300	0	－300
80	120	0	－20	0	－15	0	－10	0	－6	0	－10	0	－6	20	15	11	8	5	15	11	8	5	2.5	30	13	8	5	3	9	5	2.5	5	3	0	－200	0	－50	0	－200	0	－400	0	－400
120	180	0	－25	0	－18	0	－13	0	－7	0	－13	0	－7	25	18	14	10	7	19	14	9	7	3.5	35	18	11	6	4	10	6	3.5	7	4	0	－250	0	－50	0	－250	0	－500	0	－500
180	250	0	－30	0	－22	0	－15	0	－8	0	－15	0	－8	30	22	17	11	7	23	16	11	8	4	50	20	13	8	5	11	7	5	8	5	0	－300	0	－50	0	－300	0	－600	0	－600
250	315	0	－35	0	－25	0	－18	0	－8	0	－18	0	－8	35	25	19	12	8	26	19	13	9	5	60	30	13	9	6	13	8	5.5	9	6	0	－350	0	－50	0	－350	0	－700	0	－700
315	400	0	－40	0	－30	-	-	-	-	-	-	-	-	40	30	23	-	-	30	23	15	-	-	70	35	15	-	-	15	-	-	-	-	0	－400	0	－50	0	－400	0	－800	-	-
400	500	0	－45	0	－35	-	-	-	-	-	-	-	-	45	35	28	-	-	34	26	17	-	-	80	40	20	-	-	17	-	-	-	-	0	－450	0	－50	0	－450	0	－900	-	-
500	630	0	－60	0	－40	-	-	-	-	-	-	-	-	60	40	35	-	-	40	30	20	-	-	90	50	25	-	-	20	-	-	-	-	0	－500	-	-	0	－500	0	－1100	-	-
630	800	0	－75	0	－50	-	-	-	-	-	-	-	-	75	50	45	-	-	45	38	25	-	-	100	60	30	-	-	25	-	-	-	-	0	－750	-	-	0	－750	0	－1600	-	-
800	1000	0	－100	0	－60	-	-	-	-	-	-	-	-	100	60	60	-	-	55	45	30	-	-	115	75	37	-	-	30	-	-	-	-	0	－1000	-	-	0	－1000	0	－2000	-	-

(2-1) Outer ring

Unit : μm
Nominal outside diameter D mm		Single plane mean outside diameter deviation Δ_Dmp								Single outside diameter deviation Δ_Ds				Single plane outside dia. variation V_Dsp					Mean outside dia. variation V_Dmp					Radial runout K_ea					Perpendicularity S_D³⁾			Axial runout S_ea³⁾
Nominal outside diameter D mm		cl. 0, 6X		cl. 6, 5		cl. 4		cl. 2		cl. 4		cl. 2		cl. 0, 6X	cl. 6	cl. 5	cl. 4	cl. 2	cl. 0, 6X	cl. 6	cl. 5	cl. 4	cl. 2	cl. 0,6X	cl. 6	cl. 5	cl. 4	cl. 2	cl. 5	cl. 4	cl. 2	cl. 4	cl. 2
over	up to	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	max.					max.					max.					max.			max.
-	18	0	－12	0	－8	0	－6	0	－5	0	－6	0	－5	12	-	6	5	4	9	-	5	4	2.5	18	-	6	4	2.5	8	4	1.5	5	2.5
18	30	0	－12	0	－8	0	－6	0	－5	0	－6	0	－5	12	8	6	5	4	9	6	5	4	2.5	18	9	6	4	2.5	8	4	1.5	5	2.5
30	50	0	－14	0	－9	0	－7	0	－5	0	－7	0	－5	14	9	7	5	4	11	7	5	5	2.5	20	10	7	5	2.5	8	4	2	5	2.5
50	80	0	－16	0	－11	0	－9	0	－6	0	－9	0	－6	16	11	8	7	4	12	8	6	5	2.5	25	13	8	5	4	8	4	2.5	5	4
80	120	0	－18	0	－13	0	－10	0	－6	0	－10	0	－6	18	13	10	8	5	14	10	7	5	3	35	18	10	6	5	9	5	3	6	5
120	150	0	－20	0	－15	0	－11	0	－7	0	－11	0	－7	20	15	11	8	5	15	11	8	6	3.5	40	20	11	7	5	10	5	3.5	7	5
150	180	0	－25	0	－18	0	－13	0	－7	0	－13	0	－7	25	18	14	10	7	19	14	9	7	4	45	23	13	8	5	10	5	4	8	5
180	250	0	－30	0	－20	0	－15	0	－8	0	－15	0	－8	30	20	15	11	8	23	15	10	8	5	50	25	15	10	7	11	7	5	10	7
250	315	0	－35	0	－25	0	－18	0	－9	0	－18	0	－9	35	25	19	14	8	26	19	13	9	5	60	30	18	11	7	13	8	6	10	7
315	400	0	－40	0	－28	0	－20	0	－10	0	－20	0	－10	40	28	22	15	10	30	21	14	10	6	70	35	20	13	8	13	10	7	13	8
400	500	0	－45	0	－33	-	-	-	-	-	-	-	-	45	33	26	-	-	34	25	17	-	-	80	40	24	-	-	17	-	-	-	-
500	630	0	－50	0	－38	-	-	-	-	-	-	-	-	60	38	30	-	-	38	29	20	-	-	100	50	30	-	-	20	-	-	-	-
630	800	0	－75	0	－45	-	-	-	-	-	-	-	-	80	45	38	-	-	55	34	25	-	-	120	60	36	-	-	25	-	-	-	-
800	1000	0	－100	0	－60	-	-	-	-	-	-	-	-	100	60	50	-	-	75	45	30	-	-	140	75	43	-	-	30	-	-	-	-
1000	1250	0	－125	0	－80	-	-	-	-	-	-	-	-	130	75	65	-	-	90	56	38	-	-	160	85	52	-	-	38	-	-	-	-
1250	1600	0	－160	0	－100	-	-	-	-	-	-	-	-	170	90	90	-	-	100	68	50	-	-	180	95	62	-	-	50	-	-	-	-

(2-2) Outer ring

Unit : μm
Nominal bore diameter d mm		Single outer ring width deviation Δ_Cs
Nominal bore diameter d mm		class 6X		classes 0,6,5,4,2
over	up to	upper	lower	upper	lower
-	10	0	－100	Shall conform to the tolerance Δ_Bs on d of the same bearing
10	18	0	－100
18	30	0	－100
30	50	0	－100
50	80	0	－100
80	120	0	－100
120	180	0	－100
180	250	0	－100
250	315	0	－100
315	400	0	－100
400	500	0	－100
500	630	-	-
630	800	-	-
800	1000	-	-

(3) Assembled bearing width and effective width

Unit : μm
Nominal bore diameter d mm		Actual bearing width deviation Δ_Ts										Actual effective inner sub-unit width deviation Δ_T1s								Actual effective outer ring width deviation Δ_T2s
Nominal bore diameter d mm		class 0		class 6X		class 6		classes 5, 4		class 2		class 0		class 6X		classes 5, 4		class 2		class 0		class 6X		classes 5, 4		class 2
over	up to	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo
-	10	＋200	0	＋100	0	-	-	＋200	－200	＋200	－200	＋100	0	＋50	0	＋100	－100	＋100	－100	＋100	0	＋50	0	＋100	－100	＋100	－100
10	18	＋200	0	＋100	0	＋200	0	＋200	－200	＋200	－200	＋100	0	＋50	0	＋100	－100	＋100	－100	＋100	0	＋50	0	＋100	－100	＋100	－100
18	30	＋200	0	＋100	0	＋200	0	＋200	－200	＋200	－200	＋100	0	＋50	0	＋100	－100	＋100	－100	＋100	0	＋50	0	＋100	－100	＋100	－100
30	50	＋200	0	＋100	0	＋200	0	＋200	－200	＋200	－200	＋100	0	＋50	0	＋100	－100	＋100	－100	＋100	0	＋50	0	＋100	－100	＋100	－100
50	80	＋200	0	＋100	0	＋200	0	＋200	－200	＋200	－200	＋100	0	＋50	0	＋100	－100	＋100	－100	＋100	0	＋50	0	＋100	－100	＋100	－100
80	120	＋200	－200	＋100	0	＋200	－200	＋200	－200	＋200	－200	＋100	－100	＋50	0	＋100	－100	＋100	－100	＋100	－100	＋50	0	＋100	－100	＋100	－100
120	180	＋350	－250	＋150	0	＋350	－250	＋350	－250	＋200	－250	＋150	－150	＋50	0	＋150	－150	＋100	－100	＋200	－100	＋100	0	＋200	－100	＋100	－150
180	250	＋350	－250	＋150	0	＋350	－250	＋350	－250	＋200	－300	＋150	－150	＋50	0	＋150	－150	＋100	－150	＋200	－100	＋100	0	＋200	－100	＋100	－150
250	315	＋350	－250	＋200	0	＋350	－250	＋350	－250	＋200	－300	＋150	－150	＋100	0	＋150	－150	＋100	－150	＋200	－100	＋100	0	＋200	－100	＋100	－150
315	400	＋400	－400	＋200	0	＋400	－400	＋400	－400	-	-	＋200	－200	＋100	0	＋200	－200	-	-	＋200	－200	＋100	0	＋200	－200	-	-
400	500	＋450	－450	＋200	0	＋400	－400	＋450	－450	-	-	＋225	－225	＋100	0	＋225	－225	-	-	＋225	－225	＋100	0	＋225	－225	-	-
500	630	＋500	－500	-	-	＋500	－500	＋500	－500	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
630	800	＋600	－600	-	-	＋600	－600	＋600	－600	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
800	1000	＋750	－750	-	-	＋750	－750	＋750	－750	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Table 6 BAS 1002: Tolerances for metric series double-row and four-row tapered roller bearings (class 0)

(1) Inner ring, outer ring width and overall width

Unit : μm
Nominal bore diameter d mm		Single plane mean bore diameter deviation Δ_dmp		Single plane bore dia. variation V_dsp	Mean bore dia. variation V_dmp	Radial runout K_ia	Single outer/inner ring width deviation Δ_Bs, Δ_Cs		Actual overall width deviation
Nominal bore diameter d mm		Single plane mean bore diameter deviation Δ_dmp		Single plane bore dia. variation V_dsp	Mean bore dia. variation V_dmp	Radial runout K_ia	Single outer/inner ring width deviation Δ_Bs, Δ_Cs		Double-row T_s		Four-row Δ_Ts, Δ_Ws
over	up to	upper	lower	max.	max.	max.	upper	lower	upper	lower	upper	lower
30	50	0	－12	12	9	20	0	－120	＋240	－240	-	-
50	80	0	－15	15	11	25	0	－150	＋300	－300	-	-
80	120	0	－20	20	15	30	0	－200	＋400	－400	＋500	－500
120	180	0	－25	25	19	35	0	－250	＋500	－500	＋600	－600
180	250	0	－30	30	23	50	0	－300	＋600	－600	＋750	－750
250	315	0	－35	35	26	60	0	－350	＋700	－700	＋900	－900
315	400	0	－40	40	30	70	0	－400	＋800	－800	＋1000	－1000
400	500	0	－45	45	34	80	0	－450	＋900	－900	＋1200	－1200
500	630	0	－60	60	40	90	0	－500	＋1000	－1000	＋1200	－1200
630	800	0	－75	75	45	100	0	－750	＋1500	－1500	-	-
800	1000	0	－100	100	55	115	0	－1000	＋1500	－1500	-	-

(2) Outer ring

Unit : μm
Nominal outside diameter D mm		Single plane mean outside diameter deviation Δ_Dmp		Single plane outside dia. variation V_Dsp	Mean outside dia. variation V_Dmp	Radial runout K_ea
over	up to	upper	lower	max.	max.	max.
50	80	0	－16	16	12	25
80	120	0	－18	18	14	35
120	150	0	－20	20	15	40
150	180	0	－25	25	19	45
180	250	0	－30	30	23	50
250	315	0	－35	35	26	60
315	400	0	－40	40	30	70
400	500	0	－45	45	34	80
500	630	0	－50	60	38	100
630	800	0	－75	80	55	120
800	1000	0	－100	100	75	140
1000	1250	0	－125	130	90	160
1250	1600	0	－160	170	100	180

Table 7 ANSI/ABMA 19: Tolerances and permissible values for inch series tapered roller bearings

(1) Inner ring

Unit : μm
Applied bearing type	Nominal bore diameter d, mm (1/25.4)		Deviation of a single bore diameter Δ_ds
	Nominal bore diameter d, mm (1/25.4)		Class 4		Class 2		Class 3		Class 0		Class 00
	over	up to	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower
All types	-	76.2 (3.0)	＋13	0	＋13	0	＋13	0	＋13	0	＋8	0
	76.2 (3.0)	266.7 (10.5)	＋25	0	＋25	0	＋13	0	＋13	0	＋8	0
	266.7 (10.5)	304.8 (12.0)	＋25	0	＋25	0	＋13	0	＋13	0	＋8	0
	304.8 (12.0)	609.6 (24.0)	＋51	0	＋51	0	＋25	0	-	-	-	-
	609.6 (24.0)	914.4 (36.0)	＋76	0	-	-	＋38	0	-	-	-	-
	914.4 (36.0)	1219.2 (48.0)	＋102	0	-	-	＋51	0	-	-	-	-
	1219.2 (48.0)	-	＋127	0	-	-	＋76	0	-	-	-	-

(2) Outer ring

Unit : μm
Applied bearing type	Nominal outside diameter D, mm (1/25.4)		Deviation of a single outside diameter Δ_Ds
	Nominal outside diameter D, mm (1/25.4)		Class 4		Class 2		Class 3		Class 0		Class 00
	over	up to	upper	lower	upper	lower	upper	lower	upper	lower	upper	lower
All types	-	266.7 (10.5)	＋25	0	＋25	0	＋13	0	＋13	0	＋8	0
	266.7 (10.5)	304.8 (12.0)	＋25	0	＋25	0	＋13	0	＋13	0	＋8	0
	304.8 (12.0)	609.6 (24.0)	＋51	0	＋51	0	＋25	0	-	-	-	-
	609.6 (24.0)	914.4 (36.0)	＋76	0	＋76	0	＋38	0	-	-	-	-
	914.4 (36.0)	1219.2 (48.0)	＋102	0	-	-	＋51	0	-	-	-	-
	1219.2 (48.0)	-	＋127	0	-	-	＋76	0	-	-	-	-

(3) Radial runout of assembled bearing inner ring/outer ring

Unit : μm
Applied bearing type	Nominal outside diameter D, mm (1/25.4)		Radial runout K_ia, K_ea
	Nominal outside diameter D, mm (1/25.4)		Class 4	Class 2	Class 3	Class 0	Class 00
	over	up to	max.	max.	max.	max.	max.
All types	-	266.7 (10.5)	51	38	8	4	2
	266.7 (10.5)	304.8 (12.0)	51	38	8	4	2
	304.8 (12.0)	609.6 (24.0)	51	38	18	-	-
	609.6 (24.0)	914.4 (36.0)	76	51	51	-	-
	914.4 (36.0)	1219.2 (48.0)	76	-	76	-	-
	1219.2 (48.0)	-	76	-	76	-	-

(4) Assembled bearing width and overall width

Unit : μm
Applied bearing type	Nominal bore dia. d, mm (1/25.4)		Nominal outside dia. D, mm (1/25.4)		Deviation of actual bearing width / overall width Δ_Ts, Δ_Ws
	Nominal bore dia. d, mm (1/25.4)		Nominal outside dia. D, mm (1/25.4)		Class 4		Class 2		Class 3		Classes 0, 00
	over	up to	over	up to	upper	lower	upper	lower	upper	lower	upper	lower
Single-row	-	101.6 (4.0)	-	-	＋203	0	＋203	0	＋203	－203	＋203	－203
	101.6 (4.0)	266.7 (10.5)			＋356	－254	＋203	0	＋203	－203	＋203	－203
	266.7 (10.5)	304.8 (12.0)	-	-	＋356	－254	＋203	0	＋203	－203	＋203	－203
	304.8 (12.0)	609.6 (24.0)	-	508.0 (20.0)	-	-	＋381	－381	＋203	－203	-	-
	304.8 (12.0)	609.6 (24.0)	508.0 (20.0)	-	-	-	＋381	－381	＋381	－381	-	-
	609.6 (24.0)		-	-	＋381	－381	-	-	＋381	－381	-	-
Double-row	-	101.6 (4.0)	-	-	＋406	0	＋406	0	＋406	－406	＋406	－406
	101.6 (4.0)	266.7 (10.5)	-	-	＋711	－508	＋406	－203	＋406	－406	＋406	－406
	266.7 (10.5)	304.8 (12.0)	-	-	＋711	－508	＋406	－203	＋406	－406	＋406	－406
	304.8 (12.0)	609.6 (24.0)	-	508.0 (20.0)	-	-	＋762	－762	＋406	－406	-	-
	304.8 (12.0)	609.6 (24.0)	508.0 (20.0)	-	-	-	＋762	－762	＋762	－762	-	-
	609.6 (24.0)		-	-	＋762	－762	-	-	＋762	－762	-	-
Double-row (TNA type)	-	127.0 (5.0)	-	-	-	-	＋254	0	＋254	0	-	-
Double-row (TNA type)	127.0 (5.0)		-	-	-	-	＋762	0	＋762	0	-	-
Four-row	Total dimensional range		-	-	＋1524	－1524	＋1524	－1524	＋1524	－1524	＋1524	－1524

Table 8 Tolerances for metric J series tapered roller bearings

(1) Bore diameter and width of inner ring and assembled bearing width

Unit : μm
Nominal bore diameter d mm		Deviation of a single bore diameter Δ_ds								Deviation of a single inner ring width Δ_Bs								Deviation of the actual bearing width Δ_Ts
Nominal bore diameter d mm		Class PK		Class PN		Class PC		Class PB		Class PK		Class PN		Class PC		Class PB		Class PK		Class PN		Class PC		Class PB
over	up to	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo
10	18	0	－12	0	－12	0	－7	0	－5	0	－100	0	－50	0	－200	0	－200	＋200	0	＋100	0	＋200	－200	＋200	－200
18	30	0	－12	0	－12	0	－8	0	－6	0	－100	0	－50	0	－200	0	－200	＋200	0	＋100	0	＋200	－200	＋200	－200
30	50	0	－12	0	－12	0	－10	0	－8	0	－100	0	－50	0	－200	0	－200	＋200	0	＋100	0	＋200	－200	＋200	－200
50	80	0	－15	0	－15	0	－12	0	－9	0	－150	0	－50	0	－300	0	－300	＋200	0	＋100	0	＋200	－200	＋200	－200
80	120	0	－20	0	－20	0	－15	0	－10	0	－150	0	－50	0	－300	0	－300	＋200	－200	＋100	0	＋200	－200	＋200	－200
120	180	0	－25	0	－25	0	－18	0	－13	0	－200	0	－50	0	－300	0	－300	＋350	－250	＋150	0	＋350	－250	＋200	－250
180	250	0	－30	0	－30	0	－22	0	－15	0	－200	0	－50	0	－350	0	－350	＋350	－250	＋150	0	＋350	－250	＋200	－300
250	315	0	－35	0	－35	0	－22	0	－15	0	－200	0	－50	0	－350	0	－350	＋350	－250	＋200	0	＋350	－300	＋200	－300

(2) Outside diameter and width of outer ring and radial runout of assembled bearing inner ring/ outer ring

Unit : μm
Nominal outside diameter D mm		Deviation of a single outside diameter Δ_Ds								Deviation of a single outer ring width Δ_Cs								Radial runout K_ia, K_ea
Nominal outside diameter D mm		Class PK		Class PN		Class PC		Class PB		Class PK		Class PN		Class PC		Class PB		Class PK	Class PN	Class PC	Class PB
over	up to	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	up	lo	max.	max.	max.	max.
18	30	0	－12	0	－12	0	－8	0	－6	0	－150	0	－100	0	－150	0	－150	18	18	5	3
30	50	0	－14	0	－14	0	－9	0	－7	0	－150	0	－100	0	－150	0	－150	20	20	6	3
50	80	0	－16	0	－16	0	－11	0	－9	0	－150	0	－100	0	－150	0	－150	25	25	6	4
80	120	0	－18	0	－18	0	－13	0	－10	0	－200	0	－100	0	－200	0	－200	35	35	6	4
120	150	0	－20	0	－20	0	－15	0	－11	0	－200	0	－100	0	－200	0	－200	40	40	7	4
150	180	0	－25	0	－25	0	－18	0	－13	0	－200	0	－100	0	－250	0	－250	45	45	8	4
180	250	0	－30	0	－30	0	－20	0	－15	0	－250	0	－100	0	－250	0	－250	50	50	10	5
250	315	0	－35	0	－35	0	－25	0	－18	0	－250	0	－100	0	－300	0	－300	60	60	11	5
315	400	0	－40	0	－40	0	－28	-	-	0	－250	0	－100	0	－300	-	-	70	70	13	-

Table 9 JIS B 1514-2: Tolerances for thrust ball bearings

(1) Shaft race and central race

Unit : μm
Nominal bore diameter d or d₂, mm		Single plane mean bore diameter deviation Δ_dmp or Δ_d2mp				Single plane bore dia. variation V_dsp or V_d2sp		Race raceway to back face thickness variation S_i^1）2）
Nominal bore diameter d or d₂, mm		classes 0, 6, 5		class 4		classes 0, 6, 5	class 4	class 0	class 6	class 5	class 4
over	up to	upper	lower	upper	lower	max.		max.
-	18	0	－8	0	－7	6	5	10	5	3	2
18	30	0	－10	0	－8	8	6	10	5	3	2
30	50	0	－12	0	－10	9	8	10	6	3	2
50	80	0	－15	0	－12	11	9	10	7	4	3
80	120	0	－20	0	－15	15	11	15	8	4	3
120	180	0	－25	0	－18	19	14	15	9	5	4
180	250	0	－30	0	－22	23	17	20	10	5	4
250	315	0	－35	0	－25	26	19	25	13	7	5
315	400	0	－40	0	－30	30	23	30	15	7	5
400	500	0	－45	0	－35	34	26	30	18	9	6
500	630	0	－50	0	－40	38	30	35	21	11	7
630	800	0	－75	0	－50	55	40	40	25	13	8
800	1000	0	－100	-	-	75	-	45	30	15	-
1000	1250	0	－125	-	-	95	-	50	35	18	-

(2) Housing race

Unit : μm
Nominal outside diameter D mm		Single plane mean outside diameter deviation Δ_Dmp				Single plane outside dia. variation V_Dsp		Race thickness variation S_e^1）2）
		classes 0, 6, 5		class 4		classes 0, 6, 5	class 4	classes 0, 6, 5, 4
over	up to	upper	lower	upper	lower	max.		max.
10	18	0	－11	0	－7	8	5	Shall conform to the tolerance S_i on d or d₂ of the same bearing
18	30	0	－13	0	－8	10	6
30	50	0	－16	0	－9	12	7
50	80	0	－19	0	－11	14	8
80	120	0	－22	0	－13	17	10
120	180	0	－25	0	－15	19	11
180	250	0	－30	0	－20	23	15
250	315	0	－35	0	－25	26	19
315	400	0	－40	0	－28	30	21
400	500	0	－45	0	－33	34	25
500	630	0	－50	0	－38	38	29
630	800	0	－75	0	－45	55	34
800	1000	0	－100	0	－60	75	45
1000	1250	0	－125	-	-	95	-
1250	1600	0	－160	-	-	120	-

(3) Bearing height and central race height

Unit : μm
Nominal bore diameter d mm		Single direction Δ_Ts		Double direction Δ_T1s^1）		Double direction Δ_T2s^1）		Single central race height deviation Δ_Bs^1）
over	up to	upper	lower	upper	lower	upper	lower	upper	lower
-	30	0	－75	＋50	－150	0	－75	0	－50
30	50	0	－100	＋75	－200	0	－100	0	－75
50	80	0	－125	＋100	－250	0	－125	0	－100
80	120	0	－150	＋125	－300	0	－150	0	－125
120	180	0	－175	＋150	－350	0	－175	0	－150
180	250	0	－200	＋175	－400	0	－200	0	－175
250	315	0	－225	＋200	－450	0	－225	0	－200
315	400	0	－300	＋250	－600	0	－300	0	－250

Table 10 JIS B 1514-2: Tolerances for spherical thrust roller bearings (class 0)

(1) Shaft race

Unit : μm
Nominal bore diameter d mm		Single plane mean bore diameter deviation Δ_Dmp		Single plane bore dia. variation V_dsp	Perpendicularity S_d	Actual bearing height deviation Δ_Ts
over	up to	upper	lower	max.	max.	upper	lower
50	80	0	－15	11	25	＋150	－150
80	120	0	－20	15	25	＋200	－200
120	180	0	－25	19	30	＋250	－250
180	250	0	－30	23	30	＋300	－300
250	315	0	－35	26	35	＋350	－350
315	400	0	－40	30	40	＋400	－400
400	500	0	－45	34	45	＋450	－450

(2) Housing race

Unit : μm
Nominal outside diameter D, mm		Single plane mean outside diameter deviation Δ_Dmp
over	up to	upper	lower
120	180	0	－25
180	250	0	－30
250	315	0	－35
315	400	0	－40
400	500	0	－45
500	630	0	－50
630	800	0	－75
800	1000	0	－100

Table 11 JIS B 1514-1: Tolerances and permissible values for tapered bores of radial bearings (class 0)

(1) Basically tapered bore (taper 1:12)

Unit : μm
Nominal bore diameter d, mm		Δ_dmp		Δ_d1mp－Δ_dmp		V_dsp^1）
over	up to	upper	lower	upper	lower	max.
-	10	＋22	0	＋15	0	9
10	18	＋27	0	＋18	0	11
18	30	＋33	0	＋21	0	13
30	50	＋39	0	＋25	0	16
50	80	＋46	0	＋30	0	19
80	120	＋54	0	＋35	0	22
120	180	＋63	0	＋40	0	40
180	250	＋72	0	＋46	0	46
250	315	＋81	0	＋52	0	52
315	400	＋89	0	＋57	0	57
400	500	＋97	0	＋63	0	63
500	630	＋110	0	＋70	0	70
630	800	＋125	0	＋80	0	-
800	1000	＋140	0	＋90	0	-
1000	1250	＋165	0	＋105	0	-
1250	1600	＋195	0	＋125	0	-

(2) Basically tapered bore (taper 1:30)

Unit : μm
Nominal bore diameter d, mm		Δ_dmp		Δ_d1mp－Δ_dmp		V_dsp^1）
over	up to	upper	lower	upper	lower	max.
-	50	＋15	0	＋30	0	19
50	80	＋15	0	＋30	0	19
80	120	＋20	0	＋35	0	22
120	180	＋25	0	＋40	0	40
180	250	＋30	0	＋46	0	46
250	315	＋35	0	＋52	0	52
315	400	＋40	0	＋57	0	57
400	500	＋45	0	＋63	0	63
500	630	＋50	0	＋70	0	70

Table 12 Tolerances and permissible values for flanged radial ball bearings

(1) Tolerances on flange outside diameters

Unit : μm
Nominal outer ring flange outside diameter D₁ (mm)		Deviation of single outer ring flange outside diameter Δ_D1s
Nominal outer ring flange outside diameter D₁ (mm)		Locating flange		Non-locating flange
over	up to	upper	lower	upper	lower
-	6	0	－36	＋220	－36
6	10	0	－36	＋220	－36
10	18	0	－43	＋270	－43
18	30	0	－52	＋330	－52
30	50	0	－62	＋390	－62
50	80	0	－74	＋460	－74

(2) Tolerances and permissible values on flange widths and permissible values of running accuracies relating to flanges

Unit : μm
Nominal outside diameter D (mm)		Deviation of single outer ring flange width Δ_C1s¹⁾		Variation of outer ring flange width V_C1s¹⁾				Perpendicularity of outer ring outside surface with respect to the flange back face S_D1						Axial runout of assembled bearing outer ring flange back face S_ea1
		Deviation of single outer ring flange width Δ_C1s¹⁾		Variation of outer ring flange width V_C1s¹⁾				Deep groove & angular contact ball bearings			Tapered roller bearings			Deep groove & angular contact ball bearings			Tapered roller bearings
		classes 0, 6, 5, 4, 2		cl. 0, 6	cl. 5	cl. 4	cl. 2	cl. 5	cl. 4	cl. 2	cl. 5	cl. 4	cl. 2	cl. 5	cl. 4	cl. 2	cl. 4	cl. 2
over	up to	upper	lower	max.				max.			max.			max.			max.
-	2.5	Shall conform to the tolerance Δ_Bs on d of the same class and bearing		Shall conform to the tolerance V_Bs on d of the same class and bearing	5	2.5	1.5	8	4	1.5	8	4	1.5	11	7	3	7	4
2.5	6				5	2.5	1.5	8	4	1.5	8	4	1.5	11	7	3	7	4
6	18				5	2.5	1.5	8	4	1.5	8	4	1.5	11	7	3	7	4
18	30				5	2.5	1.5	8	4	1.5	8	4	1.5	11	7	4	7	4
30	50				5	2.5	1.5	8	4	1.5	8	4	2	11	7	4	7	4
50	80				6	3	1.5	8	4	1.5	8	4	2.5	14	7	6	7	6

Conclusion

Understanding and effectively using a bearing tolerance chart is integral to successful bearing applications and optimal machinery performance.

It’s not just about the right fit, but also about enhancing efficiency and extending bearing service life.

At Lily-Bearing, we are committed to providing high-quality bearings with precise tolerances to meet your diverse application needs.

Through accurate bearing selection using our comprehensive bearing tolerance chart, you can achieve significant improvements in machinery performance.