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Single Row Angular Contact Ball Bearings Designation system
The designations of most LILY rolling bearings follow a system that may consist of a basic designation with or without one or more prefixes and/or suffixes.
Examples and the applicable options for single row angular contact ball bearings are given below.
Examples
7210 BEP | where | 7210 = | |
B, E = | |||
P = | |||
7210 BECBY | where | 7210 = | |
B, E = | |||
CB = | |||
Y = |
Applicable options
Prefixes (n.a.) | |
Basic designation | |
Listed in table 1 | |
Figure with four digits: drawing number identification | |
ALS | Inch bearing |
AMS | Inch bearing |
Bearing size for inch bearings (divided by 8 = bore diameter) |
|
22 to 40 |
/8 = 2 3/4 in. (69,85 mm) bore diameter /8 = 5 in. (127 mm) bore diameter |
Suffixes - Internal design | |
A | 30° contact angle |
AB | 20° contact angle (inch bearing) |
AC | 25° contact angle |
B | 40° contact angle |
E | Optimized internal design |
Suffixes - External design (seals, snap ring groove, execution, etc.) | |
N1 | One locating slot (notch) in one outer ring side face |
CA | Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have axial internal clearance smaller than Normal (CB). |
CB | Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have Normal axial internal clearance. |
CC | Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have axial internal clearance greater than Normal (CB). |
G | Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have axial internal clearance. |
GA | Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have light preload. |
GB | Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have moderate preload. |
GC | Bearing for universal matching. Two bearings arranged back-to-back or face-to-face have heavy preload. |
-2RZ | Non-contact seal, NBR, on both sides |
Suffixes - Cage design | |
F | Machined steel cage, ball centred |
J | Stamped steel cage, ball centred |
M | Machined brass cage, ball centred; different designs are identified by a number following the M, e.g. M2 |
MB | Machined brass cage, inner ring centred |
P | Glass fibre reinforced PA66 cage, ball centred |
PH | Glass fibre reinforced PEEK cage, ball centred |
Y | Stamped brass cage, ball centred |
Suffixes - Materials, heat treatment (n.a.) | |
Suffixes - Accuracy, clearance, preload, quiet running | |
P5 | Dimensional and geometrical tolerances (tolerances of run-out and orientation) to class P5 |
P6 | Dimensional and geometrical tolerances (tolerances of run-out) to class P6 |
Suffixes - Bearing sets, matched bearings | |
DB | Two bearings matched for mounting back-to-back |
DF | Two bearings matched for mounting face-to-face |
DT | Two bearings matched for mounting in tandem |
Suffixes - Stabilization (n.a.) | |
Suffixes - Lubrication (n.a.) | |
Suffixes - Other variants (n.a.) |