Product Categories / Mounted Bearings / Pillow Block Bearing / BPP1

BPP1

Name: BPP1 Pillow Block Bearing
Brand: LILY

$4.43 /Each

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Overview
Part Number	BPP1
Brand: LILY	Interchangeable With: AMI
Bearing Part Number	B1
Housing Part Number	PP3
Characteristics
System of Measurement	Metric
Bearing Type	Ball Bearing
Bearing Seal Type	Double Sealed
Inner Ring Type	Narrow Inner Ring
Mounted Type	Pillow Block Bearing
Shaft Mount Type	Set Screw Locking
Product Series	BPP200
Dimensions
Bore Dia	12 mm
Bore Dia Tolerance	-0.0005" to 0"
Bearing Width	22 mm
Hole Width	8.7 mm
Hole Length	12.7 mm
Overall Height	44.5 mm
Pillow Height	3.2 mm
Center Height	22.2 mm
Whole Length	92.1 mm
Hole Ctr-to-Ctr Min	64 mm
Hole Ctr-to-Ctr Max	73 mm
Width of Inner Ring	25.4 mm
Mounting Bolt Size	M8
Material
Bearings Material	AISI 52100 Steel
Housing Material	Pressed Steel
Performance
Stamping Load Limit	1.33 kN
Temperature Range	-30° to 110 °C
Properties
RoHS	Compliant
REACH	Compliant
Lubrication	Required
Weight	0.18 kg

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What does BPP1 mean?

BPP1 is an AMI metric pressed steel pillow block unit with a narrow inner ring insert and set screw locking, for a 12 mm shaft. The part number breaks down into 3 segments:

B: Narrow inner ring ball bearing insert, set screw locking, spherical outer ring. Insert part number is B1

PP: Housing style: pressed steel pillow block. Housing part number is PP3

1: Frame size 201, 200 series (normal duty); metric bore 12 mm

Frequently asked questions

What does BPP1 mean?

BPP1 is an AMI metric pressed steel pillow block unit with a narrow inner ring insert and set screw locking, for a 12 mm shaft. B = narrow inner ring ball bearing insert, set screw locking, spherical outer ring. Insert part number is B1, PP = housing style: pressed steel pillow block. Housing part number is PP3, 1 = frame size 201, 200 series (normal duty); metric bore 12 mm.

What is the bore size of BPP1?

The bore of BPP1 is 12 mm.

Shaft retention is achieved through set screw locking in this pillow block bearing unit, which secures the shaft reliably against moderate loads and low-to-medium vibration — provided the shaft is of standard ground finish and the screws are correctly torqued — without damaging the shaft surface.

Two M8 bolts fasten the mounted bearing unit to the mounting surface, providing a secure and stable foundation that suits both new installations and direct replacement applications. A light-to-medium duty metric size, commonly paired with small-to-mid-range pillow blocks in general machinery, offering reliable clamping with standard tooling.

Why does this bearing use Set Screw Locking to secure the shaft?

Set screw locking works by tightening one or two hardened screws directly against the shaft surface, which makes it well suited to applications where shaft positioning is fixed and loads are moderate. Its main advantage over other shaft locking methods is simplicity and low cost, which matters most when quick installation and minimal tooling are the priority.

How does the M8 affect installation and compatibility?

The bolt size directly determines whether the pillow block bearing can be mounted onto an existing frame or structure without modification. An M8 bolt corresponds to a light-to-medium duty hole pattern common in small metric pillow blocks used across general machinery and light conveyor systems, so when replacing an existing unit, confirming this dimension ensures a drop-in fit. Mismatched bolt sizes may require redrilling the mounting surface or sourcing an adapter plate, adding time and cost to the installation.