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R Series

R Series Deep Groove Ball Bearing is a widely used bearing type. It has the characteristics of simple structure, easy installation and low maintenance cost. It can withstand radial load and certain bidirectional axial load. In addition, R series deep groove ball bearings also have the characteristics of low friction, low noise and low vibration, and are suitable for high-speed operation conditions. This kind of bearing provides a variety of structural types, such as with dust cover, sealing ring, etc., to meet the needs of different working environments.

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R SERIES · DEEP GROOVE · EXTRA SMALL

R Series Deep Groove Ball Bearing

inch / metric bore open / shielded / sealed P0 / P5 precision

Compact footprint

Designed for applications with limited space, the R series provides reliable radial and axial load support within a minimal envelope.

Inch and metric variants

Available with standard inch bore sizes (R4, R6, R8 etc.) as well as metric equivalents for interchangeability with existing designs.

Sealing configurations

Open, metal shielded (ZZ), or rubber sealed (2RS) variants available to meet specific contamination and lubrication requirements.

Smooth operation

Precision-ground raceways and high-quality balls ensure low vibration levels and reduced acoustic noise in sensitive equipment.

Specification summary

Bore diameter3.175mm - 12.700mm (0.125in - 0.500in)

Outer diameter7.938mm - 28.575mm (0.3125in - 1.125in)

Width2.779mm - 7.938mm

Dynamic load rating0.5kN - 4.6kN

Static load rating0.2kN - 2.3kN

Limiting speed (grease)18000 - 42000 rpm

Common applications

Instruments

Measuring devices, flow meters, and precision optical equipment.

Electric motors

Small fan motors, stepper motors, and miniature drives.

Automotive

Power window drives, door lock actuators, and sensor assemblies.

Medical

Dental equipment, surgical tools, and diagnostic instruments.

Robotics

Joint actuators, sensor pivots, and gripper mechanisms.

Office equipment

Printers, scanners, and paper feed systems.

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Storage and handling

Store in original packaging in a clean, dry environment. Avoid exposure to corrosive chemicals. Handle with clean gloves to prevent contamination of raceways.

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Mounting guidance

Apply force evenly to the ring being mounted. Use a press with appropriate support sleeves. Never apply impact force directly to the bearing.

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Lubrication

Sealed variants are pre-lubricated for life. Open variants require grease or oil compatible with the operating speed and temperature range.

Bearing Designation	Dimension								Weight
	d	d	D	D	B	B	rs min	rs min	Kg
	in	mm	in	mm	in	mm	in	mm	Kg
R10	45420	15.875	36958	34.925	0.2181	5.54	0.031	0.8	37
R12	45355	19.05	37019	41.275	0.3126	7.94	0.031	0.8	47
R14	45481	22.225	37080	47.625	0.3752	9.53	0.031	0.8	71
R16	1	25.4	2	50.8	0.3752	9.53	0.031	0.8	85
R18	36899	28.575	37264	53.975	0.3752	9.53	0.031	0.8	90
R20	36895	31.75	37260	57.15	0.3752	9.53	0.031	0.8	95
R22	36958	34.925	37258	63.5	0.4374	11.11	0.031	0.8	106
R24	36893	38.1	37384	66.675	0.4374	11.11	0.031	0.8	141
R6	45359	9.525	45481	22.225	0.2189	5.56	0.016	0.4	11
R8	45293	12.7	36899	28.575	0.25	6.35	0.016	0.4	18

R Series

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