(dimensions in inches)

Bearing Type - Open

Bore Dia (d) - 0.2500

Outer Dia (D) - 0.6250

Width (B) - 0.1960

Radius (min) (rs) - 0.002

Dynamic Load Rating (Cr) - 333

Static Load Rating (Cor) - 131

Max Speed (Grease) (X1000 RPM) - 38

Max Speed (Oil) (X1000 RPM) - 45

Max. Shaft Shoulder Dia. Inner (Li) - 0.4

Min. Housing Shoulder Dia., Outer (Lo) - 0.5

Ball Qty - 8

Ball Dia (Dw) - 0.0937

Weight (g) - 4.46

Precision - A1

Standard Clearance - K25

Material - 52100 Chrome steel (or equivalent)

Also available in Stainless Steel, add prefix "S"

ABEC Grades 1, 3, 5, 7, and 9 are available.

• Model Number: R4
• Inner Diameter：6,35mm Outer Diameter：15,875mm Width：4,9784mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-16
• Application:metallurgical mold,sheet industry,Machine Tool Accessories,Medium and large motor,medical equipment,mechanical annex,education model Instruments,Laser Devices,Spectral Products,safety testing,motor
• Similar models:ISO FL608ZZ KOYO 6015N NKE 6005 NMB L-1370 KOYO 6013Z KOYO M6313 KOYO UC208-24L3 ISB SS61807-ZZ FAG UC207-21 Fersa F18019
• BEARING POWER International Trading Co.,Ltd. specialize in R4 products，there is large inventory of AST R4 . We has been built up long-term cooperation with AST company, could make a bulk order of the R4 Which AST R4 is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express.Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

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  240/630CAE4	630	920	290	NSK	Spherical Roller Bearings
  B27-12NX	27	82	19	NSK	Deep Groove Ball Bearings
  7009 B	45	75	16	CX	Angular Contact Ball Bearings
  7228 ATBP4	140	250	42	CX	Angular Contact Ball Bearings
  AST40 20060	200	205		AST	Plain Bearings
  BT1-0085/QCL7C	31,75	73,025	30	SKF	Tapered Roller Bearings
  ESPF211	55			SNR	Bearing Units
  LBCF 12 A	12	22	32	SKF	Linear Bearings
  NKXR15Z	15,000	24,000	23,000	NTN	Complex Bearings
  NMJ 1.3/8	34,925	88,9	22,23	SIGMA	Self-Aligning Ball Bearings
  NNU4936K	180	250	69	NTN	Cylindrical Roller Bearings
  NU3322	110	240	92.1	KOYO	Cylindrical Roller Bearings
  RNA499	12	20	11	NSK	Needle Roller Bearings
  TAPR 706 DO	40			ISB	Plain Bearings
  NK12/12	19		12	FAG	NEEDLE BEARINGS
  NURT35-1R	35	80	29	IKO	NEEDLE BEARINGS
  FPAG608	6.5000	8.5000	1.0000	SKF	ANGULAR CONTACT BALL BEARINGS
  K-10x14x13	10	14	13	CONSOLIDATED	NEEDLE BEARINGS
  53x68x10mm	53	68	10	CONSOLIDATED	OIL SEALS
  62810-ZZ	50	65	10	CONSOLIDATED	DEEP GROOVE BALL BEARINGS