(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) - 283

Static Load Rating (Cor) - 112

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 - Martensitic Stainless Steel

Also available in 52100 Chrome Steel

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

• Model Number:SR4
• Inner Diameter：6,35mm Outer Diameter：15,875mm Width：4,9784mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-11
• Application:raw material accessories,Medical equipment,Gear grinding machine,Medium and large motor,Embroidery,respirator,Control,Other Measurements,Hydraulic Press,casting embedding,reducer
• Similar models:PFI RAE40NPPB KOYO 687 NTN FLRA156Z Fersa 6314 SKF W61906-2RS1 KOYO 6801-2RD NTN AS208D1 INA 203-KRR-AH02 NTN 6301LLH KOYO 6202-2RD
• BEARING POWER International Trading Co.,Ltd. specialize in SR4 products，there is large inventory of AST SR4 . We has been built up long-term cooperation with AST company, could make a bulk order of the SR4 Which AST SR4 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.

• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  21075/21212	19,05	53,975	22,225	ISO	Tapered Roller Bearings
  21309 KCW33	45	100	25	CX	Spherical Roller Bearings
  21314K	70	150	35	NTN	Spherical Roller Bearings
  6214-N	70	125	24	NKE	Deep Groove Ball Bearings
  6389/6320	66,675	135,755	53,975	FBJ	Tapered Roller Bearings
  681A/672	92,075	168,275	41,275	CX	Tapered Roller Bearings
  6848	240	300	28	CYSD	Deep Groove Ball Bearings
  87762/87111	193,675	282,575	50,8	Timken	Tapered Roller Bearings
  AX 4 17 30	17	30	4	Timken	Needle Roller Bearings
  B-116	17.463	22.212	9.53	KOYO	Needle Roller Bearings
  GE 110 ES-2RS	160	110	70	SKF	Plain Bearings
  HK4516	45	52	16	KOYO	Needle Roller Bearings
  NU 213 ECP	120	65	23	SKF	Thrust Ball Bearings
  SL183056	280	420	106	ISO	Cylindrical Roller Bearings
  16010	50	80	10	FAG	DEEP GROOVE BALL BEARINGS
  MCYR-17S	17	40	21	McGill	NEEDLE BEARINGS
  280SD41	280	460	180	Torrington (Old No.)	SPHERICAL ROLLER BEARINGS
  FPAG508	5.5000	7.5000	1.0000	SKF	ANGULAR CONTACT BALL BEARINGS
  H-2318x80	90	120		CONSOLIDATED	ADAPTERS
  A-5150WB	250	410	111.1	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS