(dimensions in inches)

Bearing Type - Open

Bore Dia (d) - 0.2500

Outer Dia (D) - 0.7500

Width (B) - 0.2188

Radius (min) (rs) - 0.016

Dynamic Load Rating (Cr) - 525

Static Load Rating (Cor) - 190

Max Speed (Grease) (X1000 RPM) - 36

Max Speed (Oil) (X1000 RPM) - 43

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

Min. Housing Shoulder Dia., Outer (Lo) - 0.6

Ball Qty - 6

Ball Dia (Dw) - 0.1378

Weight (g) - 7.48

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: R4A
• Inner Diameter：6,35mm Outer Diameter：19,05mm Width：5,55752mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-11
• Application:office equipment,Spectrum Products,reinforced machinery,comprehensive experiment,journal lathe,dye pigments,vacuum filter,engine,organic raw materials,gantry processing,industry test
• Similar models:KOYO 606-2RD NACHI 6306N NACHI 63/28 CX 623 KOYO 6003-2RS FBJ 6811ZZ KOYO SB201-8 SKF 6003-2Z/VA208 NTN 6212ZNR KOYO 6317-2RU
• BEARING POWER International Trading Co.,Ltd. specialize in R4A products，there is large inventory of AST R4A . We has been built up long-term cooperation with AST company, could make a bulk order of the R4A Which AST R4A 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
  207-KRR-AH03	35	72	25	INA	Deep Groove Ball Bearings
  22214 KCW33+H314	70	125	31	ISO	Spherical Roller Bearings
  30219A	95	170	34,5	SNR	Tapered Roller Bearings
  B3228	50,8	60,325	44,45	KOYO	Needle Roller Bearings
  3NCN1030	150	225	35	KOYO	Cylindrical Roller Bearings
  692-2ZW2,3	2	6	2,3	ZEN	Deep Groove Ball Bearings
  7932	160	220	28	KOYO	Angular Contact Ball Bearings
  AST650 152130	16	21		AST	Plain Bearings
  EX207G2	35	72	51,1	SNR	Deep Groove Ball Bearings
  GEG110ET-2RS	110	180	100	LS	Plain Bearings
  HC6206	30	62	16	KBC	Deep Groove Ball Bearings
  KESTD3368LTF	33,338	68,263	22,225	KOYO	Tapered Roller Bearings
  LMFM13UU	13	23		Samick	Linear Bearings
  N308ECP	40	90	23	SKF	Cylindrical Roller Bearings
  N326 E	130	280	58	CX	Cylindrical Roller Bearings
  NA6913	65	90	45	CX	Needle Roller Bearings
  NCF28/800-V	800	936	106	NKE	Cylindrical Roller Bearings
  NTA-4458	69,85	92,075	3,175	KOYO	Needle Roller Bearings
  6004NR	20	42	12	STEYR	DEEP GROOVE BALL BEARINGS
  K-35x42x18	35	42	18	CONSOLIDATED	NEEDLE BEARINGS