d - 4 mm

D - 16 mm

B - 5 mm

C - 5 mm

r min. - 0,3 mm

r1 min. - 0,3 mm

da min. - 6 mm

Da max. - 14 mm

ra max. - 0,3 mm

Weight - 0,0053 Kg

Basic dynamic load rating (C) - 1,75 kN

Basic static load rating (C0) - 0,67 kN

(Grease) Lubrication Speed - 40000 r/min

(Oil) Lubrication Speed - 49000 r/min

Calculation factor (f0) - 12,4

• Model Number:634
• Inner Diameter：4mm Outer Diameter：16mm Width：5mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-16
• Application:DC generators,Machine Tool Accessories,hardware,Vacuum generator,marine analysis,Hydraulic Hose,Solenoid Valves,wall industry,Grinding and polishing equipment,ventilation fans,horizontal processing
• Similar models:SKF 634-2RZ NTN 634Z SKF 634-2RS1 ISB 634-2RS SKF 634-Z KOYO 6340 ISO 634-2RS NKE 6340-M ZEN SF634-2Z ZEN R1634-2Z
• BEARING POWER International Trading Co.,Ltd. specialize in 634 products，there is large inventory of KOYO 634 . We has been built up long-term cooperation with KOYO company, could make a bulk order of the 634 Which KOYO 634 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
  23952-K-MB-W33	260	360	75	NKE	Spherical Roller Bearings
  484/472A	70	120	29,002	Timken	Tapered Roller Bearings
  4T-16150/16283	38,1	72,238	23,812	NTN	Tapered Roller Bearings
  5313NRZZG15	65,000	140,000	58,700	SNR	Angular Contact Ball Bearings
  5331				Ruville	Wheel Bearings
  6206-2Z	30	62	16	ZEN	Deep Groove Ball Bearings
  638-2RD	8	28	9	KOYO	Deep Groove Ball Bearings
  7219 B-UO	95	170	64	CX	Angular Contact Ball Bearings
  839/832	82,55	168,275	53,975	Timken	Tapered Roller Bearings
  F61800-2Z	10	19	5	ZEN	Deep Groove Ball Bearings
  GE900-DW	900	1180	375	INA	Plain Bearings
  K65X73X30H	65	74		KOYO	Needle Roller Bearings
  NN3016	80	125	34	KOYO	Cylindrical Roller Bearings
  NP328	140	300	62	ISO	Cylindrical Roller Bearings
  H3964	320	380		FAG	ADAPTERS
  NAST30.DB	30	62	20	FAG (Old No.)	NEEDLE BEARINGS
  40TAC90B	40	90	20	NSK	ANGULAR CONTACT BALL SCREW SUPPORT BEARINGS
  6318-RSNR	90	190	43	CONSOLIDATED	DEEP GROOVE BALL BEARINGS
  GSQ-208-102A	1.1250	3.1496	1.4375	CONSOLIDATED	AGRICULTURAL BALL BEARINGS
  SN-206..6206	30	-	52	CONSOLIDATED	PILLOW BLOCKS