d - 8 mm

D - 28 mm

B - 9 mm

d₂ - - 13.9 mm

D₂ - - 22.38 mm

r_1,2 - min. - 0.3 mm

D_a - max. - 26 mm

r_a - max. - 0.3 mm

Basic dynamic load rating - C - 4 kN

Basic static load rating - C₀ - 2 kN

Fatigue load limit - P_u - 0.083 kN

Reference speed - 67000 r/min

Limiting speed - 32000 r/min

Calculation factor - k_r - 0.035

Calculation factor - f₀ - 12.4

Mass bearing - 0.0282 kg

• Model Number: W 638-2RZ
• Inner Diameter：28mm Outer Diameter：8mm Width：9mm
• Type：Deep Groove Ball Bearings
• Update date：2025-04-24
• Application:chuck industry,Liposuction device,medical Equipment,Laser Devices,baler,stirrer,hydraulic pressure gauge,Generator,pump accessories,glass processing machine,hardware
• Similar models:NSK 638 SKF W63804-2RZ ISB 638/5-ZZ ZEN 63802-2RS ISB 63800 SKF W63800R-2Z ZEN 638-2RS SKF W638/2X-2Z ISB 63803-ZZ SKF W638/4R-2RS1
• BEARING POWER International Trading Co.,Ltd. specialize in W638-2RZ products，there is large inventory of SKF W 638-2RZ . We has been built up long-term cooperation with SKF company, could make a bulk order of the W 638-2RZ Which SKF W638-2RZ 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
  115177X/115227X	177,8	227,013	30,16	Gamet	Tapered Roller Bearings
  21315	75	160	37	NTN	Spherical Roller Bearings
  248/1000-B-MB	1000	1220	218	FAG	Spherical Roller Bearings
  32040-X-N11CA	200	310	140	FAG	Tapered Roller Bearings
  5315KG	75	160	68,3	Timken	Angular Contact Ball Bearings
  63/23P53	23	56	15	CHINA	Deep Groove Ball Bearings
  81122	110	145	25	SIGMA	Thrust Roller Bearings
  AST40 10580	105	110		AST	Plain Bearings
  F-234977.06	40,783	93	38	FAG	Angular Contact Ball Bearings
  F16026	35	72	33	Fersa	Angular Contact Ball Bearings
  PSL 612-331	682,625	1080	660	PSL	Tapered Roller Bearings
  RNAO16X24X20	16	20	20	Timken	Needle Roller Bearings
  SB 150A	150	220	120	IKO	Plain Bearings
  AD5252	260	480	6.2500	American	CYLINDRICAL ROLLER BEARINGS
  AN21			.7600	SKF	LOCKNUTS
  311WDG	55	120	29	FAF	DEEP GROOVE BALL BEARINGS
  7215PJDU	75	130	25	MRC	ANGULAR CONTACT BALL BEARINGS
  NU2316E	80	170	58	SKF	CYLINDRICAL ROLLER BEARINGS
  PB-14	1.7500	4.2500	1.0625	RIV	DEEP GROOVE BALL BEARINGS
  CRHSB-80	2.5000	5.0000	2.7500	CONSOLIDATED	NEEDLE BEARINGS