d - 1 mm

D - 3 mm

B - 1.5 mm

d₁ - - 1.55 mm

D₁ - - 2.46 mm

r_1,2 - min. - 0.05 mm

d_a - min. - 1.4 mm

d_a - max. - 1.5 mm

D_a - max. - 2.6 mm

r_a - max. - 0.05 mm

Basic dynamic load rating - C - 0.052 kN

Basic static load rating - C₀ - 0.012 kN

Fatigue load limit - P_u - 0.001 kN

Reference speed - 240000 r/min

Limiting speed - 150000 r/min

Calculation factor - k_r - 0.02

Calculation factor - f₀ - 5.6

Mass bearing - 0.0001 kg

• Model Number: W 638/1
• Inner Diameter：3mm Outer Diameter：1mm Width：1,5mm
• Type：Deep Groove Ball Bearings
• Update date：2025-04-19
• Application:stamping die and its equipment,glass,Plastic Equipment,car steering pin,wire industry,marine analysis,Handling machinery and various industrial machinery,Medical room equipment,noise inspection,CNC,Surveying Surveying Instruments
• Similar models:SKF W638/5R-2RS1 ISB 63803 ISO 63801 SKF W63804-2RS1 SKF W638/4XR-2Z ISO 63802 ISB SS63800-ZZ SKF W638/1.5-2Z ISB F63801ZZ SKF W63803
• BEARING POWER International Trading Co.,Ltd. specialize in W638/1 products，there is large inventory of SKF W 638/1 . We has been built up long-term cooperation with SKF company, could make a bulk order of the W 638/1 Which SKF W638/1 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
  23084 CAK/W33	620	420	150	SKF	Spherical Roller Bearings
  24128MBK30	140	225	85	AST	Spherical Roller Bearings
  51124	120	155	25	FBJ	Thrust Ball Bearings
  51422	110	225		CX	Thrust Ball Bearings
  53308U	40	78	28,5	KOYO	Thrust Ball Bearings
  7209 C	45	85	19	NSK	Angular Contact Ball Bearings
  7318DF	90	190	43	NTN	Angular Contact Ball Bearings
  7404 A	20	72	19	ISO	Angular Contact Ball Bearings
  E 220 /S/NS 7CE3	20	47	14	SNFA	Angular Contact Ball Bearings
  JLM508748/JLM508710	60	95	24	Timken	Tapered Roller Bearings
  LM742747/710	216,408	285,75	46,038	ISB	Tapered Roller Bearings
  NNU4960KC1NAP4	300	420	118	NTN	Cylindrical Roller Bearings
  NU2322-E-M6	110	240	80	NKE	Cylindrical Roller Bearings
  R22-RS	34,925	63,5	14,288	CYSD	Deep Groove Ball Bearings
  VKBD1007				SKF	Wheel Bearings
  X33207/Y33207	35	72	28	Timken	Tapered Roller Bearings
  1915SFFP	75	105	16	MRC	DEEP GROOVE BALL BEARINGS
  93128	.5000	.8750	1.7500	BERLISS	JOURNAL ROLLER ASSEMBLIES
  RHNA304018C	40		18	SKF (Old No.)	NEEDLE BEARINGS
  MCYRR-5	5	16	12	McGill	NEEDLE BEARINGS