d - 4 mm

D - 8 mm

B - 3 mm

d₁ - - 5 mm

D₂ - - 7.4 mm

D₃ - 9.2 mm

C - 0.6 mm

r_1,2 - min. - 0.1 mm

d_a - min. - 4.8 mm

r_a - max. - 0.1 mm

Basic dynamic load rating - C - 0.225 kN

Basic static load rating - C₀ - 0.072 kN

Fatigue load limit - P_u - 0.003 kN

Reference speed - 150000 r/min

Limiting speed - 75000 r/min

Calculation factor - k_r - 0.02

Calculation factor - f₀ - 7.2

Mass bearing - 0.0006 kg

• Model Number: W 637/4 XR-2Z
• Inner Diameter：8mm Outer Diameter：4mm Width：3mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-10
• Application:food sterilization,Leather Products,climb ladder,municipal machinery,extruder,Infrared Technology,plastic molding,flow control valve,animal anatomy,Processing machinery,Cylinder Micro
• Similar models:AST 637H KOYO F637ZZ ISB SS637/3 SKF W637/5XR-2ZS KOYO F637 INA F-238637.02 ISO 637-2RS SKF W637-2RZ SKF W637/8R-2ZS SKF W637/4XR
• BEARING POWER International Trading Co.,Ltd. specialize in W637/4XR-2Z products，there is large inventory of SKF W 637/4 XR-2Z . We has been built up long-term cooperation with SKF company, could make a bulk order of the W 637/4 XR-2Z Which SKF W637/4XR-2Z 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.

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