d - 4 mm

D - 9 mm

B - 4 mm

d₁ - - 5.2 mm

D₂ - - 8.1 mm

D₃ - 10.3 mm

C - 1 mm

r_1,2 - min. - 0.1 mm

d_a - min. - 4.6 mm

r_a - max. - 0.1 mm

Basic dynamic load rating - C - 0.364 kN

Basic static load rating - C₀ - 0.114 kN

Fatigue load limit - P_u - 0.005 kN

Limiting speed - 40000 r/min

Calculation factor - k_r - 0.02

Calculation factor - f₀ - 6.5

Mass bearing - 0.0011 kg

• Model Number: W 638/4 R-2RS1
• Inner Diameter：9mm Outer Diameter：4mm Width：4mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-09
• Application:PVC,Other Machine Tools,engineering machine,hydraulic actuator,die casting mold,outdoor equipment,Rolling mill,spreader series,Hair styling device,marine analysis and testing equipment,security equipment
• Similar models:SKF W63800 SKF W638/4R-2Z ISO 63800ZZ SKF W638/3R-2Z SKF W63800-2RS1 FBJ 1638ZZ ISO 63800 SKF W63801-2RS1 SKF W638-2RZ SKF W63805R-2Z
• BEARING POWER International Trading Co.,Ltd. specialize in W638/4R-2RS1 products，there is large inventory of SKF W 638/4 R-2RS1 . We has been built up long-term cooperation with SKF company, could make a bulk order of the W 638/4 R-2RS1 Which SKF W638/4R-2RS1 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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