71940ACD/P4A Bearing

super-precision angular contact ball bearings 71940ACD/P4A 200x280x38mm bearing bearing 200*280*38mm 71940ACD/P4A bearings


Single row super-precision angular contact ball bearings  71940ACD/P4A are non-separable and have raceways in the inner and outer rings that are displaced relative to each other in the direction of the bearing axis. 

71940ACD/P4A angular contact ball bearing is always adjusted against a second bearing or used in sets.

1 Technical datas of super precision angular contact ball bearings 71940ACD/P4A

Angular-Contact-Ball-Bearings Angular-Contact-Ball-Bearing-71940ACDP4-drawing

d 200 mm

D 280 mm

B 38 mm

d1 224.7 mm

d2 224.7 mm

D1 255.3 mm

r1,2 min. 2.1 mm

r3,4 min. 1 mm

a 75.2 mm

Abutment dimensions

da min. 209 mm

db min. 209 mm

Da max. 271 mm

Db max. 275 mm

ra max. 2 mm

rb max. 1 mm

dn 231.4 mm

Angular-Contact-Ball-Bearing Angular-Contact-Ball-Bearing-71940ACDP4-drawing

Calculation data

Basic dynamic load rating C 199 kN

Basic static load rating C0 250 kN

Fatigue load limit Pu 6.8 kN

Attainable speed for grease lubrication 4300 r/min

Attainable speed for oil-air lubrication 6300 r/min

Contact angle α 25 °

Ball diameter Dw 25.4 mm

Number of balls z 26   


Mass bearing          6.1 kg

2 Product picture of 71940 ACD/P4A bearings


3 Code Analyse of 71940ACD/P4A

ACD-angular contact ball bearings with 25 angles

P4A-precision rating

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