size,mm

d	39.980
D	80.035
T	20.142

specified load,N

Dynamic load (1) C 1	58800
Coefficient (5) e	0.40
Coefficient (5) Y	1.49
Dynamic load (2) C 90	15200
Dynamic load (2) C a90	10500
Coefficient (5) K	1.45
Static load C 0	68900

bearing designation

inner ring	28156
housing washer	28317

Bearings size, mm

B	19.650
C	15.875
a (3)	-3.6

Axial dimension, mm

Maximum shoulder chamfer radius R (4)	2.3
Shaft shoulder diameter D a	45.0
Diameter of the shoulder d b	49.0

Bearings seat size, mm

Maximum shoulder fillet radius r (4)	1.5
Shoulder diameter D a	73.0
Shoulder diameter D b	69.0

retainer

A a	1.10
A b	1.10

coefficient

G 1	20.7
G 2	12.5
C g	0.0709

weight kg

weight kg	0.43