size,mm

d	59.987
D	123.825
T	79.375
B	63.500

specified load,N

Dynamic load (1) C 1	307000
Coefficient (5) e	0.35
Coefficient (5) Y1	1.95
Coefficient (5) Y 2	2.90
Dynamic load (2) C 90	45800
Dynamic load (2) C a90	27100
Dynamic load (2) C 90 (2)	79700
Coefficient (5) K	1.69

bearing designation

inner ring	558-S
housing washer	552D
Separation ring (4)	X1S-558-S

Axial dimension, mm

Maximum shoulder chamfer radius R (3)	3.5
Diameter of the shoulder d b	75.0

Bearings seat size, mm

Maximum shoulder fillet radius r (3)	1.5
Shoulder diameter D a	115.0

melt

K a
K b

coefficient

G 1	91
G 2	21.1
G g	0.1108

weight kg

weight kg	4.31