305256 DDouble row angular contact ball bearing with two-piece inner ring and relubrication feature

SKU: 305256 DDouble row angular contact ball bearing with two-piece inner ring and relubrication feature

Double row angular contact ball bearing, with two-piece inner ring and relubrication feature, correspond to a pair of single row angular contact ball bearings in a back-to-back arrangement. The two-piece inner ring enables incorporation of more balls, resulting in higher load carrying capacity. The annular lubrication groove and holes in the outer ring facilitates relubrication.

ID:103333

Dimensions - 305256 D

Dimensions

d
120 mm
Bore diameter
D
190 mm
Outside diameter
B
66 mm
Width
d1
145.1 mm
Shoulder diameter inner ring for two-piece inner ring
D1
172.1 mm
Shoulder diameter outer ring
b
8.3 mm
Width annular lubrication groove at outer ring
K
4.5 mm
Diameter lubrication hole (outer ring)
r1,2
min. 2 mm
Chamfer dimension inner ring for two-piece inner ring
a
130 mm
Distance pressure point(s)

Abutment dimensions - 305256 D

Abutment dimensions

da
min. 125 mm
Abutment diameter shaft
Da
max. 170 mm
Abutment diameter housing
ra
max. 2 mm
Fillet radius

Calculation data

Basic dynamic load rating C
182 kN
Basic static load rating C0
232 kN
Fatigue load limit Pu
8 kN
Reference speed
3 400 r/min
Limiting speed
3 600 r/min
Calculation factor kr
0.095
Limiting value e
0.86
Calculation factor X
0.62
Calculation factor Y0
0.63
Calculation factor Y1
0.73
Calculation factor Y2
1.17

Mass

Mass bearing
7.08 kg

Reviews

There are no reviews yet.

Be the first to review “305256 DDouble row angular contact ball bearing with two-piece inner ring and relubrication feature”

Your email address will not be published. Required fields are marked *