30217T71 J2/QDBMatched tapered roller bearings arranged back-to-back

SKU: 30217T71 J2/QDBMatched tapered roller bearings arranged back-to-back

Matched tapered roller bearings arranged back-to-back (O-arrangement, load lines diverge towards the bearing axis) accommodate high radial loads, axial loads in both directions, and tilting moments. The precision manufactured intermediate rings between the innner and outer rings enable a defined internal clearance or preload to be achieved when mounted. Matched tapered roller bearings are typically used in gearboxes, hoisting equipment, rolling mills, and machines in the mining industry.

ID:198799

Dimensions - 30217T71 J2/QDB

Dimensions

d
85 mm
Bore diameter
D
150 mm
Outside diameter
T
71 mm
Total width
d1
112 mm
Shoulder diameter of inner ring
C
58.5 mm
Width of outer rings
l
10 mm
Width of spacer ring
b
4 mm
Width of lubrication groove
K
3 mm
Diameter of lubrication hole
r1,2
min. 2.5 mm
Chamfer dimension
r5
min. 0.6 mm
Chamfer dimension
a
71 mm
Distance between pressure points

Abutment dimensions - 30217T71 J2/QDB

Abutment dimensions

db
min. 97 mm
Diameter of shaft abutment
Db
min. 141 mm
Diameter of shaft abutment
Cb
min. 6.5 mm
Minimum width of space required in housing on small side face
ra
max. 2 mm
Radius of fillet

Calculation data

Basic dynamic load rating C
303 kN
Basic static load rating C0
440 kN
Fatigue load limit Pu
51 kN
Reference speed
2 600 r/min
Limiting speed
4 300 r/min
Limiting value e
0.43
Calculation factor Y1
1.6
Calculation factor Y2
2.3
Calculation factor Y0
1.6

Mass

Mass
4.1 kg

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