BT4B 331168 B

Four-row tapered roller bearing

Four-row tapered roller bearings can accommodate combined heavy radial and axial loads at low to moderate speeds.

They are used almost exclusively in work roll applications such as rolling mills. SKF manufactures four-row tapered roller bearings in TQO and TQI designs, in many variants and with different features.

  • Very high radial load carrying capacity
  • Accommodate axial loads in both directions
  • Axial space-saving solution for roll necks
  • Low friction
  • Long service life

Dimensions

d
269.875 mm
Bore diameter
D
381 mm
Outside diameter
B
282.575 mm
Total bearing width over inner rings
T
282.575 mm
Total bearing width over outer rings
d1
293 mm
Abutment diameter shaft
D1
339 mm
Abutment diameter housing
r1,2
min.3.3 mm
Chamfer dimension inner ring
r3,4
min.3.3 mm
Outer ring radius (chamfer)

Calculation data

Basic dynamic load rating C
3 080 kN
Basic static load rating C0
7 500 kN
Fatigue load limit Pu
640 kN
Comparative radial load rating CF
815 kN
Comparative axial load rating CFa
132 kN
Thrust factor K
1.76
Limiting value e
0.33
Calculation factor Y1
2
Calculation factor Y2
3
Calculation factor Y0
2

Description

Properties

Candidate for remanufacturing Yes
Bearing part Complete bearing
Design TQO
Number of rows 4
Locating feature, bearing outer ring None
Bore type Cylindrical
Cage Sheet metal
Arrangement of contact angle (double-row bearing) Not applicable
Matched arrangement No
Coating Without
Sealing Without
Lubricant None
Relubrication feature With

Logistics

Product net weight 103 kg
eClass code 23-05-09-10

(269.875X381X282.575) (BT4B331168B)

Additional information

Weight 103 kg
Size (mm)

Colour