BT4-0021 G/HA1

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
206.375 mm
Bore diameter
D
282.575 mm
Outside diameter
B
190.5 mm
Total bearing width over inner rings
T
190.5 mm
Total bearing width over outer rings
d1
221 mm
Abutment diameter shaft
D1
248 mm
Abutment diameter housing
r1,2
min.0.8 mm
Chamfer dimension inner ring
r3,4
min.3.3 mm
Outer ring radius (chamfer)

Calculation data

Basic dynamic load rating C
1 400 kN
Basic static load rating C0
3 350 kN
Fatigue load limit Pu
305 kN
Comparative radial load rating CF
340 kN
Comparative axial load rating CFa
85.2 kN
Thrust factor K
1.15
Limiting value e
0.5
Calculation factor Y1
1.35
Calculation factor Y2
2
Calculation factor Y0
1.3

Description

Properties

Bearing part Complete bearing
Design TQO
Number of rows 4
Locating feature, bearing outer ring None
Bore type Cylindrical with helical groove
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 36.6 kg
eClass code 23-05-09-10

(206.375X282.575X190.5) (BT4-0021GHA1)

Additional information

Weight 36.6 kg
Size (mm)

Colour