BT4B 332981/HA4 Bearings

Four-row tapered roller bearings BT4B 332981/HA4 877.888mm*1220mm*844.55mm bearings BT4B 332981/HA4 bearings rolling mill bearings BT4B 332981/HA4


Four-row tapered roller bearings BT4B 332981/HA4 can accommodate combined (radial and axial) loads at low to moderate speeds. BT4B 332981/HA4  bearings  and other four row tapred roller bearings is used almost exclusively in work roll applications such as rolling mills.

1 Technical data of four-row tapered roller bearings BT4B 332981/HA4(TQO design)

Technical drawings of BT4B 332981HA4 four row tapered roller bearings

d 877.888 mm

D 1220 mm

B 844.55 mm

T 844.55 mm

d1 ≈ 950 mm

D1 ≈ 1090 mm

r1,2 min. 4.8 mm

r3,4 min. 12.7 mm

Calculation data

Basic dynamic load rating C 28100 kN

Basic static load rating C0 76500 kN

Fatigue load limit Pu 4550 kN

Comparative radial load rating CF 6950 kN

Comparative axial load rating CFa 1140 kN

Thrust factor K 1.76

Calculation factor e 0.33

Calculation factor Y1 2

Calculation factor Y2 3

Calculation factor Y0 2


Mass bearing 3080 kg

2 Code explanation of bearings BT4B 332981HA4

BT4B: four-row taper roller bearing

332981: special taper roller bearing

HA4: out and inner rings and rollers of case hardened steel.


3 Pictures of bearings BT4B 332981HA4

Four Row-tapered-roller-bearings-Four-row tapered roller bearings-BT4B 332981HA4

4 Application of BT4B332981HA4 bearings

work rolls in rolling mills

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