Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Four-row tapered roller bearings -- Four-row tapered roller bearings, TQO design SKF BT4B 328704 G/HA1

BT4B 328704 G/HA1

Design

Design variant/feature

TQOE/GWI

Dimensions

d		685.8	mm
D		876.3	mm
B		434.975	mm
T		355.6	mm
d₁	≈	730	mm
D₁	≈	803	mm
r_1,2	min.	3.3	mm
r_3,4	min.	1.5	mm

Calculation data

Basic dynamic load rating	C	7210	kN
Basic static load rating	C₀	22000	kN
Fatigue load limit	P_u	1500	kN
Comparative radial load rating	C_F	1900	kN
Comparative axial load rating	C_Fa	393	kN
Thrust factor	K	1.4
Calculation factor	e	0.43
Calculation factor	Y₁	1.6
Calculation factor	Y₂	2.3
Calculation factor	Y₀	1.6

Mass

Mass bearing

580

Model Number: BT4B 328704 G/HA1
Inner Diameter：685.8mm Outer Diameter：876.3mm Width：-mm
Reference speed:- Limiting speed:-
Type：Bearings, units and housings Roller bearings Tapered roller bearings Four-row tapered roller bearings
Details： Four-row tapered roller bearings Four-row tapered roller bearings, TQO design
Update date：2026-04-16
Application:squeeze machine etc,food / grain / food equipment,motor,nail products,decoration machinery,Doppler,cleaners,gas turbine,instrumentation instrument,reinforced machinery,pipe fittings Steel industry
Similar models:BT4B 328704 G/HA1
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SYF 35 TF	35	-	-	Bearings, units and housings
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