Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Four-row tapered roller bearings -- Four-row tapered roller bearings, TQI design SKF BT4B 328345/HA1

BT4B 328345/HA1

Design

Design variant/feature

TQI

Dimensions

d		279.4	mm
D		407	mm
B		320	mm
T		288	mm
d₁	≈	343	mm
D₁	≈	388	mm
r_1,2	min.	3.5	mm
r_3,4	min.	1.5	mm

Calculation data

Basic dynamic load rating	C	3580	kN
Basic static load rating	C₀	9000	kN
Fatigue load limit	P_u	765	kN
Comparative radial load rating	C_F	950	kN
Comparative axial load rating	C_Fa	159	kN
Thrust factor	K	1.73
Calculation factor	e	0.33
Calculation factor	Y₁	2
Calculation factor	Y₂	3
Calculation factor	Y₀	2

Mass

Mass bearing

140

Model Number: BT4B 328345/HA1
Inner Diameter：279.4mm Outer Diameter：407mm 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, TQI design
Update date：2026-08-19
Application:injection molding machine,instrument,Spectrum Products,surgical instruments,Machine tools,bio-chemical,vertical sawing machine,safety testing,garden machinery,agriculture,relay
Similar models:BT4B 328345/HA1
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Model No. Inner Diameter Outer Diameter Width Type

30x46x7 HMS5 V
626-Z
MVR1-40
IR 25x30x16 EGS
S71908 ACD/HCP4A

Purchase the SKF BT4B 328345/HA1 Four-row tapered roller bearings, TQI design Please fill in the following

Hot number： 17716 28x47x7 HMSA10 V 305 VRME R 32914 6032-RS1 FYT 1.1/4 TF/VA201 IR 25X30X16 IS1 K 89309 TN NA 6906 NU 208 ECKP NU 2230 ECM NUP 248 MA PWM 110125100 S7024 ACE/HCP4A SAF 22611 T

Model No.	Inner Diameter	Outer Diameter	Width	Type
30x46x7 HMS5 V
626-Z
MVR1-40
IR 25x30x16 EGS
S71908 ACD/HCP4A