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：2026-04-16
Application:other rubber,internal combustion engine,hydraulic control element,Cylinder Micro,preservation equipment,beverage production,Hair styling device,crimping tools,electromagnetic clutch,thin metal materials,Antenna Industry
Similar models:BT4B 328345/HA1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
10x24x7 HMSA10 V	10	24	7	Seals
11410	28.575	73.03	11.91	Seals
21091	53.975	73.03	11.13	Seals
523154	936.625	-	-	Seals
630/8-2RS1	8	22	11	Bearings, units and housings
99118	30.1752	35.56	11.1252	Seals
BS2-2314-2RS/VT143	70	150	60	Bearings, units and housings
NJ 305 ECJ	25	62	17	Bearings, units and housings
PBM 223240 M1G1	22	32	40	Bearings, units and housings
PCM 222530 M	22	25	30	Bearings, units and housings
PRM 202325	20	23	25	Bearings, units and housings
SAF 22624 x 4.1/8 TLC	104.775	-	-	Bearings, units and housings

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