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：2025-12-09
Application:Cylinder Pneumatic Treatment Element,air conditioning tools,Die,cleaners,CNC,hydraulic pressure gauge,electrocardiograph,sleep monitoring,Hydraulic Equipment,container finishing,tapered grinder
Similar models:BT4B 328345/HA1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
12x20x5 CRSA1 R	12	20	5	Seals
390x430x16 HDS2 R	390	430	16	Seals
51108	40	60	13	Bearings, units and housings
6008 N	40	68	15	Bearings, units and housings
6324 M/C3VL2071	120	260	55	Bearings, units and housings
D/W R6-2RS1	9.525	22.225	7.142	Bearings, units and housings
FSYE 3 N-118	76.2	-	-	Bearings, units and housings
HJ 338 EC	190	264	29	Bearings, units and housings
NU 220 ECJ	100	180	34	Bearings, units and housings
SAW 23518 x 3.1/8 TLC	79.375	-	-	Bearings, units and housings
SILR 25 ES	25	-	20	Bearings, units and housings
TUJ 25 TF	25	-	-	Bearings, units and housings

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