Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Four-row tapered roller bearings -- Four-row tapered roller bearings, TQO design SKF BT4B 328391 G/HA1

BT4B 328391 G/HA1

Design

Design variant/feature

TQO/GWI

Dimensions

d		488.95	mm
D		622.3	mm
B		365.125	mm
T		365.125	mm
d₁	≈	515	mm
D₁	≈	570	mm
r_1,2	min.	3	mm
r_3,4	min.	3	mm

Calculation data

Basic dynamic load rating	C	5610	kN
Basic static load rating	C₀	17300	kN
Fatigue load limit	P_u	1290	kN
Comparative radial load rating	C_F	1500	kN
Comparative axial load rating	C_Fa	259	kN
Thrust factor	K	1.66
Calculation factor	e	0.35
Calculation factor	Y₁	1.9
Calculation factor	Y₂	2.9
Calculation factor	Y₀	1.8

Mass

Mass bearing

265

Model Number: BT4B 328391 G/HA1
Inner Diameter：488.95mm Outer Diameter：622.3mm 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：2026-06-13
Application:Infrared Technology,Embroidery,milling head plug,Oral Equipment,mechanical and electrical,Cleaning equipment,mathematical instruments,Digital Generator,non-ferrous metal alloy,molding machine,air purification
Similar models:BT4B 328391 G/HA1
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Model No. Inner Diameter Outer Diameter Width Type

1205 ETN9
71922 CD/HCP4AH1
OKC 350
SNW 11x1.15/16
SNW 136x5.3/8

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Hot number： 22230 CC/W33 23068 CC/W33 25580/25520 6770 7015 ACE/P4AL GEH 50 ES-2LS HK 0908 NJ 1017 ML NU 2311 ECPH PSM 142010 A51 PWM 354130 SAW 23526 SNL 3060 G SSAFS 22220 T SYNT 50 L

Model No.	Inner Diameter	Outer Diameter	Width	Type
1205 ETN9
71922 CD/HCP4AH1
OKC 350
SNW 11x1.15/16
SNW 136x5.3/8