Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Four-row tapered roller bearings -- Four-row tapered roller bearings, TQO design SKF BT4B 328725 G/HA1

BT4B 328725 G/HA1

Design

Design variant/feature

TQO/GWI

Dimensions

d		300	mm
D		440	mm
B		280.988	mm
T		279.4	mm
d₁	≈	334	mm
D₁	≈	380	mm
r_1,2	min.	3.3	mm
r_3,4	min.	4.8	mm

Calculation data

Basic dynamic load rating	C	3190	kN
Basic static load rating	C₀	7800	kN
Fatigue load limit	P_u	670	kN
Comparative radial load rating	C_F	850	kN
Comparative axial load rating	C_Fa	175	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

145

Model Number: BT4B 328725 G/HA1
Inner Diameter：300mm Outer Diameter：440mm 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：2025-12-09
Application:construction machinery and equipment,water,medical equipment,welding equipment,Spectrum Products,organic raw materials,agricultural testing and analysis equipment and related,gear grinding machine,Forging machine,journal lathe,Vertical machining
Similar models:BT4B 328725 G/HA1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
31237	79.375	107.92	11.13	Seals
32560	82.55	120.68	11.13	Seals
6013 M	65	100	18	Bearings, units and housings
71918 ACE/HCP4AH1	90	125	18	Bearings, units and housings
811/1000 M	1000	1180	140	Bearings, units and housings
811/900 M	900	1060	130	Bearings, units and housings
H 2319 EL	85	125	90	Bearings, units and housings
IR 14x17x17	14	17	17	Bearings, units and housings
NU 1026 ML	130	200	33	Bearings, units and housings
S7007 ACB/P4A	35	62	14	Bearings, units and housings
PSM 202520 A51	20	25	20	Bearings, units and housings
SAFS 22515-11 x 2.3/8 TLC	60.325	-	-	Bearings, units and housings

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Hot number： 2307 E-2RS1KTN9 51205 6009/HR11QN 61815-2RS1 61828-2RS1 7019 CE/P4AL1 7048 ACD/HCP4A 71918 ACD/P4A 71972 AMB BT4B 328838 BG/HA1VA902 FY 1.11/16 FM NCF 2988 V SSAFS 22220 T W 618/1.5 W 61903-2RZ