Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Four-row tapered roller bearings -- Four-row tapered roller bearings, TQO design SKF TQO design

BT4-8170 E81/C550

SKF Explorer

Design

Design variant/feature

TQOSN/GWSI

Dimensions

d		431.8	mm
D		571.5	mm
B		336.55	mm
T		336.55	mm
d₁	≈	461	mm
D₁	≈	518	mm
r_1,2	min.	1.5	mm
r_3,4	min.	3.3	mm

Calculation data

Basic dynamic load rating	C	5850	kN
Basic static load rating	C₀	13400	kN
Fatigue load limit	P_u	1020	kN
Comparative radial load rating	C_F	1250	kN
Comparative axial load rating	C_Fa	265	kN
Thrust factor	K	1.34
Calculation factor	e	0.44
Calculation factor	Y₁	1.5
Calculation factor	Y₂	2.3
Calculation factor	Y₀	1.4

Mass

Mass bearing

237

Model Number: TQO design
Inner Diameter：431.8mm Outer Diameter：571.5mm 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：2025-11-29
Application:relay,Automation,mathematical instruments,Special Equipment,vacuum filter,stacker lift platform,Polymer,car shock absorber,shaft milling machine,Grinding and polishing equipment,Gear grinding machine
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Model No.	Inner Diameter	Outer Diameter	Width	Type
305 VRME R	299	-	-	Seals
51228	140	200	46	Bearings, units and housings
6134	15.875	25.07	6.35	Seals
81248 M	240	340	78	Bearings, units and housings
89413 TN	65	140	45	Bearings, units and housings
AOH 2352 G	240	260	205	Bearings, units and housings
HA 2317	74.6125	85	82	Bearings, units and housings
IR 30x35x20.5	30	35	20.5	Bearings, units and housings
K 20x26x13	20	26	13	Bearings, units and housings
NU 309 ECM	45	100	25	Bearings, units and housings
PSMF 253220 A51	25	32	20	Bearings, units and housings
W 639-2RS1	9	30	10	Bearings, units and housings

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Hot number： 12382 23134-2CS5K/VT143 BD-23996 CAK/W33-OH 3996 H 51132 M 597334 7215 BEGAM 78738 N 1022 KTNHA/SP NA 2210.2RS NU 2220 ECJ OKBS 117 OKBS 118 OKBS 119 PPM 101212 RNA 49/22