Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Four-row tapered roller bearings -- Four-row tapered roller bearings, TQI design SKF 331999

331999

Design

Design variant/feature

TQI

Dimensions

d		431.8	mm
D		571.5	mm
B		366.713	mm
T		320.675	mm
d₁	≈	499	mm
D₁	≈	550	mm
r_1,2	min.	6.4	mm
r_3,4	min.	1.5	mm

Calculation data

Basic dynamic load rating	C	4950	kN
Basic static load rating	C₀	14000	kN
Fatigue load limit	P_u	1060	kN
Comparative radial load rating	C_F	1290	kN
Comparative axial load rating	C_Fa	282	kN
Thrust factor	K	1.33
Calculation factor	e	0.44
Calculation factor	Y₁	1.5
Calculation factor	Y₂	2.3
Calculation factor	Y₀	1.4

Mass

Mass bearing

250

Model Number: 331999
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, TQI design
Update date：2026-04-16
Application:boring bar boring bar,SPA equipment,Broadcasting System,labor insurance,Spectrum Products,powder metallurgy,Anesthetic Equipment,ventilator anesthesia machine etc,experimental equipment,Processing machinery,Industrial
Similar models:331999
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7411 BGBM	55	140	33	Bearings, units and housings
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GEM 70 ESL-2LS	70	105	65	Bearings, units and housings
NU 1056 M	280	420	65	Bearings, units and housings
NUP 210 ECJ	50	90	20	Bearings, units and housings
S7020 ACD/P4A	100	150	24	Bearings, units and housings
SAF 23056 KAT x 10	254	-	-	Bearings, units and housings
W 63802 R-2Z	15	24	7	Bearings, units and housings

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