Bearings, units and housings -- Roller bearings -- Tapered roller bearings -- Four-row tapered roller bearings -- Four-row tapered roller bearings, TQO design SKF 330990 A

330990 A

Design

Design variant/feature

TQO.1/GWI

Dimensions

d		635	mm
D		901.7	mm
B		654.05	mm
T		654.05	mm
d₁	≈	694	mm
D₁	≈	800	mm
r_1,2	min.	3.3	mm
r_3,4	min.	6.4	mm

Calculation data

Basic dynamic load rating	C	15700	kN
Basic static load rating	C₀	45000	kN
Fatigue load limit	P_u	2900	kN
Comparative radial load rating	C_F	4250	kN
Comparative axial load rating	C_Fa	693	kN
Thrust factor	K	1.76
Calculation factor	e	0.33
Calculation factor	Y₁	2
Calculation factor	Y₂	3
Calculation factor	Y₀	2

Mass

Mass bearing

1420

Model Number: 330990 A
Inner Diameter：635mm Outer Diameter：901.7mm 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：2026-04-16
Application:embroidery cloth,Automobile,forming machine,machine tool spindle,rubber products machinery and equipment,pump industry,electrostatic protection,small appliances,squeeze machine etc,Laser Devices,molding machine
Similar models:330990 A
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3209 A-2Z	45	85	30.2	Bearings, units and housings
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7007 ACB/P4A	35	62	14	Bearings, units and housings
HK 1416.2RS	14	20	16	Bearings, units and housings
NJ 316 ECJ	80	170	39	Bearings, units and housings
NJ 412	60	150	35	Bearings, units and housings
NNU 41/950 M/W33	950	1500	545	Bearings, units and housings
NUTR 3072 A	30	72	29	Bearings, units and housings
P 1. TR	25.4	-	-	Bearings, units and housings
PCMF 121417 E	12	14	17	Bearings, units and housings
SYNT 80 FTS	80	-	-	Bearings, units and housings
WBB1-8706 R-2RS1	6	12	4	Bearings, units and housings

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