d - 346.075 mm

D - 488.95 mm

T - 200.025 mm

C - 158.75 mm

r_1,2 - min. - 6.4 mm

r_3,4 - min. - 1.5 mm

a - 186 mm

Basic dynamic load rating - C - 2640 kN

Basic static load rating - C₀ - 6300 kN

Fatigue load limit - P_u - 510 kN

Comparative radial load rating - C_F - 655 kN

Comparative axial load rating - C_Fa - 216 kN

Thrust factor - K - 1.74

Calculation factor - e - 0.33

Calculation factor - Y₁ - 2

Calculation factor - Y₂ - 3

Calculation factor - Y₀ - 2

Mass bearing - 110 kg

Variants - TDO/D

• Model Number:331981
• Inner Diameter：488,95mm Outer Diameter：346,075mm Width：200,025mm
• Type：Tapered Roller Bearings
• Update date：2025-12-16
• Application:Seals,Generator,Plastic Equipment,rolling mill roll neck and slowdown device,Water Monitoring,embroidery cloth,internal combustion engine,equipment,altimeter etc,food sterilization,spectrometer
• Similar models:SKF 331981
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• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  22256-E1A-MB1	280	500	130	FAG	Spherical Roller Bearings
  53177/53375	44,45	95,25	30,958	Fersa	Tapered Roller Bearings
  609/630 MB	850	630	71	SKF	Deep Groove Ball Bearings
  6806ZE	30	42	7	NACHI	Deep Groove Ball Bearings
  AST20 8560	85	90		AST	Plain Bearings
  DCL118	17,462	22,225	12,7	NTN	Needle Roller Bearings
  F-207033	33	52	16	FAG	Cylindrical Roller Bearings
  K25X30X20	25,000	30,000		NTN	Needle Roller Bearings
  LL687949/10	977,9	1130,3	66,675	ISO	Tapered Roller Bearings
  NJ2309E/97	45,000	97,000	36,000	NTN	Cylindrical Roller Bearings
  S61904-2RS	20	37	9	ZEN	Deep Groove Ball Bearings
  W311PPG	55	120	49,23	Timken	Deep Groove Ball Bearings
  BR-35	.7500	1.7500	.5000	FED	DEEP GROOVE BALL BEARINGS
  NCF-28/950V	950	1150	118	FAG	CYLINDRICAL ROLLER BEARINGS
  2003	.4062	.7500		Andrews	THRUST BALL BEARINGS
  UCF205-15	.9375			IPTCI	PILLOW BLOCKS
  W-5/16				FBC	THRUST BALL BEARINGS
  4462	6.0000	8.7500		INA	THRUST BALL BEARINGS
  MUC230	150	270	45	Rollway	CYLINDRICAL ROLLER BEARINGS
  SSFY-115	1.9375			CONSOLIDATED	STAINLESS STEEL PILLOW BLOCKS