(dimensions in inches)

Bearing Type - single row assembly

Bore Dia (d) - 1.9375

Outer Dia (D) - 3.6718

Width (B) - 1.1875

Outer Width (Bo) - 0.9375

Inner Width (Bi) - 1.1930

Radius (min) (rs) - 0.138

Radius (min) (rs1) - 0.031

Weight (g) - 833.00

Material - 52100 chrome steel or equiavelent

The assembly part number lists the cone part number first and then the cup part number.

• Model Number:3781/3730
• Inner Diameter：49,2125mm Outer Diameter：93,26372mm Width：30,1625mm
• Type：Tapered Roller Bearings
• Update date：2025-12-12
• Application:thin metal materials,industrial fans,food testing,thread processing machine,gantry processing,Anesthetic Equipment,other processing,pump accessories,linear drive,generator,tower crane
• Similar models:ISO 3781/3720 Timken 3781/3720 FBJ 3781/3720 NTN 4T-3781/3720 NACHI 3781/3730 CX 3781/3720 Timken 3781/3729D+X1S-366 AST 3781/3730
• BEARING POWER International Trading Co.,Ltd. specialize in 3781/3730 products，there is large inventory of AST 3781/3730 . We has been built up long-term cooperation with AST company, could make a bulk order of the 3781/3730 Which AST 3781/3730 is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express.Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  23024 KCW33+AH3024	120	180	46	CX	Spherical Roller Bearings
  2902	15	31	12	INA	Thrust Ball Bearings
  29326	130	225	58	Timken	Thrust Roller Bearings
  29434-E1	170	340	103	FAG	Thrust Roller Bearings
  EE130900D/131400+Y5S-131400	228,6	355,6	120,65	Timken	Tapered Roller Bearings
  7336 A	180	380	75	CX	Angular Contact Ball Bearings
  BE354522ASYB1	35	45		KOYO	Needle Roller Bearings
  IJ122017	28			ILJIN	Angular Contact Ball Bearings
  HK2520	25	32	20	KOYO	Needle Roller Bearings
  K10x14x13	10	14	13	ISO	Needle Roller Bearings
  K89415-M	75	160		NBS	Thrust Roller Bearings
  NN3948MB	240	300	60	NSK	Cylindrical Roller Bearings
  NUP 2310	50	110	40	ISB	Cylindrical Roller Bearings
  H3026	130	155		FAG	ADAPTERS
  62819-2RS	95	120	16	ELGES	DEEP GROOVE BALL BEARINGS
  RCJT11/8	1.1250			FAF	PILLOW BLOCKS
  R405	105	225	49	HOFF	CYLINDRICAL ROLLER BEARINGS
  SN522	100		120	STEYR	PILLOW BLOCKS
  FYT115/16WF	1.9375			SKF	PILLOW BLOCKS
  SUCSP204MM	20			PTI	STAINLESS STEEL PILLOW BLOCKS