(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：2025-04-23
• Application:Industrial,preservation equipment,food testing,Machine tool accessories,Embroidery,Laser Devices,medical equipment,Spectrum Products,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,medical equipment,powder metallurgy
• Similar models:NTN 4T-3781/3720 FBJ 3781/3720 ISO 3781/3720 AST 3781/3730 Timken 3781/3720 Timken 3781/3729D+X1S-366 NACHI 3781/3730 CX 3781/3720
• 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
  163150/163210P	150	210	84	Gamet	Tapered Roller Bearings
  22315 W33	75	160	55	MPZ	Spherical Roller Bearings
  22348RHAK	240	500	155	KOYO	Spherical Roller Bearings
  3979/3920	57,15	112,712	30,162	ISO	Tapered Roller Bearings
  3981/3920	58.738	112.712	30.162	NACHI	Tapered Roller Bearings
  54320U+U320	103			ISO	Thrust Ball Bearings
  6213-2Z/VA208	120	65	23	SKF	Deep Groove Ball Bearings
  EE2S ZZ	6,35	19,05	7,142	KOYO	Deep Groove Ball Bearings
  EXFCE214	70			SNR	Bearing Units
  GE530DO	530	710	243	ISO	Plain Bearings
  NN4040C1NAP4	200	310	109	NTN	Cylindrical Roller Bearings
  TA 243216 Z	24	32	16	IKO	Needle Roller Bearings
  U298/U261L	34,987	65	18,1	Timken	Tapered Roller Bearings
  ZBL.20.0744.201-2SPTN	648	847	56	ISB	Thrust Ball Bearings
  GS81115	77	100		FAG	THRUST ROLLER BEARINGS
  MM-7	.4375		.5625	Aurora	ROD ENDS
  MI-25-4S	1.5625		1.2600	McGill	NEEDLE BEARINGS
  H3196	480	620		SKF (Old No.)	ADAPTERS
  UL816	8	16	4	RMB	DEEP GROOVE BALL BEARINGS
  294/500EM	500	870		CONSOLIDATED	SPHERICAL ROLLER THRUST BEARINGS