(dimensions in inches)

Bearing Type - single row assembly

Bore Dia (d) - 1.3750

Outer Dia (D) - 3.3750

Width (B) - 1.1875

Outer Width (Bo) - 0.9375

Inner Width (Bi) - 1.1875

Radius (min) (rs) - 0.138

Radius (min) (rs1) - 0.130

Weight (g) - 1,045.00

Material - 52100 chrome steel or equiavelent

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

• Model Number: 3872/3820
• Inner Diameter：34,925mm Outer Diameter：85,725mm Width：30,1625mm
• Type：Tapered Roller Bearings
• Update date：2025-12-16
• Application:gantry processing,EEG,Industry,industry test,milling head plug,engineering machinery,supporting facilities,packaging machinery,Cylinder Micro,motor,generator
• Similar models:KOYO 3872/3821 ISO 3872/3820 Timken 3872A/3820 Timken 3872/3821 Timken 3872/3820 AST 3872/3820 NTN 4T-3872/3820 KOYO 3872A/3820 CX 3872/3820 FBJ 3872/3820
• BEARING POWER International Trading Co.,Ltd. specialize in 3872/3820 products，there is large inventory of AST 3872/3820 . We has been built up long-term cooperation with AST company, could make a bulk order of the 3872/3820 Which AST 3872/3820 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
  1207EKTN9	35	72	17	SKF	Self-Aligning Ball Bearings
  1304K+H304	20	52	15	ISO	Self-Aligning Ball Bearings
  6321-RS	105	225	49	CYSD	Deep Groove Ball Bearings
  BTH-1053B	45	88	55	SKF	Tapered Roller Bearings
  GEWZ34ES-2RS	34,925	55,563	52,375	LS	Plain Bearings
  NJ2319-E-TVP3+HJ2319-E	95	200	67	NKE	Cylindrical Roller Bearings
  NJ213E	65	120	23	NTN	Cylindrical Roller Bearings
  NU2220	100	180	46	KOYO	Cylindrical Roller Bearings
  NUP219-E-TVP3	95	170	32	NKE	Cylindrical Roller Bearings
  RNA4905	30	42	17	ZEN	Needle Roller Bearings
  RNA69/22	28	39	30	AST	Needle Roller Bearings
  S1PPB73ST	6,35			AST	Bearing Units
  SN220with20220	100	-	110	FAG	PILLOW BLOCKS
  LS90120	90	120		FAG	THRUST NEEDLE BEARINGS
  MS-7	.6250	1.8125	.6250	FAG	DEEP GROOVE BALL BEARINGS
  TLAM3516	42		16	IKO	NEEDLE BEARINGS
  SN518	80		100	SKF	PILLOW BLOCKS
  GE170SX	170	260	54	INA	SPHERICAL PLAIN BEARINGS
  51315				SKF	THRUST BALL BEARINGS
  6306.2RS	30	72	19	STEYR	DEEP GROOVE BALL BEARINGS