(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：2025-12-11
• Application:wall industry,leather processing,Roller mill,position switch,milling head plug,electric pump,woodworking machinery,medical equipment,X-ray Equipment,marine analysis,noise inspection
• Similar models:Timken 3872/3821 FBJ 3872/3820 Timken 3872A/3820 AST 3872/3820 KOYO 3872A/3820 NTN 4T-3872/3820 Timken 3872/3820 ISO 3872/3820 KOYO 3872/3821 CX 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
  239/800R	800	1060	195	KOYO	Spherical Roller Bearings
  244234X/244330C	234,95	330	52,4	Gamet	Tapered Roller Bearings
  2788A/2736	38,1	74,612	23,812	Timken	Tapered Roller Bearings
  42688/42620	76,2	127	30,162	Fersa	Tapered Roller Bearings
  4T-29586/29522	63,5	107,95	25,4	NTN	Tapered Roller Bearings
  6244	220	400	65	NTN	Deep Groove Ball Bearings
  7020 ACB/P4A	150	100	24	SKF	Angular Contact Ball Bearings
  7022CPA	110	170	28	KOYO	Angular Contact Ball Bearings
  70BNR20XV1V	70	110	24	NSK	Angular Contact Ball Bearings
  7834CDB	170	215	22	CYSD	Angular Contact Ball Bearings
  AXK 0619 TN	6	19	2	NBS	Needle Roller Bearings
  KL507949-L507910	57,15	87,312	18,258	FAG	Tapered Roller Bearings
  MR115ZZ	5	11	4	ISO	Deep Groove Ball Bearings
  NA4924	120	165	45	NTN	Needle Roller Bearings
  TLAM 3516	35	42	16	IKO	Needle Roller Bearings
  W 61703-2Z	23	17	4	SKF	Deep Groove Ball Bearings
  LJT5/8	.6250	1.5625	.4375	RHP	ANGULAR CONTACT BALL BEARINGS
  R115P	15	35	11	HOFF	CYLINDRICAL ROLLER BEARINGS
  RKS.060.20.0744	672	816		SKF	SLEWING BEARINGS
  30x36x2.5mm	30	36	2.5	CONSOLIDATED	OIL SEALS