d - 41,275 mm

D - 85,725 mm

T - 30,162 mm

B - 30,162 mm

C - 23,812 mm

a - 22,9 mm

r min. - 3,6 mm

r2 min. - 1,2 mm

da min. - 57 mm

Da - 75 mm

db min - 50,3 mm

ra max. - 3,6 mm

rb max. - 1,2 mm

Db - 81 mm

Weight - 0,83 Kg

Basic dynamic load rating (C) - 108 kN

Basic static load rating (C0) - 136 kN

(Grease) Lubrication Speed - 4800 r/min

(Oil) Lubrication Speed - 6400 r/min

Calculation factor (e) - 0,4

Calculation factor (Y0) - 0,82

Calculation factor (Y1) - 1,49

• Model Number: 3877/3821
• Inner Diameter：41,275mm Outer Diameter：85,725mm Width：30,162mm
• Type：Tapered Roller Bearings
• Update date：2025-12-16
• Application:paint paint,filter paper products,spring industry,power source,chamfering machine etc,Antenna Industry,Cylinder Type,sheet industry,forming machine,other mold,Power equipment
• Similar models:NTN 4T-3877/3820 ISO 3877/3820 Timken 3877/3820 Fersa 3877/3820 Timken 3877/3820B KOYO 3877/3821 Timken 3877/3821 CX 3877/3821 ISO 3877/3821 Timken 3877A/3820
• BEARING POWER International Trading Co.,Ltd. specialize in 3877/3821 products，there is large inventory of KOYO 3877/3821 . We has been built up long-term cooperation with KOYO company, could make a bulk order of the 3877/3821 Which KOYO 3877/3821 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
  23944 EKW33+OH3944	200	300	60	ISB	Spherical Roller Bearings
  3309 D	45	100	39,7	ISB	Angular Contact Ball Bearings
  4T-14131/14274	33,338	69,012	19,845	NTN	Tapered Roller Bearings
  51217	85	125	31	FBJ	Thrust Ball Bearings
  7202 B-UO	15	35	22	CX	Angular Contact Ball Bearings
  7415 ADF	75	190	90	ISO	Angular Contact Ball Bearings
  81132	160,000	200,000	31,000	NTN	Thrust Ball Bearings
  94700/94113	177,8	288,925	63,5	NSK	Cylindrical Roller Bearings
  KMJ28X35X13.8	28,000	35,000		NTN	Needle Roller Bearings
  MRJ5	127	254	50,8	RHP	Cylindrical Roller Bearings
  NKI 5/12M	5	15	12	JNS	Needle Roller Bearings
  NUP328-E-MA6	140	300	62	NKE	Cylindrical Roller Bearings
  PSHE50-N	50			INA	Bearing Units
  SFRW166-TT	4,7625	9,525		AST	Deep Groove Ball Bearings
  VKBA5377	70	196	130	SKF	Tapered Roller Bearings
  ZR3.40.4000.400-1SPPN	3624	4238	220	ISB	Thrust Roller Bearings
  NU2207	35	72	23	STEYR	CYLINDRICAL ROLLER BEARINGS
  GE100FO-2RS	100	160	85	INA	SPHERICAL PLAIN BEARINGS
  LBAS30	30	47	68	SKF	LINEAR RECIRCULATING BALL BEARINGS
  KF-350ARO	35.0000	36.5000	.7500	CONSOLIDATED	ANGULAR CONTACT BALL BEARINGS