d - 66,675 mm

D - 112,712 mm

T - 30,162 mm

B - 30,048 mm

C - 23,812 mm

a - 25,9 mm

r min. - 3,6 mm

r2 min. - 0,8 mm

da min. - 80 mm

Da - 101 mm

db min - 74 mm

ra max. - 3,6 mm

rb max. - 0,8 mm

Db - 106 mm

Weight - 1,154 Kg

Basic dynamic load rating (C) - 111 kN

Basic static load rating (C0) - 164 kN

(Grease) Lubrication Speed - 3400 r/min

(Oil) Lubrication Speed - 4500 r/min

Calculation factor (e) - 0,4

Calculation factor (Y0) - 0,82

Calculation factor (Y1) - 1,49

• Model Number: 3984/3925
• Inner Diameter：66,675mm Outer Diameter：112,712mm Width：30,162mm
• Type：Tapered Roller Bearings
• Update date：2025-12-14
• Application:auto tools,forming machine,engine,noise reduction equipment,steam Hydraulic control element,building decoration raw materials and accessories,large agricultural machinery,Roller,Broadcasting System,Hydraulic Hose,decoration machinery
• Similar models:ISO 3984/3925 NSK 3984/3920 Fersa 3984/3925 KOYO 3984/3925 ISO 3984/3920 KBC 3984/3920 ISO 3984/3926 NTN 4T-3984/3920 Fersa 3984/3920 FBJ 3984/3925
• BEARING POWER International Trading Co.,Ltd. specialize in 3984/3925 products，there is large inventory of KOYO 3984/3925 . We has been built up long-term cooperation with KOYO company, could make a bulk order of the 3984/3925 Which KOYO 3984/3925 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
  29322M	110	190	48	FBJ	Thrust Roller Bearings
  3TM-SF04A61X3	22	67	21	NTN	Deep Groove Ball Bearings
  51230M	150	215	50	CRAFT	Thrust Ball Bearings
  5S-2LA-HSE904CG/GNP42	20	37	9	NTN	Angular Contact Ball Bearings
  61803	17	26	5	CRAFT	Deep Groove Ball Bearings
  BC1-0013AB	32	62	18	SKF	Cylindrical Roller Bearings
  KT 303527	30	35		IKO	Needle Roller Bearings
  NN3021 K	105	160	41	CX	Cylindrical Roller Bearings
  NU 2222 ECP	200	110	53	SKF	Thrust Ball Bearings
  NU3224	120	215	76	ISO	Cylindrical Roller Bearings
  SE 6002 ZZSTMSA7	15	32	9	KOYO	Deep Groove Ball Bearings
  SYNT 65 LTS	65	80	71	SKF	Bearing Units
  XLJ6	152,4	203,2	25,4	RHP	Deep Groove Ball Bearings
  RNA2201.2RSR.DZ	32		13.8	FAG	NEEDLE BEARINGS
  NATD6DZ	6	19	12	FAG (Old No.)	NEEDLE BEARINGS
  DLR200				RIV	THRUST BALL BEARINGS WITH SPHERICAL SEATING RINGS
  RT-763				INA	THRUST ROLLER BEARINGS
  LRJ13/8	1.3750	3.0000	.6875	RHP	CYLINDRICAL ROLLER BEARINGS
  32313	65	140	48	CONSOLIDATED	TAPERED ROLLER BEARINGS
  63828-ZZ	140	175	26	CONSOLIDATED	DEEP GROOVE BALL BEARINGS