d - 105 mm

Fw - 118 mm

D - 145 mm

B - 40 mm

C - 40 mm

r min. - 1,1 mm

da min. - 111,5 mm

da max - 116 mm

Da max. - 138,5 mm

db min - 120 mm

ra max. - 1 mm

Weight - 1,91 Kg

Basic dynamic load rating (C) - 157 kN

Basic static load rating (C0) - 306 kN

(Grease) Lubrication Speed - 3900 r/min

(Oil) Lubrication Speed - 4600 r/min

• Model Number: NNU4921K
• Inner Diameter：105mm Outer Diameter：145mm Width：40mm
• Type：Cylindrical Roller Bearings
• Update date：2025-04-22
• Application:pressure control valve,centrifugal pump,sterilizers,flow control valve,laser devices,Industrial equipment,lifting equipment Hoisting hoist,thin metal materials,food safety,Machine tool accessories,CNC
• Similar models:CX NN4921K ISO NNU4921 CX NNU4921V KOYO NNU4921K NSK RSF-4921E4 NTN NNU4921 CYSD NNU4921K/W33 NSK RS-4921E4 ISO NNU4921K NTN NN4921K
• BEARING POWER International Trading Co.,Ltd. specialize in NNU4921K products，there is large inventory of KOYO NNU4921K . We has been built up long-term cooperation with KOYO company, could make a bulk order of the NNU4921K Which KOYO NNU4921K 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
  23936MBK	180	250	52	AST	Spherical Roller Bearings
  30309	45	100	27,25	ISB	Tapered Roller Bearings
  5S-7218UCG/GNP42	90	160	30	NTN	Angular Contact Ball Bearings
  7303CGD2/GNP4	17	47	14	NTN	Angular Contact Ball Bearings
  7417				Ruville	Wheel Bearings
  H238148/H238110	174,625	311,15	82,55	Timken	Tapered Roller Bearings
  BTH1232	30	62	48	SKF	Tapered Roller Bearings
  HM743345/HM743310	209,55	333,375	69,85	KOYO	Tapered Roller Bearings
  NJ2330 M	150	320	108	AST	Cylindrical Roller Bearings
  NK45/30	45	55	30	KOYO	Needle Roller Bearings
  NK70/25	70	85	25	AST	Needle Roller Bearings
  NUP306E	30	72	19	CYSD	Cylindrical Roller Bearings
  RW4ZZ	6,35	15,875		AST	Deep Groove Ball Bearings
  W2-3/8	60,325	91,29	25,4	INA	Thrust Ball Bearings
  F-4	1.3437	.6875		Aetna	THRUST BALL BEARINGS
  XLJT-6E	6.0000	8.0000	1.0000	RHP	ANGULAR CONTACT BALL BEARINGS
  AN24			.8230	Torrington	LOCKNUTS
  RBY10	4.2500	10.0000	5.5000	RBC	YOKE TYPE TRACK ROLLER
  MUL321	105	225	49	Rollway	CYLINDRICAL ROLLER BEARINGS
  K-25020CPO	250	290	20	CONSOLIDATED	DEEP GROOVE BALL BEARINGS