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 - 2 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: NNU4921
• Inner Diameter：105mm Outer Diameter：145mm Width：40mm
• Type：Cylindrical Roller Bearings
• Update date：2025-12-12
• Application:teaching equipment,other CNC,Food testing,pipe fittings Steel industry,Air,Textile Industry Accessories and Accessories,Antenna Potentials,Machine tools,water protection,flexible processing,Garment Accessories
• Similar models:KOYO NNU4921K CYSD NNU4921/W33 ISB NNU4921SPW33 KOYO NNU4921 NTN NNU4921C1NAP4 NSK RS-4921E4 NSK NNU4921K NACHI NNU4921 SKF NNU4921B/SPW33 NTN NN4921K
• BEARING POWER International Trading Co.,Ltd. specialize in NNU4921 products，there is large inventory of KOYO NNU4921 . We has been built up long-term cooperation with KOYO company, could make a bulk order of the NNU4921 Which KOYO NNU4921 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
  20209 KC+H209	45	85	19	ISO	Spherical Roller Bearings
  1603	7,9375	22,225	7,14248	FBJ	Deep Groove Ball Bearings
  160PCR3302	160			NSK	Cylindrical Roller Bearings
  20320-K-MB-C3	100	215	47	FAG	Spherical Roller Bearings
  231/630 CA/W33	1030	630	315	SKF	Spherical Roller Bearings
  6811LU	55,000	72,000	9,000	NTN	Deep Groove Ball Bearings
  4T-56425/56662	107,95	168,275	36,512	NTN	Tapered Roller Bearings
  5566/5535	55,562	122,238	43,658	NSK	Tapered Roller Bearings
  617/4	4	7	2	CX	Deep Groove Ball Bearings
  6303	17	47	14	ZEN	Deep Groove Ball Bearings
  7013CG/GNP4	65	100	18	NTN	Angular Contact Ball Bearings
  CSEG080	203,2	254	25,4	INA	Deep Groove Ball Bearings
  N2972	360	480	72	CX	Cylindrical Roller Bearings
  NF212	60	110	22	FBJ	Cylindrical Roller Bearings
  RXLS 4.1/4	107,95	152,4	22,23	SIGMA	Cylindrical Roller Bearings
  T95W	24,13	50,8	15,875	Timken	Thrust Roller Bearings
  UCF217-52	82,55			FYH	Bearing Units
  LDJ12	12	32	14	R&M	DEEP GROOVE BALL BEARINGS
  NK43/30	53		30	INA	NEEDLE BEARINGS
  NJ2207E	35	72	23	Torrington	CYLINDRICAL ROLLER BEARINGS