d - 105 mm

D - 145 mm

E - 135 mm

B - 40 mm

C - 40 mm

r min. - 1,1 mm

Weight - 2 Kg

Basic dynamic load rating (C) - 161 kN

Basic static load rating (C0) - 315 kN

(Grease) Lubrication Speed - 6 000 r/min

(Oil) Lubrication Speed - 7 200 r/min

• Model Number: NN4921MB
• Inner Diameter：105mm Outer Diameter：135mm Width：40mm
• Type：Cylindrical Roller Bearings
• Update date：2025-12-15
• Application:supporting facilities,Traffic Fire Protection Equipment Security equipment,fruit and vegetable processing,internal combustion engine,enzyme,rehabilitation training equipment,non-ferrous metal alloy,Individual Wire,hydraulic connector,Medical equipment,Cylinder Micro
• Similar models:ISB NNU4921SPW33 ISO NNU4921KV NSK NNU4921MBKR NTN NNU4921C1NAP4 ISO NNU4921V NACHI NNU4921 NSK RS-4921E4 NTN NN4921K NTN NN4921C1NAP4 ISO NNU4921
• BEARING POWER International Trading Co.,Ltd. specialize in NN4921MB products，there is large inventory of NSK NN4921MB . We has been built up long-term cooperation with NSK company, could make a bulk order of the NN4921MB Which NSK NN4921MB 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
  21317-E1-K + AHX317	80	180	41	FAG	Spherical Roller Bearings
  24124EAW33	120,000	200,000	80,000	SNR	Thrust Roller Bearings
  6052	260	400	65	KOYO	Deep Groove Ball Bearings
  BK1412	14	20	12	CX	Cylindrical Roller Bearings
  F-803196.07.KL	32	80	21	FAG	Deep Groove Ball Bearings
  FY 3/4 TF	19.05		31	SKF	Bearing Units
  QJ 1026	130	200	33	NSK	Angular Contact Ball Bearings
  MF85ZZ	5	8	2,5	FBJ	Deep Groove Ball Bearings
  NP 421	105	220.5		NACHI	Cylindrical Roller Bearings
  NU1020	100	150	24	NTN	Cylindrical Roller Bearings
  SDE12AJ	12	22	22,9	KOYO	Linear Bearings
  SI20C	20		16	AST	Plain Bearings
  VKBA 624				SKF	Wheel Bearings
  5410	50	130	58.74	FAF	DOUBLE ROW ANGULAR CONTACT BALL BEARINGS
  RM20L	3.5000	8.1250	1.7500	FAG	CYLINDRICAL ROLLER BEARINGS
  R-8-ST	.5000	1.1250	.2500	MRC	DEEP GROOVE BALL BEARINGS
  51296				RHP	THRUST BALL BEARINGS
  W-230	150	270	4.7500	RBC	CYLINDRICAL ROLLER BEARINGS
  6018MP/5	90	140	24	CONSOLIDATED	DEEP GROOVE BALL BEARINGS
  AT-753				CONSOLIDATED	THRUST ROLLER BEARING WITH SPHERICAL SEATING RING