d - 105 mm

D - 145 mm

B - 40 mm

C - 40 mm

b - 5,5 mm

r1 min. - 1,1 mm

r2 min. - 1,1 mm

r3 min. - 0,6 mm

r4 min. - 0,6 mm

D1 - 130,8 mm

F - 118 mm

K - 3 mm

da min. - 111 mm

da max - 116 mm

Da max. - 138,5 mm

db min - 121 mm

ra max. - 1 mm

S - 1,1 mm

dh - 119 mm

Weight - 2 Kg

Basic dynamic load rating (C) - 130 kN

Basic static load rating (C0) - 260 kN

(Grease) Lubrication Speed - 5 300 r/min

(Oil) Lubrication Speed - 6 000 r/min

Fatigue load limit (Pu) - 30

• Model Number:NNU 4921 BK/SPW33
• Inner Diameter：105mm Outer Diameter：145mm Width：40mm
• Type：Cylindrical Roller Bearings
• Update date：2026-01-02
• Application:sawing machine,metallurgical mold,Insect Capture,shoe-making machinery,Roller mill,car steering pin,car instrument,oral medical device,Cylinder Pneumatic Treatment Element,static control,diagnostic test paper
• Similar models:NSK NNU4921MBKR NTN NNU4921 NSK NN4921MBKR ISO NN4921 NTN NNU4921KC1NAP4 NSK NNU4921MB CX NN4921K NTN NNU4921K CX NNU4921KV CX NNU4921K
• BEARING POWER International Trading Co.,Ltd. specialize in NNU4921BK/SPW33 products，there is large inventory of SKF NNU 4921 BK/SPW33 . We has been built up long-term cooperation with SKF company, could make a bulk order of the NNU 4921 BK/SPW33 Which SKF NNU4921BK/SPW33 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
  07100-SA/07210XB	25,4	50,8	14,26	Timken	Tapered Roller Bearings
  1988/1922	28,575	57,15	19,845	ISO	Tapered Roller Bearings
  217W	85	150	28	Timken	Deep Groove Ball Bearings
  23268-B-K-MB	340	620	224	FAG	Spherical Roller Bearings
  309PP	45	100	25	Timken	Deep Groove Ball Bearings
  608-RS	8	22	7	ISB	Deep Groove Ball Bearings
  GE 180 HCR-2RS	180	290	155	ISO	Plain Bearings
  HCB7212-E-T-P4S	60	110	22	FAG	Angular Contact Ball Bearings
  JC35	120	225	170	KOYO	Cylindrical Roller Bearings
  MF-2210	22	28	10	NSK	Needle Roller Bearings
  MJH-10161	15,875	22,212	25,4	Timken	Needle Roller Bearings
  NA5916	80	110	40	KOYO	Needle Roller Bearings
  S71915 CD/HCP4A	105	75	16	SKF	Angular Contact Ball Bearings
  SCE56P	7,9502	12,7	9,525	AST	Needle Roller Bearings
  SCH1412	22,225	30,1752	19,05	AST	Needle Roller Bearings
  UCP320	100		108	KOYO	Bearing Units
  52316				SKF	THRUST BALL BEARINGS
  ML224	120	215	40	Rollway	CYLINDRICAL ROLLER BEARINGS
  QJ-205	25	52	15	CONSOLIDATED	ANGULAR CONTACT BALL BEARINGS WITH SPLIT INNER RACE
  TREL-2A	.1562		.2812	CONSOLIDATED	ROD ENDS