Bearings, units and housings -- Super-precision bearings -- Cylindrical roller bearings -- Cylindrical roller bearings, double row, super-precision -- SKF NNU 4921 BK/SPW33

NNU 4921 BK/SPW33

Dimensions

d		105	mm
D		145	mm
B		40	mm
D₁		130.8	mm
F		118	mm
b		5.5	mm
K		3	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
s	max.	1.1	mm

Tapered bore, taper 1:12

Abutment dimensions

d_a	min.	111	mm
d_a	max.	116	mm
D_a	max.	138.5	mm
d_n		119	mm

Calculation data

Basic dynamic load rating	C	130	kN
Basic static load rating	C₀	260	kN
Fatigue load limit	P_u	30	kN
Attainable speed for grease lubrication		5300	r/min
Attainable speed for oil-air lubrication		6000	r/min
Reference grease quantity	G_ref	15	cm³
Static radial stiffness (guideline value)		3040	N/µm

Mass

Mass bearing

Model Number: NNU 4921 BK/SPW33
Inner Diameter：105mm Outer Diameter：145mm Width：40mm
Reference speed:- Limiting speed:-
Type：Bearings, units and housings Super-precision bearings Cylindrical roller bearings Cylindrical roller bearings, double row, super-precision
Details： Cylindrical roller bearings, double row, super-precision
Update date：2025-12-09
Application:tire industry,education model Instruments,sewage pump,Hairbrush device,pneumatic Pump,machining,hydraulic cylinder,Industry,tooth filling,suction nozzle,Medium and large motor
Similar models:NNU 4921 B/SPW33 NNU 4921 BK/SPW33 GB 4921
BEARING POWER International Trading Co.,Ltd. specialize in NNU4921BK/SPW33 products，there is large inventory of SKF NNU 4921 BK/SPW33 Cylindrical roller bearings, double row, super-precision. 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	Type
1100112	279.4	311.15	15.88	Seals
36x54x8 CRW1 V	36	54	8	Seals
6232 M	160	290	48	Bearings, units and housings
6414	70	180	42	Bearings, units and housings
AHX 3120	95	100	64	Bearings, units and housings
BD-C 3136 K-H 3136 L	160	300	96	Bearings, units and housings
FSAF 1516 x 2.3/4 TLC	69.85	-	-	Bearings, units and housings
FSAF 22316 TLC	80	-	-	Bearings, units and housings
IR 95x105x36	95	105	36	Bearings, units and housings
JM 718149 A/110	90	145	35	Bearings, units and housings
PCZ 2228 M	34.925	38.89375	44.45	Bearings, units and housings
PL 68	-	-	31.75	Bearings, units and housings

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Hot number： 22213 EK 2600332 51184 F 6320-2RS1 575/572 6016 N BT4B 334056 B/HA1 H 2313 E NNC 4844 CV NNCL 4880 CV OH 3984 HE PF 35 TF SAF 22516 x 2.3/4 T YET 205-100 Z 205