Bearings, units and housings -- Super-precision bearings -- Cylindrical roller bearings -- Cylindrical roller bearings, double row, super-precision -- SKF NNU 4956 BK/SPW33

NNU 4956 BK/SPW33

Dimensions

d		280	mm
D		380	mm
B		100	mm
D₁		345.6	mm
F		312	mm
b		13.9	mm
K		3	mm
r_1,2	min.	2.1	mm
r_3,4	min.	1.1	mm
s	max.	4.5	mm

Tapered bore, taper 1:12

Abutment dimensions

d_a	min.	291	mm
d_a	max.	308	mm
D_a	max.	369	mm
d_n		313.5	mm

Calculation data

Basic dynamic load rating	C	765	kN
Basic static load rating	C₀	1800	kN
Fatigue load limit	P_u	170	kN
Attainable speed for grease lubrication		1900	r/min
Attainable speed for oil-air lubrication		2200	r/min
Reference grease quantity	G_ref	384	cm³
Static radial stiffness (guideline value)		7260	N/µm

Mass

Mass bearing

32.5

Model Number: NNU 4956 BK/SPW33
Inner Diameter：280mm Outer Diameter：380mm Width：100mm
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：2026-04-16
Application:Vacuum generator,Solenoid Valves,centrifugal pump,animal anatomy,rubber products machinery and equipment,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,bio-chemical,beverage production,water,woodworking machinery,Beauty and Body
Similar models:NNU 4956 B/SPW33 NNCL 4956 CV NNU 4956 BK/SPW33 GB 4956 NNCF 4956 CV
BEARING POWER International Trading Co.,Ltd. specialize in NNU4956BK/SPW33 products，there is large inventory of SKF NNU 4956 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 4956 BK/SPW33 Which SKF NNU4956BK/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
1100118	279.4	311.15	15.88	Seals
16362	41.275	69.85	6.35	Seals
30x52x7 HMSA10 V	30	52	7	Seals
313822	280	390	-	Bearings, units and housings
50195	127	190.5	12.7	Seals
AOH 3044 G	200	220	111	Bearings, units and housings
FBSA 208/DF	40	-	165	Bearings, units and housings
FY 2. TF/VA201	50.8	-	64.4	Bearings, units and housings
KMTA 12	24	-	60	Bearings, units and housings
NKIA 5914	70	100	40	Bearings, units and housings
SY 2.1/2 TF	63.5	-	-	Bearings, units and housings
W 623-2RS1	3	10	4	Bearings, units and housings

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