Bearings, units and housings -- Super-precision bearings -- Cylindrical roller bearings -- Cylindrical roller bearings, double row, super-precision -- SKF NNU 4948 BK/SPW33

NNU 4948 BK/SPW33

Dimensions

d		240	mm
D		320	mm
B		80	mm
D₁		292.2	mm
F		265.3	mm
b		11.1	mm
K		3	mm
r_1,2	min.	2.1	mm
r_3,4	min.	1.1	mm
s	max.	3.7	mm

Tapered bore, taper 1:12

Abutment dimensions

d_a	min.	251	mm
d_a	max.	262	mm
D_a	max.	309	mm
d_n		267	mm

Calculation data

Basic dynamic load rating	C	528	kN
Basic static load rating	C₀	1220	kN
Fatigue load limit	P_u	118	kN
Attainable speed for grease lubrication		2200	r/min
Attainable speed for oil-air lubrication		2600	r/min
Reference grease quantity	G_ref	171	cm³
Static radial stiffness (guideline value)		6340	N/µm

Mass

Mass bearing

17.5

Model Number: NNU 4948 BK/SPW33
Inner Diameter：240mm Outer Diameter：320mm Width：80mm
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:quality inspection equipment,heating fans,Dental Equipment,hardware,machining,ECG,stirrer,hook,van,medical treatment,squeeze machine etc
Similar models:NNU 4948 B/SPW33 NNCF 4948 CV NNC 4948 CV NNU 4948 BK/SPW33 JLM 104948 AA/910 AA NNCL 4948 CV GB 4948
BEARING POWER International Trading Co.,Ltd. specialize in NNU4948BK/SPW33 products，there is large inventory of SKF NNU 4948 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 4948 BK/SPW33 Which SKF NNU4948BK/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.

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K 81244 M	220	300		Bearings, units and housings
HJ 409	45	71.8	13.5	Bearings, units and housings
NNU 41/950 M/W33	950	1500	545	Bearings, units and housings
NUKRE 62 A	-	62	28	Bearings, units and housings
OKTC 445	-	660	-
SAF 1615 x 2.3/8	60.325	-	-	Bearings, units and housings
W 6300	10	35	11	Bearings, units and housings
W 633-2RS1	3	13	5	Bearings, units and housings

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Hot number： 13865 2310 K 401705 51101 51102 V/HR22T2 60x110x10 HMS5 RG 75x115x12 CRW1 R BT4-8056 G/HA1 FY 2.7/16 TF/VA228 NUP 19/670 ECMA PWM 758570 SAF 22528 x 4.13/16 TLC SNL 3044 SNW 136x6.5/16 SYFWR 1.7/16 YZTHR