Bearings, units and housings -- Super-precision bearings -- Cylindrical roller bearings -- Cylindrical roller bearings, double row, super-precision -- SKF NNU 4938 BK/SPW33

NNU 4938 BK/SPW33

Dimensions

d		190	mm
D		260	mm
B		69	mm
D₁		236	mm
F		212	mm
b		8.3	mm
K		3	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
s	max.	1.1	mm

Tapered bore, taper 1:12

Abutment dimensions

d_a	min.	200	mm
d_a	max.	209	mm
D_a	max.	250	mm
d_n		213	mm

Calculation data

Basic dynamic load rating	C	402	kN
Basic static load rating	C₀	880	kN
Fatigue load limit	P_u	90	kN
Attainable speed for grease lubrication		2800	r/min
Attainable speed for oil-air lubrication		3200	r/min
Reference grease quantity	G_ref	85	cm³
Static radial stiffness (guideline value)		5380	N/µm

Mass

Mass bearing

Model Number: NNU 4938 BK/SPW33
Inner Diameter：190mm Outer Diameter：260mm Width：69mm
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:sheet industry,Hydraulic Hose,Hair styling device,position switch,metal mold,defogging and degreasing,survey accessories,air purification,paper processing machine,roller lathe,Other machinery
Similar models:NNU 4938 BK/SPW33 NNCL 4938 CV NNU 4938 B/SPW33 GB 4938 NNCF 4938 CV
BEARING POWER International Trading Co.,Ltd. specialize in NNU4938BK/SPW33 products，there is large inventory of SKF NNU 4938 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 4938 BK/SPW33 Which SKF NNU4938BK/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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