Bore
K - 1:12 Tapered Bore (Standard for Most Types)
Seal
No Seal
Cage Type
M - Brass Cage
External Modification
W33
Radial Internal Play
C2 Internal Play (Less than Cn)
Precision
SP - Precision Higher than P4S
Heat Stabilization
No Heat Stabilization - Temperatures up to 120 °C
Data from Schaeffler (medias)
Width (b) mm
50
Basic static load rating, radial (C 0r)
400000
Fatigue load limit, radial (C ur)
46000
Limiting speed for grease lubrication (n G Grease)
4250
Limiting speed for oil lubrication (n G Oil)
5000
Suffix description
SLubrication Groove And Three Holes In Bearing Outer Ring
KTapered Bore, Taper 1:12
MSolid Brass Cage, Roller Guided
SPSpecial Precision Class For Machine Tool Bearings: Dimensional Accuracy Approximately To P5, Running Accuracy Approximately To P4
C2Bearing Internal Clearance Smaller Than Normal
Product description
The NNU4928-S-K-M-SP-C2 FAG is a double-row precision cylindrical roller bearing. This bearing has a particularly high radial load capacity and high running accuracy. The design consists of a solid inner and outer ring with a double row of cylindrical rollers with a cage. The rolling elements are guided between flanges. This construction enables compact bearing arrangements with high radial stiffness and very high precision and load capacity. The outer ring is separable from the inner ring, facilitating (dis)assembly. Precision cylindrical roller bearings are often used, for example, in the main spindles of machine tools.
The NNU4928-S-K-M-SP-C2 FAG is equipped with a cage that prevents the cylindrical rollers from coming into contact with each other. This design allows for controlled movement of the rolling elements. There is less friction than in full-complement cylindrical roller bearings. As a result, higher rotational speeds are possible, and less heat is generated.
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