B=(Segment Cage Type, Code M)=Present Standard Design With Brass Cage Of Double Pronged Type. K=Tapered Bore, Taper 1:12. SP=Special Precision Class For Machine Tool Bearings; Dimensional Accuracy Approximately To P5, Running Accuracy Approximately T
Inner (d) Inch
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Outer (D) Inch
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Width (B) Inch
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Description from Medias
Manufacturer Part Number (MPN)
NNU4952BK/SPW33
Bore
K - 1:12 Tapered Bore (Standard for Most Types)
Seal
No Seal
Cage Type
M - Brass Cage
External Modification
No External Modification
Radial Internal Play
Cn Normal Internal
Precision
SP - Precision Higher than P4S
Heat Stabilization
Special Treatment
No Heat Stabilization - Temperatures up to 120°C