Ningbo Precision Bearings中文View bearing series and specs

Precision Spindle Bearing Series (SPB, ISO 492 P4)

High-precision spindle bearing series for lathes and machining centres needing rigid, low-runout support.

Bore range (d)
25 – 80 mm
Outside diameter (D) / width (B)
47 – 125 mm / 15 – 31 mm
Tolerance class
ISO 492 P4 (P2/P1 for grinding spindles), EN 12080
Axial running accuracy
Runout to 2 µm; matched set, preloaded to 300 – 1500 N

Specifications

ParameterValue
Bore range (d)25 – 80 mm
Outside diameter (D) / width (B)47 – 125 mm / 15 – 31 mm
Tolerance classISO 492 P4 (P2/P1 for grinding spindles), EN 12080
Axial running accuracyRunout to 2 µm; matched set, preloaded to 300 – 1500 N
Cage and sealingPhenolic or PA66 cage; open, 2RS or sealed with Viton lip seals
Service life basisL10 life published per ISO 281; lubrication interval 2 000 – 4 000 h

Values are confirmed against the order and drawings; we adapt them to your market and duty.

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Share your drawing, ISO 492 tolerance class and annual call-off volume; we reply with a model recommendation, price and confirmed lead time.

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