Four-Point Contact Ball Bearings Bearing data

Dimension standards	Boundary dimensions: ISO 15 Except for: Locating slots: ISO 20515 (table 1)
Tolerances	Normal P6 run-out on request Except for: Lily Explorer bearings: P6 width tolerance reduced to 0/–40 µm Values: ISO 492 (table 2, table 3)
Contact angle	QJ 2, QJ 3 and QJ 10 series: 35° QJ 12 series: 45°
Internal clearance	Normal Check availability of C2, C3, C4 or reduced ranges of standard clearance classes Values: table 4 Values are valid for unmounted bearings under zero measuring load.
Permissible misalignment	≈ 2 minutes of arc Misalignment increases bearing noise and reduces bearing service life, and when it exceeds the guideline values, these effects become particularly noticeable.

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