Fafnir2MM9130WIDULSuper-Precision Angular Contact Ball Bearing 150x225x35 mm 15° Light Preload Phenolic Cage ABEC 7/9

Product Description

What this part is

A Fafnir 2MM9130WI-CR-SUL super-precision single-row angular contact ball bearing. Bore 150 mm, outside diameter 225 mm, width 35 mm. Open on both faces, universally ground.

Decoding the designation

2MM — 15° contact angle in the Fafnir scheme; the MM prefix carries the P4S build9130 — leading 9 marks the ISO 70 light series, 150 mm bore, so the ISO equivalent is 7030-CWI — super-precision spindle bearing seriesCR — phenolic outer-land-riding cageSU — single universally groundL — light preload

What these specs mean in practice

At 150 mm bore the 70 light section holds the outside diameter to 225 mm, which keeps surface speed at the outer raceway and the ball set mass down for a large spindle. The outer-land-riding phenolic cage stays stable at the resulting cage speeds. The 15° angle favours speed and radial stiffness over thrust.

Published specifications

Bore: 150 mmOutside diameter: 225 mmWidth: 35 mmContact angle: 15°Precision: P4S — ABEC 7 / ABEC 9Preload: lightCage: phenolic, outer-land ridingRows: 1Closure: open

Quantity and configuration

Single universally ground bearing. 1 Pc per sale unit.

Fitting notes

Thrust is carried in one direction only, so the bearing runs against an opposing bearing or a housing shoulder. The wide outer-ring land is the thrust face and its orientation sets the arrangement.

Interchange guidance

Same-spec equivalents at 15°, super precision, light preload: RHP 7030CTSULP4, FAG B7030C.T.P4S.UL, SKF 7030 CD/P4A, NSK 7030CTRSULP4. The 25° 3MM9130WI shares the envelope at a different contact angle and is a related size rather than an interchange.