Fafnir2MM9130WI-CR-SULSuper-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 build
• 9130 — leading 9 marks the ISO 70 light series, 150 mm bore, so the ISO equivalent is 7030-C
• WI — super-precision spindle bearing series
• CR — phenolic outer-land-riding cage
• SU — single universally ground
• L — 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 mm
• Outside diameter: 225 mm
• Width: 35 mm
• Contact angle: 15°
• Precision: P4S — ABEC 7 / ABEC 9
• Preload: light
• Cage: phenolic, outer-land riding
• Rows: 1
• Closure: 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.