Timken2MM9116WIDULSuper-Precision Angular Contact Bearing Matched Pair 80x125x22 mm 15° Light Preload ABEC 7/9

Product Description

What this part is

A Timken Fafnir 2MM9116WI-DUL matched duplex pair of super-precision single-row angular contact ball bearings. Each bearing is 80 mm bore, 125 mm outside diameter, 22 mm wide, giving 44 mm total stack width. Open on both faces, universally ground as a set.

Decoding the designation

2MM — 15° contact angle in the Fafnir scheme; the MM prefix carries the P4S build9116 — leading 9 marks the ISO 70 light series, 80 mm bore, so the ISO equivalent is 7016-CWI — super-precision spindle bearing seriesDU — duplex, ground as a matched setL — light preload

What these specs mean in practice

P4S covers ABEC 7 dimensional tolerance with ABEC 9 running accuracy, which is the grade machine-tool spindles are built around. The 15° angle favours speed and radial stiffness over thrust. A duplex pair sets its own light preload once both rings are clamped, so no shim stack or spacer grinding is involved.

Published specifications

Bore: 80 mmOutside diameter: 125 mmWidth: 22 mm per bearing, 44 mm stackedContact angle: 15°Precision: P4S — ABEC 7 / ABEC 9Preload: light, factory matchedRows: 1 per bearingClosure: open

Quantity and configuration

Matched duplex pair. 2 Pcs per sale unit.

Fitting notes

Each bearing carries thrust in one direction; the pair mounted back-to-back or face-to-face covers both. The etched marks on the outer rings align to hold the matched offset as ground.

Interchange guidance

Same-spec matched pairs at 15°, super precision, light preload: RHP 7016CTDULP4, FAG B7016C.T.P4S.UL, SKF 7016 CD/P4ADGA, NSK 7016CTRDULP4, SNFA EX80-9CE1DUL. The 3MM9116WI at 25° shares the envelope and is a related size rather than an interchange.