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Fafnir3MMV9115WIDULSuper-Precision Angular Contact Ball Bearing Matched Pair 75 x 115 x 20 mm, 25 Degree Contact Angle, ABEC 7, Light Preload, Phenolic Cage, Set of 2

Condition: New

Availability:

3 in stock

Super-precision angular contact ball bearing pair, 75 mm bore, 115 mm outside diameter, 20 mm width per ring. 25 degree contact angle, ABEC 7, light preload, phenolic cage. Sold as a matched duplex set of 2 Pcs.

List Price

$279.36

3 in stock

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Specifications

Key Specifications

MFR / BrandFafnir
MPN3MMV9115WIDUL
Model3MMV9115WI-CR-DUL
Bearing TypeAngular Contact Ball Bearing, Open
ID75 mm
OD115 mm
Width20 mm

Technical Specifications

MaterialChrome Steel
Series9100
Base Number3MMV9115WI
Industry Termssuper precision spindle bearing; machine tool bearing; matched pair angular contact; duplex bearing set; phenolic cage bearing
Common MisspellingsFafnier; Faffnir; 3MMV9115W1; 3MVV9115WI; 3MMV9115WI DUI
Application TypesMachine tool spindles; grinding spindles; high-speed milling heads; precision rotary tables
Bore Shaft Size75 mm (2.9528 in)
Mpn Variants3MMV9115WI-DUL; 3MMV9115WIDUL; 3MMV9115WI-CR-DUL; 3MMV9115WICRDUL; 3MMV 9115 WI CR DUL
Manufacturer StatusFafnir is a Timken brand
Rolling ElementsBall
Number Of Rows1 per ring, 2 rows in the pair
Bore TypeStraight
Snap Ring IncludedWithout Snap Ring
Harmonization Code8482.10.50.28
Part Number3MMV9115WI-CR-DUL
Seller Part Number: B-P5#YHWUHS

Product Description

What this part is

A Fafnir 3MMV9115WI-CR-DUL super-precision angular contact ball bearing set, two rings ground as a matched duplex pair. Steel rings, steel balls, phenolic cage, open on both faces.

Decoding the designation

3MM — 25° contact angle.
9115 — leading 9 marks the ISO 70 light series; bore code 15 gives a 75 mm bore. ISO equivalent 7015AC.
WI — Fafnir ground super-precision spindle series.
CR — phenolic outer-land-riding cage.
DUL — duplex, universally ground, light preload.

What these specs mean in practice

A 25° contact angle carries more thrust and less speed than a 15° ring on the same 75 x 115 x 20 mm envelope. An outer-land-riding phenolic cage is guided by the outer ring rather than by the balls, which cuts cage wear and slinging at high speed and keeps the assembly light. Light preload trades axial stiffness for a lower running temperature. The rings are flush-ground as a pair, so they seat back-to-back, face-to-face or in tandem and reach the marked preload with no shim stack.

Published specifications

Bore: 75 mm (2.9528 in)
Outside diameter: 115 mm (4.5276 in)
Width per ring: 20 mm (0.7874 in)
Total width of the pair: 40 mm (1.5748 in)
Contact angle: 25°
Precision class: ABEC 7 (P4S)
Preload: light
Cage: phenolic, outer-land-riding
Rolling elements: steel balls, single row per ring
Closure: open both faces

Quantity and configuration

2 Pcs, supplied as one matched duplex pair.

Interchange guidance

ISO base number 7015, angle-designated 7015AC. Searchable forms are 3MMV9115WI-DUL, 3MMV9115WIDUL, 3MMV9115WI-CR-DUL and 3MMV 9115 WI CR DUL. A 2MMV9115WI ring is the 15° version of the same envelope and is a related size, not an interchange; DUM and DUH are the medium and heavy preload grades, and SU singles are a different arrangement, so all three are related sizes.

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