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Fafnir2MM9134WIDULAngular Contact Ball Bearing — 170 mm Bore, 260 mm OD, 42 mm Width, 15° Contact Angle, ABEC 7 / P4, Phenolic Cage, Light Preload

Condition: New – Open box
Condition Note: Made In USA, New Old Stock

Availability:

2 in stock

Super-precision angular contact ball bearing, 170 x 260 x 42 mm, 15° contact angle, ABEC 7 / P4. Matched duplex pair, light preload, phenolic cage. ISO 7034.

List Price

$948.38

2 in stock

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Specifications

Key Specifications

MFR / BrandFafnir
MPN2MM9134WIDUL
Model2MM 9134 WI CR DUL / 7034 C T DUL P4
Bearing TypeAngular Contact Ball Bearing
ID170 mm
OD260 mm
Width42 mm

Technical Specifications

MaterialSteel
Base Number2MM9134WI
Industry TermsSuper-precision angular contact ball bearing; spindle bearing; matched duplex pair; machine tool bearing
Common Misspellings2MM9134WL-DUL; 2MM9134WI-DLU; 2MM 9134 WI DUL; Fafner 2MM9134WI; 2MM9134WICRDLU
Application TypesMachine tool spindles; grinding spindles; milling and turning spindles; precision gearboxes; high-speed rotary tables
Total Width84 mm
Overall Width42 mm
Mpn Variants2MM9134WI-DUL; 2MM9134WICRDUL; 2MM-9134-WI-DUL; 2MM9134WIDUL; 2MM 9134 WI CR DUL
Precision ClassABEC 7 / P4
Series9100WI
Rolling ElementsBall
Cage MaterialPhenolic
Number Of Rows1
Bore TypeStraight
Harmonization Code8482.10.50
Contact Angle15°
PreloadLight
Mounting ArrangementUniversal duplex (DB, DF or DT)

Cross-References

Cross Reference 1SKF 7034 CD/P4ADGA
Cross Reference 2FAG B7034-C-T-P4S-UL
Cross Reference 3NSK 7034CTRDULP4
Cross Reference 4NTN 7034CDB/GLP4
Cross Reference 5RHP 7034CTDULP4
Cross Reference 6Koyo 7034CDB
Cross Reference 7SNR 7034CVDUJ74
Cross Reference 8Timken 2MM9134WICRDUL
Seller Part Number: FJ2#12DNNH

Product Description

What this part is

Fafnir 2MM9134WI-CR-DUL super-precision angular contact ball bearing, supplied as a matched duplex set. Bore Diameter: 170 mm (6.693 in). Outside Diameter: 260 mm (10.236 in). Overall Width: 42 mm (1.654 in) per bearing. Total Width: 84 mm across the mounted pair. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Cage Material: Phenolic. Preload: Light. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. The ISO size equivalent is 7034. Country of Origin: United States.

Decoding the designation

2MM — 15° contact angle, ABEC 7 / ISO P4 tolerance class.

9134 — Fafnir’s number for the ISO 7034 envelope, 170 x 260 x 42 mm.

WI — low shoulder on both rings, the duplex grinding form.

CR — one-piece machined phenolic cage.

DUL — duplex, universally ground, light preload. Two single-row bearings ground as a matched set. Not a double-row bearing.

What these specs mean in practice

A 15° contact angle keeps the load path close to the radial plane. That is the angle used on machine tool spindles running at speed under a predominantly radial cutting load.

Phenolic is a light, self-lubricating cage material and runs quiet at spindle speeds. It is the standard cage across the Fafnir 9100WI super-precision range.

ABEC 7 / P4 fixes bore, outside diameter, width and running accuracy to ISO P4 tolerances. At a 170 mm bore this is one of the larger sizes in the 9100WI range.

Quantity and configuration

Unit Quantity: 2 Pcs. The two bearings are a factory-matched duplex set. Universal grinding lets the pair stack back-to-back (DB), face-to-face (DF) or in tandem (DT), and the ground ring faces carry the light preload. The set runs preload-set and carries no internal clearance code.

Mounting data

Bore Diameter: 170 mm. Outside Diameter: 260 mm. Overall Width: 42 mm per bearing, 84 mm for the pair stacked. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1 per bearing. Harmonization Code: 8482.10.50.

Interchange guidance

Same envelope, 15° contact angle and super-precision class: SKF 7034 CD/P4ADGA, FAG B7034-C-T-P4S-UL, NSK 7034CTRDULP4, NTN 7034CDB/GLP4, RHP 7034CTDULP4, Koyo 7034CDB, SNR 7034CVDUJ74. The current Timken catalogue designation is 2MM9134WICRDUL.

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