Fafnir2MM9109WI DULAngular Contact Ball Bearing Duplex Pair – 45 mm ID, 75 mm OD, 16 mm Width, 15° Contact Angle, Light Preload, ABEC 7 P4

Product Description

What this part is:

Fafnir 2MM9109WI-DUL is a super-precision angular contact ball bearing built by Timken under the Fafnir brand and supplied as a universally ground duplex pair: two bearings, 15° contact angle, light preload, phenolic outer land riding cage. GTIN: 0087796072367.

Decoding the designation:

2MM — 15° contact angle on the Fafnir super-precision range, with the MM prefix carrying ISO P4 tolerancing (ABEC 7).

9109 — the 9100WI series, which maps to the ISO 70xx light series; this size is the ISO 7009.

WI — low shoulder on both rings, the high-speed spindle execution.

CR — phenolic outer land riding cage, guided on the outer ring land.

DU — duplex, two bearings ground for matched mounting as a set.

L — light preload.

Specifications:

Bore Diameter: 45 mm. Outside Diameter: 75 mm. Overall Width: 16 mm per bearing. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Cage Type: CR — phenolic outer land riding cage. Cage Material: Phenolic. Rolling Elements: Ball. Bearing Material: Chrome steel. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1 per bearing. Preload: Light. Item Weight: 0.48 kg (1.06 lb) for the pair. Dynamic Load Rating: 27,000 N per bearing. Static Load Rating: 19,300 N per bearing. Limiting Speed: 17,900 rpm grease; 35,800 rpm oil. Lubricant: grease or oil. Series: 9100WI. Base Number: 2MM9109WI. Unit Quantity: 2 Pcs.

Dimensions and mounting:

Shaft backing shoulder diameter: 51.3 mm (2.020 in). Housing backing shoulder diameter: 69.3 mm (2.730 in). Total width of the mounted pair: 32 mm. Mounting Arrangement: Duplex. The two bearings are universally ground and can be set back-to-back, face-to-face or in tandem at the light preload built into the grind.

Compatibility and replacement:

Cross-References: SKF 7009 CD/P4ADGA, FAG B7009-C-T-P4S-DUL (P4S vs P4), NSK 7009CTYNDULP4, NTN 7009UCDB/GNP4, RHP 7009CTDULP4, Koyo 7009C DB/GLP4, SNR 7009CVDUJ74. MPN Variants: 2MM9109WICRDUL, 2MM-9109-WI-CR-DUL, 2 MM 9109 WI DUL, 7009C-T-P4S-DUL, 109HCDUL.

Frequently asked questions:

What are the dimensions of the Fafnir 2MM9109WI-DUL?

Bore 45 mm, outside diameter 75 mm, width 16 mm per bearing, 32 mm across the mounted pair.

What do the 2MM, WI and DUL codes mean?

2MM is the 15° Fafnir super-precision range, WI is low shoulder on both rings, DUL is a universally ground duplex pair at light preload.

What are the load ratings and speed?

Dynamic load rating 27,000 N and static load rating 19,300 N per bearing; limiting speed 17,900 rpm on grease and 35,800 rpm on oil.