Fafnir2MM9108WICRDUHAngular Contact Ball Bearing – Straight Bore, 40 mm ID, 68 mm OD, 15 mm Width, Open, 15° Contact Angle, Heavy Preload.

Product Description

What this part is:

Fafnir 2MM9108WI-DUH matched duplex pair of super-precision angular contact spindle ball bearings, built by The Timken Company. Two bearings ground as a set, each 40 x 68 x 15 mm, 30 mm total width for the pair, 15° contact angle, ISO P4 (ABEC 7), heavy preload, phenolic cage, open.

Decoding the designation:

2MM — Fafnir 15° contact angle super-precision series.

9108 — 9100WI series, the ISO 7008 envelope.

WI — low shoulder on both rings.

CR — phenolic cage.

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

H — heavy preload.

Specifications:

Bore Diameter: 40 mm. Outside Diameter: 68 mm. Bearing Width: 15 mm per bearing. Total Width: 30 mm for the pair. Contact Angle: 15°. Precision Class: ABEC 7 / P4. Preload: Heavy. Cage Type: CR – Phenolic Outer Land Riding Cage. Cage Material: Phenolic. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Number Of Rows: 2. Arrangement / Configuration: Matched duplex pair. Design Units: Metric. Series: 9100WI. Dynamic Radial Load Rating (C1): 21,900 N (4,920 lbf) per bearing. C1 ISO Dynamic Radial Rating per row: 19,900 N (4,470 lbf). Static Radial Load Rating (C0): 14,900 N (3,360 lbf) per bearing. Limiting Speed: 19,900 rpm grease; 39,800 rpm oil. Unit Quantity: 2 Pcs. World part number: 7008C-T-P4S-DUH. Country of Origin: United States.

Dimensions and mounting:

Max Shaft Fillet Radius: 1 mm (0.039 in). Outer Ring To Clear Radius: 1 mm (0.039 in). Shaft Backing Shoulder Diameter: 45.7 mm (1.800 in). Housing Backing Shoulder Diameter: 62.2 mm (2.450 in).

Compatibility and replacement:

Related designations: Timken 7008C-T-P4S-DUH (world part number, same part), SKF 7008 CDGC/P4A, FAG B7008-C-T-P4S-UL (light preload), NSK 7008CTYNDUHP4 (class P4). Also written 2MM9108WIDUH, 2MM9108WI-DUH, 2MM 9108 WI CR DUH and 7008C.

Frequently asked questions:

What are the dimensions of the Fafnir 2MM9108WI-DUH?

Bore 40 mm, outside diameter 68 mm, width 15 mm per bearing, 30 mm total width for the pair.

What contact angle and preload does it have?

15° contact angle and heavy preload.

What are its load ratings and limiting speeds?

C1 dynamic radial rating 21,900 N per bearing, C0 static radial rating 14,900 N per bearing, limiting speed 19,900 rpm grease and 39,800 rpm oil.