Fafnir2MM307WICRDULSuper-Precision Angular Contact Ball Bearing Pair – 35 mm Bore, 80 mm OD, 21 mm Width, 15°, Light Preload

Product Description

What this part is:

Fafnir 2MM307WICRDUL super-precision angular contact ball bearing, universally ground duplex pair. 35 mm bore, 80 mm outside diameter, 21 mm width per bearing, 42 mm total width as a pair. 15° contact angle, light preload, phenolic cage, ABEC 7/9 / P4S. Unit Quantity: 2 Pcs.

Decoding the designation:

2MM — Fafnir super-precision spindle range at a 15° contact angle, ground to ABEC 7/9 (P4S) tolerances.

307 — 300 heavy dimension series, bore code 07: 35 mm bore, 80 mm outside diameter.

WI — low shoulder on both rings.

CR — phenolic cage.

DUL — duplex pair, universally ground, light preload.

Specifications:

Bore Diameter: 35 mm. Outside Diameter: 80 mm. Overall Width: 21 mm per bearing. Total Width: 42 mm as a pair. Contact Angle: 15°. Preload: Light. Precision Class: ABEC 7/9 / P4S. Cage Material: Phenolic. Rolling Elements: Ball. Number Of Rows: 1 per bearing. Bore Type: Straight. Closure Type: Open. Dynamic Load Rating: 46,200 N per bearing. Static Load Rating: 25,600 N per bearing. Limiting Speed: 19,200 rpm grease; 38,400 rpm oil. Item Weight: 0.886 kg (1.96 lb) for the pair, 0.443 kg (0.98 lb) per bearing. Series: 300WI. Base Number: 2MM307WI. GTIN: 087796071506.

Dimensions and mounting:

Shaft Backing Shoulder Diameter: 43.2 mm. Housing Backing Shoulder Diameter: 72.1 mm. Maximum Housing Fillet Radius: 1.5 mm (0.059 in), the largest housing corner radius the bearing corners will clear. Arrangement: universally ground duplex pair; either face can be brought together for back-to-back, face-to-face or tandem mounting.

Compatibility and replacement:

Super-precision equivalents on the 7307 envelope at 15° with light preload: FAG B7307-C-T-P4S-UL, SKF 7307 CD/P4ADGA, NSK 7307CTRDULP4, NTN 7307UCG/GNP4, RHP 7307CTDULP4, Koyo 7307C P4 DUL. MRC 307R: 15° angle with a counterbored outer ring. A standard-tolerance 7307-C shares the envelope and angle only. CAD model and data sheet: available from Timken (cad.timken.com).

Frequently asked questions:

What are the size and contact angle of the Fafnir 2MM307WICRDUL?

35 mm bore, 80 mm outside diameter, 21 mm width per bearing, 15° contact angle.

What preload and precision class does it have?

Light preload (DUL), universally ground duplex pair, ABEC 7/9 / P4S precision.

What are the load ratings and speed limits?

Dynamic load rating 46,200 N and static load rating 25,600 N per bearing; limiting speed 19,200 rpm grease and 38,400 rpm oil.