Fafnir2MM210WI DUHSuper-Precision Angular Contact Ball Bearing Pair – 50 mm Bore, 90 mm OD, 20 mm Width, 15° Contact Angle, Heavy Preload, Open

Product Description

What this part is:

Fafnir 2MM210WI DUH super-precision angular contact ball bearing, supplied as a matched duplex pair (Unit Quantity: 2 Pcs). Bore 50 mm, outside diameter 90 mm, width 20 mm per bearing, 40 mm across the pair. Open on both faces, one row of balls per bearing, phenolic cage, 15° contact angle, heavy preload, ABEC 7 (ISO P4) precision.

Decoding the designation:

2MM — 15° contact angle; MM is the Fafnir P4 precision class.

210 — ISO 7210 envelope, 50 x 90 x 20 mm, 72 medium dimension series.

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

DU — duplex, universally ground pair.

H — heavy preload.

Specifications:

Bore Diameter: 50 mm. Outside Diameter: 90 mm. Overall Width: 20 mm per bearing. Total Width: 40 mm across the pair. Contact Angle: 15°. Number Of Rows: 1 per bearing. Preload: Heavy. Precision Class: ABEC 7 (ISO P4). Cage Material: Phenolic. Closure Type: Open. Bore Type: Straight. Series: 2MM200WI. Dynamic Load Rating: 11,000 lbf. Static Load Rating: 7,130 lbf. GTIN: 087796070547. Unit Quantity: 2 Pcs. Country of Origin: United States.

Dimensions and mounting:

Straight 50 mm bore, 90 mm outside diameter. Maximum fillet radius on the mating part: 1 mm. Universal grinding allows back-to-back, face-to-face or tandem arrangements; the preload is ground into the ring faces. Preloaded set, no radial internal clearance grade.

Compatibility and replacement:

The Fafnir 2MM210WI is the ISO 7210 15° spindle bearing family. Light and medium preload versions of the same 2MM210WI, and 25° versions such as the 3MM210WI, are related sizes with a different preload or contact angle.

Frequently asked questions:

What are the dimensions of the Fafnir 2MM210WI DUH?

Bore 50 mm, outside diameter 90 mm, width 20 mm per bearing, 40 mm across the pair.

What contact angle does the 2MM210WI DUH have?

15°. The 2MM prefix is the Fafnir 15° contact angle code.

What does DUH mean?

DU is a universally ground duplex pair and H is heavy preload.