Fafnir2MM213WNCRDULAngular Contact Ball Bearing – 65 mm ID, 120 mm OD, 23 mm Width, 15° Contact Angle, Light Preload Duplex Pair, ABEC 7/9

Product Description

What this part is

Fafnir 2MM213WN-CR-DUL super-precision angular contact ball bearing, 200 spindle series, 65 x 120 x 23 mm. Bore Diameter: 65 mm. Outside Diameter: 120 mm. Overall Width: 23 mm per bearing. Contact Angle: 15°. Precision Class: ABEC 7/9 / P4S. Cage Type: Outer-ring land riding. Cage Material: Phenolic. Rolling Elements: Ball. Bearing Material: Chrome steel. Bore Type: Straight. Closure Type: Open. Number Of Rows: 1 per bearing.

Decoding the designation

2 — 15° contact angle.

MM — Fafnir super-precision spindle execution, ISO P4S tolerance class.

213 — 200 series, bore code 13, giving a 65 mm bore.

WN — the WN ring shoulder form.

CR — phenolic outer land riding cage.

DUL — duplex pair, light preload.

What these specs mean in practice

Lubricant: grease or oil.

A 15° contact angle favours rotational speed over thrust capacity, which is why this angle dominates high-speed machine tool spindle positions. Light preload keeps running heat and friction torque down while still removing internal play, and it is the grade chosen where spindle speed matters more than stiffness. Preload and internal clearance are mutually exclusive, so Internal Clearance: N/A.

The cage is guided on the outer ring land rather than on the balls, which steadies it at high speed. Phenolic absorbs and releases lubricant, suiting continuous spindle duty.

Quantity and configuration

Unit Quantity: 2 Pcs. Mounting Arrangement: duplex pair, light preload. The two bearings are ground as a matched set and mount together on one shaft seat.

Interchange guidance

The 2MM213WI-CR-DUL is the WI shoulder form on the same 65 x 120 x 23 mm envelope at the same angle, tolerance class and preload. Searchable forms of this number include 2MM213WNCRDUL, 2MM213WN-CR-DUL, 2MM-213-WN-CR-DUL and 2 MM 213 WN CR DUL.