Fafnir2MMV9113HXDULAngular Contact Ball Bearing – 65 mm ID, 100 mm OD, 18 mm Width, Open, 15° Contact Angle, Phenolic Cage, Light Preload, High Speed HX, ABEC 7/9 P4S

Product Description

What this part is

Fafnir 2MMV9113HXCRDUL is a high-speed super-precision angular contact ball bearing supplied as a matched duplex pair. Bore Diameter: 65 mm. Outside Diameter: 100 mm. Overall Width: 18 mm. Outer Ring Width: 18 mm. Contact Angle: 15°. Bore Type: Straight. Closure Type: Open. Rolling Elements: Ball. Number Of Rows: 1 per bearing. Cage Material: Phenolic. Bearing Material: Bearing steel. Timken files it in the Fafnir High Speed Spindle Angular Contact Ball Bearings (9300HX, 9100HX) range, and the envelope is the ISO 7013 size.

Decoding the designation

2MMV — Timken Fafnir super-precision at a 15° contact angle, precision grade P4S. Timken’s Machine Tool Catalog sets P4S running accuracy at ABEC 9 / ISO P2 while holding the remaining bearing features at ABEC 7 / ISO P4.

9113 — the 9100 dimension series at bore code 13, which is ISO 70-series size 7013 at 65 x 100 x 18 mm.

HX — Timken’s high-speed spindle design, developed to raise spindle speed and radial stiffness together so a spindle head removes more material per pass while holding tool position.

CR — phenolic composition cage, Timken’s standard cage for super-precision spindle bearings.

DUL — duplex universal, light preload. Two bearings ground as a matched set with flush faces, so the pair mounts back to back, face to face or in tandem.

What these specs mean in practice

Limiting Speed: 16,400 rpm grease; 32,800 rpm oil. Lubricant: Grease or oil. Those figures are roughly half again what a standard WI bearing of the same 65 mm bore reaches, which is what the HX design buys.

Dynamic Load Rating: 23,500 N per bearing. Static Load Rating: 17,100 N per bearing. Both are Timken C1 and C0 values for a single bearing. The HX design trades load rating for speed against a WI bearing on the same envelope, so these figures sit below the WI equivalent by design.

Contact Angle: 15°. A shallow angle favours speed and radial stiffness over axial capacity, which is the trade a high-speed machine tool spindle wants.

Preload: Light. Light preload keeps running temperature and power draw down while still removing play from the spindle, and it is the usual pairing with a high-speed design.

Precision Class: ABEC 7/9 / P4S.

Mounting data

Bore Diameter: 65 mm. Outside Diameter: 100 mm. Overall Width: 18 mm. Shaft Backing Shoulder Diameter: 72.1 mm (2.840 in). Housing Backing Shoulder Diameter: 93.2 mm (3.670 in). Maximum housing fillet radius that the bearing corners will clear: 1 mm (0.039 in). Item Weight: 0.890 kg (1.96 lb) for the matched pair, 0.445 kg per bearing.

Quantity and configuration

Unit Quantity: 2 Pcs. Mounting Arrangement: Duplex universal (DU). Series: 2MM9100HX. Base Number: 2MMV9113HX. GTIN: 087796198197. Harmonization Code: 8482.10.50.

Interchange guidance

The ISO 7013 envelope at 15° and P4-class precision is made by every major super-precision manufacturer, and the alternatives are listed in the cross-reference fields. The HX high-speed design is Timken’s own; a standard-design 7013-C on the same envelope matches on fit and angle but carries a different speed ceiling and different load ratings.