INA 908, 5911060 Single-Direction Metric Ball Thrust Bearing (40mm x 64mm x18mm)

This is an INA 908 single direction thrust ball bearing, INA part number 5911060, in its original INA box. INA is a Schaeffler Group brand. The box label is marked Made in USA.

A single direction thrust ball bearing carries axial load in one direction only. It is built from a shaft washer, a housing washer and a ball and cage assembly running in grooved raceways, and the parts separate for mounting. It does not support radial load, so it is typically paired with a radial bearing on the same shaft. The 908 has a 40 mm bore, 64 mm outside diameter and 18 mm height, with a dynamic axial load rating of 38,000 N, a static axial load rating of 78,000 N and a limiting speed of 3,800 rpm.

Thrust bearings of this type are found in rotary tables, vertical shafts, screw jacks, gearboxes, swivels and machine tool spindles. Maintenance mechanics and repair shops use the 908 as a direct replacement where the equipment calls for this bearing number.

Available from King Surplus inventory in Del Rio, Texas.

• Designation: INA 908
• INA part number (box label): 5911060
• Type: Single direction axial deep groove (thrust) ball bearing, grooved raceways, separable
• Bore diameter (d): 40 mm (1.575 in)
• Outside diameter (D): 64 mm (2.520 in)
• Height (T): 18 mm (0.709 in)
• Dynamic axial load rating (Ca): 38,000 N (8,540 lbf)
• Static axial load rating (C0a): 78,000 N (17,500 lbf)
• Limiting speed: 3,800 rpm
• Bearing weight: 0.211 kg (0.465 lb) per bearingsize.info catalog
• Country of origin (box label): USA
• Spec Basis: INA box label (nameplate photo); https://bearingsize.info/catalogue-online/thrust-ball-bearings/bearing-908-ina-obj31016.html; https://usarollerchain.com/products/2783-908-bearing; https://en.tradebearings.com/908-17827.html