Bunting Bearings EP040604 Bronze Sleeve Bearing 1/4 in Bore 1/4 in Length PK3

Bronze Sleeve Bearing for Light Loads

The Bunting Bearings EP040604 is a sintered bronze sleeve bearing with a 1/4 inch bore and 1/4 inch length. It is supplied as a pack of three for maintenance or small-batch assembly. The self-lubricating design uses embedded SAE 30 oil to reduce friction without external lubrication lines. This suits low-speed shafts in clean, dry environments.

Temperature and Fit Constraints

The bearing operates between 10 and 220 degrees Fahrenheit, limiting use in extreme cold or high-heat machinery. The inch-based dimensions and +/- 0.005 inch length tolerance require matching shaft and housing tolerances for proper clearance. The non-flanged, plain body provides no axial location, so external retention is necessary. California Proposition 65 warnings apply to the material content.

Capacity for Intermittent Motion

The sintered bronze structure handles light radial loads and intermittent rotation where continuous oil supply is impractical. Embedded lubricant gives a useful service life in vacuum or sealed housings without relubrication. The small 1/4 inch length offers limited load distribution area, so it is not suited for heavy continuous duty or high-speed applications. Three pieces per pack support spares or multi-point repairs.