Tristar DRS-0508-4 Sleeve Bearing Rulon Lr 5/16 Id

Product Description

The TRISTAR DRS-0508-4 is a sleeve bearing manufactured from Rulon LR, a self-lubricating PTFE-composite material suited for low-friction, low-maintenance bearing applications. It features a 5/16-inch inside diameter, a 1/2-inch outside diameter, and a 1/2-inch overall length. This compact plain bearing is designed to support rotating or sliding shafts in light- to medium-duty assemblies. HVAC technicians, equipment repair shops, and mechanical tradespeople install sleeve bearings like this one as direct OEM-style replacements in fan assemblies, blower wheels, damper linkages, and similar rotating components where ball bearings are not specified.

The DRS-0508-4 is suitable for residential and light commercial HVAC equipment, as well as general mechanical assemblies that require a self-lubricating plain bearing in a small-format size. Its Rulon LR construction makes it appropriate for dry-running applications where oil or grease lubrication is impractical or undesirable. Typical installation scenarios include replacing worn sleeve bearings in blower motor housings, fan shaft supports, and actuator pivot points during routine equipment servicing or repair.

Key Features

• Rulon LR PTFE-composite material provides self-lubrication and reduced friction without external grease or oil
• 5/16-inch inside diameter accommodates common small-shaft sizes in HVAC and light mechanical assemblies
• 1/2-inch outside diameter and 1/2-inch overall length for compact, space-constrained installations
• Plain sleeve design allows direct drop-in replacement in housings sized for standard sleeve bearings
• Sold individually, allowing single-unit replacement without excess inventory

Compatibility

Designed as an OEM-style replacement sleeve bearing for mechanical assemblies requiring a 5/16-inch ID, 1/2-inch OD, 1/2-inch OAL plain bearing in Rulon LR material.

Installation Notes

Sleeve bearings of this type are typically installed by HVAC technicians or mechanical repair technicians during equipment overhaul or component replacement. Always de-energize and lock out the equipment before disassembling any rotating assembly. Press-fit installation is standard; ensure the housing bore is clean and within specification before seating the bearing. Consult the original equipment documentation for housing tolerances and shaft clearance requirements.