Lining screw for Bucyrus 61RB

The QR251 lining screw is a specialized fastener designed to attach friction linings to their metal supports within the brake or clutch assemblies of heavy machinery. This component ensures that the friction material remains firmly positioned against the braking or clutching surface, allowing for the effective transmission of force and control of mechanical motion. The screw is specified with a 3/8 inch unified fine thread and a length of 1 1/4 inches.

This fastener is compatible with the Bucyrus 61RB excavator, a cable-operated machine used in mining and earthmoving applications. By maintaining the correct tension and alignment of the friction linings, this screw supports the integrity of the braking and clutch systems during operation. Proper installation of these fasteners is necessary to prevent slippage or detachment of the friction material from the support plates.

In heavy equipment, lining screws serve to hold brake bands or clutch pads securely in place against the mechanical stresses encountered during operation. These fasteners must withstand the shear forces generated when the machine engages or disengages its drivetrain or braking mechanisms. Regular inspection of these screws ensures that the friction linings remain properly seated, which is a standard procedure for maintaining the operational safety of the machine.