Dayton Lamina S1250-31G Shoulder Bushing 1-1/4 in Id

Product Description

The DAYTON LAMINA S1250-31G is a self-lubricating aluminum bronze shoulder bushing designed for die mold and tooling applications. It features a press-fit installation method and a friction bushing design that requires no external lubrication during normal operation. The inside diameter measures 1.25 inches, with a body outside diameter of 1.6255 inches and a collar outside diameter of 1.8 inches. The usable length above the collar is 3-11/16 inches. This bushing is installed by toolmakers, die setters, and precision machining professionals working with stamping dies, mold bases, and similar tooling assemblies.

This shoulder bushing is suited for use in die mold bases where precise bore alignment and long service life are required. The aluminum bronze construction provides good wear resistance, corrosion resistance, and inherent lubricity, making it appropriate for continuous-cycle press tooling environments. It is typically used in leader pin and guide post systems within progressive dies, compound dies, and injection mold bases in both production and short-run tooling setups.

Key Features

• Self-lubricating aluminum bronze material eliminates the need for periodic greasing in standard tooling cycles
• Press-fit attachment method ensures secure, repeatable seating in the die set bore
• Shoulder collar design provides a positive axial stop during installation
• Inside diameter of 1.25 inches with body OD of 1.6255 inches for consistent bore-to-body clearance
• Collar outside diameter of 1.8 inches and collar height of 3/16 inch for reliable flange registration
• 3-11/16 inch length above collar accommodates standard die set shut heights

Compatibility

Designed as an OEM-style replacement or direct-fit bushing for die mold base assemblies requiring a 1-1/4 inch inside diameter shoulder bushing with a press-fit body and aluminum bronze construction.

Installation Notes

Installation is typically performed by a toolmaker or die technician using an arbor press or hydraulic press to achieve proper press-fit seating in the die set plate. The mating bore and bushing OD should be measured and verified for correct interference fit before pressing. Ensure the die set is fully de-energized and the press ram is blocked before performing any bushing replacement. Do not drive the bushing in with impact tools, as this can distort the bore or damage the collar.