Our product range includes around 10 various plungers used in pressure regulators for diesel engines.

Typical sizes currently purchased by our customers are from 1¡¨ to 1.75¡¨ diameters (25mm to 45mm). These plungers are made from case carburising steel, which is machined on CNC machines, followed by hardening and tempering. This is followed by precision grinding to sizes and roundness parameters within 5 microns, after which the plungers are lapped to achieve surface finishes within 16 ƒÝRa in inches (0.04 ƒÝRa in mm).

A strict first piece and in-process inspection system is in place to minimize defects. These plungers are then deburred in a special vibrofinishing machine to get rid of any residual micro burrs that may have remained. Each component is then inspected visually for missing operations, damages or other non-conformances. Pneumatic pressure cleaning is followed by dipping in rust preventive oil. Sampling inspection is carried out before packaging in damage proof corrugated cartons. The plungers are thus ready for dispatch.