Piston & Bearings

Piston Assembly / Rings / Pins

Pistons, Piston Rings and Piston Pins — the core components of the piston assembly. Pistons are mainly made of Aluminium; Cast Iron Pistons are also made for applications such as air brake compressors.

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Pistons — Gravity Die Casting

Molten Aluminium alloy is poured into a tabletop steel die with a runner and riser. Alloys typically contain Silicon, Copper, Nickel and Magnesium. After casting, pistons are furnace heat treated and precision machined using centre-to-centre principles. Most pistons are cam-turned to achieve ovality, emphasising wear resistance and thermal conductivity.

Piston Rings

Cast Iron Rings are individually cast and cam-turned to accurate size. SG Iron Rings are centrifugally barrel casted and heat treated. Chrome-plated variants feature 250 microns plating with barrel honing and grinding for enhanced sealing.

Piston Pins / Gudgeon Pins

Made from 16 MnCr3 or 20 MnCr5 and case-hardened to approximately 60 HRC. Available in Free Floating, Thumb Push or Tight Fit configurations.

Key Features

Aluminium alloy pistons (Silicon, Copper, Nickel, Magnesium)

Cast Iron pistons for air brake compressors

Normal / Alfin (Ring Carrier), Shims, Tin Plated, Black Graphite Coated and Top Anodized types

Cam-turned to achieve ovality

Chrome-plated rings at 250 microns

SG Iron rings — centrifugally barrel casted

Piston Pins case-hardened to ~60 HRC

Free Floating, Thumb Push or Tight Fit pin configurations

Related products

Wet Type

Cylinder Liners (Wet Type)

Cylinder Liner with Piston Assembly forms the heart of the engine and is a very critical component for the running and performance of the engine. GTC brand liners are centrifugally cast from controlled cast iron alloy and precision honed to exacting R.A. values.

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Rotating

Connecting Rods

Connecting rods mainly made from Steel Forging (NQT processed), and also Aluminium Pressure Die Cast for air brake compressors. Accurate size and weight controlled for precise, balanced assemblies.

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Friction

Engine Bearings & Bushes

Engine Bearings & Bushes are the most integral parts of engines. Thin-walled bearings use bi-metal strips; thick-walled bearings use steel or Gun Metal backing with centrifugal casting. Available in Tin Base, Copper Lead and Aluminium alloy linings.

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