Compressor Blocks

Crank case
The crank case is made of high grade cast iron and houses the crankshaft assembly. It acts as the sump for the lubricating oil and is provide with an oil level indicator , a drain plug and a breather. The breather maintains a partial vacuum inside the crank case to facilitate proper
lubrication.

Crankshaft and connecting rod assembly.
The crankshaft and connecting rod assembly is precision machined and dynamically balanced. Single row heavy duty ball bearings are provided at both the ends of the crankshaft assembly. Connecting rod big end is provided with cylindrical steel roller and small end is provided with phosphor bronze bush bearing. The crankwebs are forged out of carbon steel, case hardened and precision ground. The crankshaft assembly is provided with an oil splasher for lubricating all moving parts by splashing the oil in the crank case.

Pistons
The pistons fitted to the connecting rod are of automotive type and are of low expansion aluminium alloy. The pistons are provided with plain, stepped compression and slotted oil control rings. The rings are made of special quality close grained pearlitic cast iron and designed for controlling wear and oil consumption to great extent. The gudgeon pins are of chromium steel, case - hardened and precision ground.

Cylinder and Cylinder head.
The cylinders and cylinder heads have deep fins for effective cooling and are made of high grade cast iron to ensure high wear resistance.