Injection moulded metal-to-rubber bonded items produced using top of the line equipment for high quality products.
Metal parts are machined to tight tolerances
In-house fatigue testing of all products to guarantee its working through entire life-cycle.
Arnitel Coil Spring Pads
Developed in collaboration with DSM Engineering, Netherlands using their extensive worldwide experience. It has the flexibility of rubber, the strength of engineering plastic and the processability of thermoplastic.
High technology TPE Coil Spring Pads were developed to replace conventional rubber dampers. Advantages over rubber dampers:
Higher load-bearing capacity
Better noise and shock absorption
PPI has supplied over a million Coil Spring pads to the Indian Railways
Axle Box Front Cover
Lightweight, vandal-proof, TPE Axle Box Front Covers to replace heavy aluminium covers.
It is used to seal the bearing and grease from the environment
TPE Pad for Secondary Suspension
Indigenously developed heavy-load TPE pads for secondary suspension.
Fatigue tested for life-cycle guarantee
It works as a part of the secondary suspension in Linke Hofmann Busch (LHB) coaches, where the primary load is taken by the helical spring and secondary load by the Pad for Secondary Suspension.
Polyacetal Protective Tube
The main function of the protective tube in the bogie is to protect the helical spring, which serves as the primary suspension.
Advantages of Polyacetal Protective Tube
Lower carbon-footprint when compared with engineering plastics
Huge reduction in weight the coach
Easy to handle at the workshops when they need to be replaced
Failures due to rust and oxidation are eliminated
HPPA Brake Gear Bushes
The main function of the brake gear bushes is to wear itself out slowly and as a result increase life of the metal parts it is mounted on.
At PPI, we worked with multiple engineering plastics to achieve the right abrasion resistance and lubrication. We finally achieved success with High Performance PolyAmide (HPPA), which met the specific requirements of wear & tear, crush strength and lubrication.
Vestibules/ Inter-car Gangways
Rubber used in these products meet stringent international fire standards for toxicity and smoke (NCD 1409 & UIC 845).