Professional China Excavator Undercarriage Parts - E330 Carrier Roller Manufacturers 6Y5323 – Pingtai

PINGTAI factory produces undercarriage replacement parts and complete undercarriages for Caterpillar E330 series excavators. All of production with the warranty 6 months to 2 years. In addition to undercarriage parts, we also supply wear parts such as bucket , bucket teeth ,pin ,bushing and bolt nut etc… The production process of upper roller is as following :

The heat treatment depth is uniform hardening so that the supplier wear life equals the link wear life.

The material of the carrier roller body is forged by 40Mn2. and the surface heat treatment HRC 48-55 depth up to 5-8mm. Precision CNC machine machining size is more accurate

The center shaft of the carrier roller material is 42CrMo and forged .The hardness of surface heat treatment can reach 48-55HRC More wear-resisting . Core hardness of HRC 28 or above is not easy to fracture. Tempering 180 degrees before finishing. The surface of the center shaft of the carrier roller is polished by CNC machine tool to make the shaft smoother.

High sealing aprons are used inside the carrier roller to prevent dirt, sand and water from damaging it.

The carrier roller using friction welding technology welding quality is good and stable, and environmental protection, no pollution. Welding process does not produce smoke or harmful gas, no splash, no lone light and spark, no radiation. Known as the green welding technology of the future.

The carrier roller is above the track frame and its function is to raise the track so that it has a certain tension, and the chain is kept in a certain position and at a height high enough for debris to fall off the chain,  it can be kept relatively clean. The upper roller drives the sprocket in engagement with the track chain and moves the machine by pulling the chain over the sprocket.   Double flanged roller is suitable for 3 tons to 50 tons of excavators. If the roller fails, the track link will not work normally. It is very important to choose qualified high-end quality roller

330B 330B E330B L 330B LN 330C 330CL 330D