Carrier Roller for Komatsu PC300-7

As a factory specializing in undercarriage components, we produce and export Carrier Roller for Komatsu PC300-7  for long-hour working excavators used in quarry, mining, and earthmoving projects.

This carrier roller is installed on the upper part of the track frame to support the track chain weight and maintain proper track alignment during operation. In real working conditions, especially on PC300-7 machines operating on rocky or muddy ground, the carrier roller directly affects track stability and service life.

We manufacture this part using forged steel shells and precision machining. Each Carrier Roller for Komatsu PC300-7  goes through heat treatment and sealing performance testing to ensure stable performance in high-dust and high-load environments.

Compared with low-grade alternatives in the market, our production focuses more on:

· Stable sealing system to prevent mud and dust leakage

· Heat-treated internal components to reduce wear

· Consistent machining accuracy for better machine fit

· Balanced structure to reduce vibration during operation

Manufacturing Process and  Experience

From our production base in Quanzhou, we follow a controlled process:
Forging → CNC machining → Heat treatment → Assembly → Oil sealing test → Final inspection

We have long-term production experience in undercarriage parts such as track rollers, idlers, sprockets, and track chains, especially for Komatsu, Hitachi, Caterpillar, and other mainstream excavator models.

Where It Is Used

Carrier Roller for Komatsu PC300-7  is widely used in:

· Mining excavators

· Quarry equipment

· Heavy construction machinery

· Earthmoving projects

· Infrastructure development sites

Quality Control System

Each roller is tested before shipment:

· Radial run-out inspection

· Sealing pressure test

· Hardness testing after heat treatment

· Dimensional checking for OEM compatibility

We ensure every Carrier Roller for Komatsu PC300-7  meets stable working requirements under heavy load conditions.

Case

One of our Southeast Asia customers operating Komatsu PC300-7 excavators in a quarry project reported frequent track misalignment issues due to worn carrier rollers from previous suppliers. After switching to our products, they reduced roller replacement frequency and improved track stability during continuous 10–12 hour daily operation.

OEM and  Custom Service

We support:

· OEM production based on drawings or samples

· Logo marking on carrier roller body

· Packaging customization for distributors

· Bulk supply for machinery dealers

FAQ

Q1: Is this Carrier Roller for Komatsu PC300-7 compatible with original parts?
Yes, we manufacture according to OEM specifications to ensure proper fit with Komatsu PC300-7 undercarriage systems.

Q2: What is the service life of your carrier roller?
Service life depends on working conditions, but our heat-treated structure and sealing system are designed for long-term heavy-duty use.

Q3: Do you provide inspection before shipping?
Yes, every batch is fully inspected including sealing, hardness, and dimensional checks before shipment.

Q4: Can you supply in bulk for dealers?
Yes, we support wholesale supply and long-term cooperation for global distributors.