Quanzhou Mingzhu Technology Development Co., Ltd
| Hardening Depth | Deep Case Hardened Wear Layer Technology |
| Load Capacity | Heavy-duty Load-bearing Design |
| Packaging Details | Export pallet packing |
| Bearing Arrangement | Heavy-duty Integrated Bearing Assembly |
| Supply Ability | 1500 MT/month |
| Payment Terms | L/C,D/A,D/P |
| Track Guidance Function | Optimized Upper Track Alignment Support |
| Delivery Time | 3-7 days |
| Material | High-strength Forged Alloy Steel |
| Axial Impact Resistance | Enhanced Side-load Bearing Capability |
| Certification | CE、SGS、CNAS、COC、ISO |
| Model Number | PC300-8 |
| Brand Name | STST |
| Place of Origin | Fujian China |
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Product Specification
| Hardening Depth | Deep Case Hardened Wear Layer Technology | Load Capacity | Heavy-duty Load-bearing Design |
| Packaging Details | Export pallet packing | Bearing Arrangement | Heavy-duty Integrated Bearing Assembly |
| Supply Ability | 1500 MT/month | Payment Terms | L/C,D/A,D/P |
| Track Guidance Function | Optimized Upper Track Alignment Support | Delivery Time | 3-7 days |
| Material | High-strength Forged Alloy Steel | Axial Impact Resistance | Enhanced Side-load Bearing Capability |
| Certification | CE、SGS、CNAS、COC、ISO | Model Number | PC300-8 |
| Brand Name | STST | Place of Origin | Fujian China |
| High Light | komatsu excavator top roller ，excavator top roller pc300-8 ，komatsu top roller excavator | ||
Komatsu PC300-8 Top Roller, Low Temperature Resistant Carrier Roller, Anti-Crack & Greak Sealed Undercarriage Spare Parts, Heavy Duty Excavator Replacement Parts for Russia Frozen Soil Mining & Cold Region Construction, OEM Parts In Stock
Special low-temperature oil seals, no grease leakage under extreme freezing weather
The Komatsu PC300-8 Carrier Roller is engineered to provide reliable support for the upper track chain while ensuring smooth and efficient crawler movement. As a vital component of the excavator undercarriage system, the top roller helps reduce track stress, maintain proper track alignment, and improve overall machine performance.
Manufactured from premium-grade alloy steel and subjected to advanced heat treatment processes, this heavy-duty carrier roller is built to withstand abrasive environments, heavy loads, and long operating hours. It is an ideal replacement solution for Komatsu PC300-8 excavators used in construction, mining, quarrying, and infrastructure projects.
The roller shell is manufactured from high-strength steel to withstand continuous pressure from upper track chain movement.
Special hardening technology improves surface durability and helps reduce abrasive wear during operation.
The internal shaft and bearing arrangement are designed to improve load distribution and enhance rotational stability.
A premium floating seal system prevents lubricant loss while keeping dirt, mud, and moisture away from critical components.
Precision machining ensures smooth roller rotation and stable crawler system operation even under heavy workloads.
Choosing a high-quality PC300-8 top roller can help:
This PC300-8 carrier roller is suitable for a wide range of working environments:
Provides dependable performance for excavation, foundation work, and large-scale building projects.
Handles heavy loads and abrasive materials commonly found in mining environments.
Designed to withstand continuous operation in rocky and high-impact conditions.
Supports stable machine operation for road construction, utility installation, and public works projects.
Our carrier rollers are produced using a strict manufacturing process to ensure consistent quality.
Premium alloy steel is selected for strength, durability, and wear resistance.
Forging improves material density and structural integrity.
Accurate machining ensures dimensional consistency and reliable installation.
Controlled hardening increases surface strength without compromising toughness.
Every carrier roller is thoroughly inspected before packaging and shipment.
A carrier roller supports the upper section of the track chain and helps guide track movement during machine operation.
Service life depends on operating conditions, maintenance practices, and workload intensity. High-quality rollers generally provide significantly longer operating hours.
Yes. This carrier roller is specifically designed for Komatsu PC300-8 undercarriage systems.
Yes. OEM and custom manufacturing services are available according to customer drawings, specifications, or samples.
WhatsApp: +86 15260795051
Gmail: shellywang030801@gmail.com
www.bulldozerpart.com
Long Service Life, Excavator Top Roller, Heavy Duty, Heavy Load, Low Temperature Resistant
Company Details
Business Type:
Manufacturer
Year Established:
2006
Total Annual:
8000000-12000000
Employee Number:
67~120
Ecer Certification：
Verified Supplier
Quanzhou Mingzhu Technology Development Co., Ltd Quanzhou Mingzhu Technology Development Co., Ltd
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