PC700 TOP ROLLER PART NO.:21N-30-00030
Product Overview
Part Number: 21N-30-00030
Fit Machine: Komatsu PC700 Heavy Mining Excavator
This carrier roller (top roller) is a heavy-duty aftermarket replacement undercarriage wear part exclusively engineered for Komatsu PC700 large mining excavators. Forged from high-strength alloy steel and treated with full-surface deep quenching heat treatment, it adopts a triple-layer anti-leak oil seal system. The roller supports the weight of the upper track chain, minimizing track vibration, abrasion and derailment under severe heavy-load working scenarios of open-pit mines and stone quarries.
Core Advantages
Precision Machined Replacement Installation Dimensions
Roller diameter, spindle length and mounting hole sizes are precisely machined to perfectly fit Komatsu PC700 excavators. Direct bolt-on installation is available without cutting or extra modification.
Ultra Deep Hardened Roller Surface
Deep carburizing quenching treatment on the roller body delivers ultra-high surface hardness and superior anti-wear performance, greatly extending service life on rocky mining sites.
Triple Multi-Layer Mud-Proof Oil Seal
High-temperature, mud and sediment resistant composite rubber seals effectively block water ingress and grease leakage, significantly prolonging lubrication maintenance intervals.
Oversized Heavy-Duty Internal Bearing
Boasts powerful heavy-load bearing capacity and smooth steady rotation, preventing track jumping and track chain detachment during intensive mining operations.
Strict Factory Full Inspection
Each top roller undergoes hardness testing, hydraulic leak testing and dimensional calibration before packaging to guarantee consistent uniform quality.
Compatible Equipment
This aftermarket replacement top roller perfectly fits Komatsu PC700 crawler mining excavator.
If you cannot confirm compatibility, send your machine model and photos of your old top roller to our sales team for fast professional matching.
Application
Replacement upper track carrier roller for Komatsu PC700 heavy mining excavators, widely used in open-pit mining, stone quarries and large-scale earthmoving heavy machinery chassis systems.
Packing & Shipping
Adopt shockproof export wooden cases together with fumigated wooden pallets as outer packaging.
We accept bulk wholesale orders, mixed full-set undercarriage spare parts orders, offer fast mass production lead time and global door-to-door logistics delivery service.
Why Choose MUYE Aftermarket Undercarriage Parts
MUYE Machinery has focused on aftermarket heavy mining & mini excavator chassis spare parts for more than 10 years:
- Complete product portfolio including top rollers, track rollers, idlers, sprockets and track shoes compatible with Komatsu, Hitachi, Kobelco, CAT, Sumitomo and other mainstream brands
- Direct factory supply with competitive wholesale prices, no extra markup from middlemen
- All aftermarket undercarriage wear parts are covered by a 12-month quality warranty
- Professional technical team provides accurate model matching and installation guidance
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