PC200LC-7 OEM Replacement Top Roller High-grade Steel Carrier Roller with HRC52-56 Hardness for Excavator Undercarriage

This heavy-duty carrier top roller is a 1:1 OEM direct replacement for PC200LC-7 long track excavators, with standard OEM part number 207-30-00150. Perfectly matching original mounting dimensions and bolt holes, it requires no cutting, drilling, or on-site modification. It effectively supports track operation, prevents track sagging and vibration, and optimizes undercarriage running performance for long-hour heavy-duty excavator fleets.

PC200LC-7 long track excavators undertake heavier track load compared to standard chassis models, widely used in large earthmoving projects, quarry mining, highway construction, and harsh muddy working sites. Continuous gravel friction, long-term water immersion, and frequent walking impact bring higher load pressure to undercarriage rollers. This reinforced top roller is customized for long chassis heavy-load working demands, maintaining stable running performance at all times.

Manufactured using high-strength one-piece forging steel blanks to bear extra heavy loads of long track machines. Dual standard heat treatment is adopted: integral quenching improves surface hardness for outstanding wear resistance; tempering eliminates internal metal residual stress to enhance overall impact toughness. All mounting holes and matching surfaces are processed by high-precision CNC equipment, with machining tolerance strictly controlled within 0.01mm, fully consistent with original factory OEM standards.

• Raise the excavator track with a hydraulic jack to separate track from ground and release partial track tension
• Remove fixing bolts of the old top roller, take out damaged roller and clean dust and sediment on the mounting base
• Place the new top roller in original position, align reserved bolt holes accurately
• Lock all fixing bolts with standard torque, reset track tension and conduct track idle running test
• Check no abnormal vibration or friction noise to complete installation

• Reinforced structure adapts to higher load of PC200LC-7 long track chassis
• High-precision size matching stabilizes track running and reduces walking vibration
• Heavy-duty floating seal structure effectively isolates dust and muddy water
• Complete dual heat treatment upgrades durability for harsh heavy-duty sites
• Direct bolt-on installation saves maintenance time and labor cost

A large engineering construction fleet operates plenty of PC200LC-7 long track excavators for quarry projects. After being equipped with our OEM-spec top rollers, all undercarriage parts maintain stable operation over 1800 working hours with excellent sealing condition and complete roller shell, cutting annual undercarriage maintenance cost by 33%.

Yes, OEM part number 207-30-00150 is fully matched with PC200LC-7 long chassis model, no extra adjustment needed.

Yes, it can also fit standard PC200-7 excavator with the same installation dimension.

Yes, we can provide professional heat treatment reports and dimensional inspection reports to support customer quality inspection and customs clearance.