D7G BOTTOM ROLLER DF PART NO.:124-8250
Product Overview
Part Number: 124-8250
Fit Machine: CAT D7G Medium Crawler Bulldozer
This track roller (bottom roller) is a heavy-duty aftermarket replacement undercarriage wear part made for CAT D7G construction bulldozers. It is forged from high-strength alloy steel and treated with full-surface deep carburizing quenching heat treatment, fitted with a triple-layer anti-mud leak-proof oil seal system. The roller carries the full weight of the bulldozer and supports smooth track chain movement for road construction, stone quarrying and general earthmoving projects.
Core Advantages
Precision Machined Replacement Installation Dimensions
Roller width, spindle length and mounting hole sizes are precisely machined to fit CAT D7G bulldozers seamlessly. Direct bolt-on installation is available without cutting, welding or any modification.
Deep Hardened Roller Surface
Deep carburizing quenching delivers ultra-high surface hardness and excellent anti-abrasion performance, greatly extending service life on rocky, muddy construction job sites.
Triple Multi-Layer Mud-Proof Oil Seal
High temperature and sediment resistant composite rubber seals block mud and water ingress while preventing grease leakage, effectively cutting down maintenance frequency.
Reinforced Heavy-Duty Internal Bearing
Boasts powerful load-bearing capacity and stable smooth rotation, preventing track shaking, jumping and chain derailment during medium-load pushing operations.
Strict Factory Full Inspection
Each bottom roller undergoes hardness testing, hydraulic leak testing and dimensional calibration before packaging to ensure consistent stable quality.
Compatible Machine
This aftermarket replacement roller fits CAT D7G crawler bulldozer perfectly.
If you are unsure about compatibility, send your machine model and photos of your old track roller to our sales team for fast professional matching.
Application
Load-bearing replacement bottom track roller for CAT D7G bulldozers, widely applied in municipal road construction, stone quarries and earthmoving machinery chassis load-bearing systems.
Packing & Delivery
Adopt shockproof export wooden cases and fumigated wooden pallets for outer packaging.
We accept bulk wholesale orders, mixed full-set bulldozer undercarriage spare parts, provide fast mass production lead time and global door-to-door logistics service.
Why Choose MUYE Aftermarket Undercarriage Parts
MUYE Machinery has focused on aftermarket medium & heavy bulldozer and excavator chassis spare parts for over 10 years:
- Complete product lineup including track roller, top roller, idler, sprocket, segment and track shoe compatible with CAT, Komatsu, Doosan, Hitachi, Volvo and more 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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