Product Description
| Material | 50mn,40mn2 |
| Part No. | KM909,ITM A4021000M00, 101-30-00042, 101-30-00170, 201-30-00050, 201-30-00051, 201-30-44000 |
| Finish | Smooth |
| Colors | Black, yellow, or customized |
| Technology | Forging/Casting |
| Surface Hardness | HRC55-60,depth: 8mm-12mm |
| Warranty time | 12 Months |
| Delivery Time | 25-30 days |
D20 BOTTOM ROLLER DF PART NO.:103-30-00010
Product Overview
Part Number: 103-30-00010
Fit Machine: Komatsu D20 DF Mini Crawler Bulldozer
This track roller (bottom roller) is a heavy-duty aftermarket replacement undercarriage wear part made for Komatsu D20 mini dozers. Forged from high-strength alloy steel with full-surface deep carburizing quenching heat treatment, it comes with a double-layer anti-mud leak-proof oil seal system. The roller carries the full weight of the small bulldozer and supports smooth track chain movement for landscaping, farm land leveling and small municipal construction projects.
Core Advantages
Precision Machined Replacement Installation Dimensions
Roller width, spindle length and mounting hole sizes are precisely machined to fit Komatsu D20 mini dozers seamlessly. Direct bolt-on installation is available without cutting or any modification.
Deep Hardened Roller Surface
Carburizing heat treatment creates ultra-high surface hardness and excellent wear resistance for muddy and rocky small construction job sites.
Double Multi-Layer Mud-Proof Oil Seal
High-temperature composite rubber seals block sediment and water ingress, prevent grease leakage and effectively extend maintenance intervals.
Reinforced Heavy-Duty Bearing
Offers powerful load-bearing capacity and smooth stable rotation to avoid track shaking, jumping and chain derailment.
Strict Factory Full Inspection
Each bottom roller goes through hardness testing, hydraulic leak testing and dimensional calibration before shipment.
Compatible Equipment
This aftermarket replacement roller fits Komatsu D20 DF mini crawler bulldozer perfectly.
If you are unsure of compatibility, send your machine model and photos of your old roller to our sales team for quick professional matching.
Application
Load-bearing replacement bottom track roller for Komatsu D20 small bulldozers, widely used in garden renovation, farm grading and residential small road repair machinery chassis systems.
Packing & Shipping
Adopt shockproof export wooden cases and fumigated wooden pallets for outer packaging.
We support bulk wholesale orders, mixed full-set bulldozer undercarriage spare parts, fast production lead time and global door-to-door delivery service.
Why Choose MUYE Aftermarket Undercarriage Parts
MUYE Machinery has specialized in aftermarket mini & 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 Komatsu, CAT, 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 support for accurate model matching and installation guidance
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