Dingtai manufactures Komatsu bulldozer undercarriage parts including track rollers, carrier rollers, idlers, sprockets, track chains, and track shoes for stable traction.
We offer factory-direct supply and full OEM manufacturing services for Komatsu equipment owners, dealers, and fleet maintenance teams worldwide.
Our components resist premature wear, cracking, and seal failure, reducing unplanned downtime in abrasive, high-load bulldozer applications.
With over 20 years of engineering experience and ISO9001/SGS-certified processes, Dingtai ensures consistent quality and measurable component life.
We use 35MnB steel, deep induction hardening, and precision machining to deliver HRC 50-56 wear surfaces for extended undercarriage service intervals.
Core Selling Points
- Premium 35MnB Material: Forged 35MnB steel provides high tensile strength and impact resistance, reducing roller and idler shell failure in rocky conditions.
- Deep Quenching/Heat Treatment: Induction hardening produces HRC 50-56 wear layers with deep case depth, extending track chain and roller life under abrasion.
- Global Brand Compatibility: Components match Komatsu OEM part numbers and dimensions for D20 through D475 bulldozers, ensuring direct replacement without field modification.
- 100% QC Inspection: Each batch undergoes dimensional checks, hardness testing, and visual inspection before shipment to maintain ISO9001 and SGS quality standards.
Product Catalog
Our catalog of Komatsu Bulldozers undercarriage parts includes various specifications, fully compatible with Komatsu D20–D475 bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40Mn2 forged steel |
| Wear Surface Hardness | HRC 50–56 |
| Heat Treatment Depth | 6–12 mm case depth |
| Manufacturing Process | Forging, CNC machining, induction hardening |
| Certification | ISO9001:2015, SGS |
| Warranty | 12 months or 2,000 hours |
OEM & Customization
We match OEM drawings or reverse-engineer samples, machine custom dimensions, and follow strict Komatsu interchange standards for direct-fit replacement.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Small Bulldozer | Komatsu | D20, D21, D31, D37, D41 |
| Medium Bulldozer | Komatsu | D51, D61, D65, D75, D85 |
| Large Bulldozer | Komatsu | D155, D275, D355, D375, D475 |
Delivery & Logistics
We ship worldwide from Quanzhou with reliable freight options, offer factory-direct pricing, and accept flexible MOQs from trial orders to full containers.
Technical Features
Sealed track rollers use floating seals to retain lubricant and block abrasive contamination. This stabilizes oil film thickness under continuous high-pressure bulldozer loads.
Bimetallic bushings reduce pin-to-bushing friction; induction-hardened wear surfaces maintain track pitch stability, reducing vibration and sprocket tooth wear.
Forged 35MnB steel combines a tough core with a hard HRC 50–56 case, preventing impact cracking in rocky underfoot conditions.
Applications
- Mining and quarrying
- Road construction and infrastructure
- Landfill and waste handling
- Forestry and land clearing
- Heavy civil earthmoving
Frequently Asked Questions
- Q: What is the minimum order quantity for Komatsu undercarriage parts?
A: MOQ varies by part type. Track rollers often start at 10 pcs, track chains at 2 pairs; sample orders are available. - Q: What is the delivery time?
A: Standard production takes 15–30 days after deposit and drawing confirmation, depending on order size and customization. - Q: How deep is the heat treatment on track rollers?
A: Wear surfaces are hardened to HRC 50–56 with a case depth typically 6–12 mm, depending on OEM specifications. - Q: What warranty do you provide?
A: 12 months or 2,000 working hours against manufacturing defects under normal operating conditions. - Q: Can you match Komatsu OEM part numbers?
A: Yes. Provide the OEM part number or drawing; we cross-reference and manufacture to original dimensions and tolerances. - Q: Do you supply complete undercarriage kits?
A: Yes, we supply individual parts or complete track group kits matched to machine weight and application. - Q: Are your parts suitable for mining applications?
A: Yes, heavy-duty material and heat treatment options are available for high-abrasion mining and quarrying.
Maintenance Guide
- Installation: Confirm part number and bolt torque specifications before assembly; use calibrated torque wrenches to prevent joint loosening.
- Inspection: Check track sag, roller oil leakage, and sprocket tooth wear every 250 operating hours to catch early failure.
- Replacement: Replace rollers when tread wear exceeds 30% or when oil leakage indicates floating seal failure.
- Lubrication: Do not mix oil grades in sealed rollers; use recommended heavy-duty gear oil for lifetime lubrication.
- Track Tension: Maintain correct track sag; excessive tension increases bushing and sprocket wear, while loose track causes derailment.