Dingtai manufactures Komatsu bulldozer carrier rollers, which support the upper track chain and maintain stable track alignment during operation.
We provide factory-direct OEM manufacturing, supplying durable carrier rollers to Komatsu fleets, distributors, and equipment owners worldwide with full customization service.
Our carrier rollers prevent premature track wear and downtime by resisting flange wear, impact loads, and misalignment in harsh dozer applications.
With over 20 years of engineering experience and ISO9001/SGS-certified processes, Dingtai delivers repeatable quality and field-proven reliability for Komatsu machines.
Premium 35MnB steel, precision machining, and deep heat treatment deliver hardened tread surfaces that extend service life under heavy loads.
Core Selling Points
- Premium 35MnB Material: Carrier roller shells are forged from 35MnB steel, delivering high tensile strength and resistance to impact, cracking, and abrasive wear.
- Deep Quenching/Heat Treatment: Induction hardening creates a 6–10 mm hardened layer with HRC 50–55 on tread surfaces, reducing wear and extending service intervals.
- ISO9001/SGS Certified: Every batch is produced under ISO9001 quality systems and verified by SGS inspection, ensuring consistent dimensions, hardness, and metallurgical properties.
- OEM Capabilities: We match Komatsu OEM drawings and part numbers, producing direct-fit carrier rollers with custom branding, packaging, and neutral shipping options.
Our catalog of Komatsu Bulldozer Carrier Roller includes various specifications, fully compatible with Komatsu D20, D31, D37, D41, D50, D60, D65, D85, D155, and D275 bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40MnB forged alloy steel |
| Hardness HRC | HRC 50–55 tread surface; shaft HRC 22–28 |
| Manufacturing Process | Precision forging, CNC machining, induction hardening, tempering, grinding |
| Certification | ISO9001:2015, SGS inspected |
| Warranty | 12 months or 2,000 hours against manufacturing defects |
OEM & Customization
We match customer drawings and Komatsu part numbers, producing custom dimensions, bolt patterns, and finishes under strict OEM standards.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Bulldozer | Komatsu | D20, D31, D37, D41, D50, D60, D65, D85, D155, D275 |
Delivery & Logistics
We offer factory-direct pricing, reliable sea/air shipping, and flexible MOQ. Standard orders ship in 15–25 days after deposit approval.
Technical Features
The forged 35MnB shell is induction hardened on the tread, creating a wear-resistant surface that withstands constant track contact and impact loading.
Internal lubrication and precision bushing reduce rotational friction, dissipate heat, and keep the carrier roller running smoothly under continuous dozer cycles.
CNC-machined mounting ends and bracket seats ensure correct frame alignment, preventing axial thrust and uneven track chain wear.
Applications
- Mining and quarry operations
- Road construction and site grading
- Heavy earthmoving and land clearing
- Landfill and demolition projects
- Forestry and pipeline construction
Frequently Asked Questions
What is the smallest order quantity for Komatsu bulldozer carrier rollers?
Standard MOQ is four pieces. Sample orders are accepted for first-time quality verification.
How long is production and delivery?
Production usually takes 15–25 days after deposit confirmation, depending on order quantity and shipping destination.
What heat treatment depth do you provide?
Tread induction hardening depth is typically 6–10 mm, achieving HRC 50–55 for wear resistance.
What warranty covers your carrier rollers?
We provide 12 months or 2,000 operating hours against material and manufacturing defects under normal conditions.
Can you match Komatsu OEM part numbers?
Yes, send the OEM part number or drawing; our engineers cross-reference dimensions and mounting pattern.
Do you offer OEM or neutral packaging?
We provide aftermarket parts with neutral packaging, custom labels, and full OEM manufacturing documentation upon request.
Maintenance Guide
- Inspect carrier roller tread, flanges, and mounting bolts every 500 operating hours for wear, cracks, or looseness.
- Listen for abnormal noise and check oil leakage; replace immediately if rotation is rough or seized.
- Tighten mounting bolts to Komatsu torque specifications after the first 50 hours and at every track service.
- Replace carrier rollers in sets if tread wear exceeds OEM limits to maintain track alignment and tension.