Dingtai manufactures Mitsubishi idler assemblies, the front undercarriage component that guides track chain links and maintains correct track tension during operation.
Factory-direct production supports full OEM services, including custom forging, finish machining, assembly, and protective painting for global distributors and equipment owners.
Heavy-duty rims and hardened wear surfaces resist deformation and oil leakage, preventing track derailment and reducing unplanned downtime on abrasive job sites.
With over 20 years of undercarriage experience and ISO9001/SGS certified processes, Dingtai delivers repeatable dimensional accuracy and verified material integrity.
Forged 35MnB steel rims and deep quenching achieve 50–58 HRC tread hardness, ensuring long service life under high-impact and abrasive conditions.
Core Selling Points
- Premium 35MnB Material: Idler rims are forged from high-tensile 35MnB steel, resisting impact deformation and cracking under severe undercarriage loads.
- Deep Quenching/Heat Treatment: Tread and flange surfaces receive induction hardening to HRC 50–58, delivering uniform wear resistance without compromising core toughness.
- Global Brand Compatibility: Mounting dimensions, bolt patterns, and shaft tolerances are precision-machined to match Mitsubishi excavator and bulldozer undercarriage specifications.
- ISO9001/SGS Certified: In-house QC covers material, hardness, dimensional, and assembly checks, with full traceability reports available for every production batch.
Our catalog of Mitsubishi idlers includes various specifications, fully compatible with Mitsubishi excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Rim Material | 35MnB forged steel |
| Shaft Material | 45# carbon steel, heat treated |
| Tread Hardness | HRC 50–58 |
| Heat Treatment | Induction quenching / tempering |
| Manufacturing Process | Forging, rough machining, finish machining, assembly, painting |
| Certification | ISO9001 / SGS |
| Warranty | 12 months or 2,000 hours, whichever occurs first |
OEM & Customization
We match original drawings, part numbers, bolt patterns, and shaft dimensions. Custom Mitsubishi idlers are produced to exact specifications for full interchangeability.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Mitsubishi | MS110, MS120, MS140, MS180, MS230, MS280, MS380 |
| Mini Excavator | Mitsubishi | MM30, MM35, MM40, MM45, MM55 |
| Bulldozer | Mitsubishi | BD2, BS3, BS3F, BD2F |
Delivery & Logistics
Dingtai ships factory-direct from Quanzhou with standard export packing. Flexible MOQ supports trial orders and bulk container programs with transparent lead times.
Technical Features
The idler assembly uses a heavy-duty shaft and double tapered roller bearings, providing stable axial and radial load capacity under continuous track tension.
Floating seals retain lubrication and block abrasive particle ingress, keeping bearing surfaces clean in dusty, muddy, or high-moisture environments.
Precision-machined hub bores and thrust washers control clearance and friction, reducing heat buildup and maintaining smooth idler rotation.
Applications
- Mining and quarry operations
- Road and highway construction
- Building demolition and site preparation
- Heavy earthmoving and infrastructure development
- Pipeline and utility right-of-way projects
Frequently Asked Questions
What is the MOQ for Mitsubishi idlers?
MOQ is 1–4 pieces for standard models. Custom OEM orders may require higher quantities depending on machining and forging setup.
What is the typical delivery time?
Standard idlers ship in 15–30 days after deposit. Custom production requires 30–45 days after drawing confirmation.
What heat treatment depth do you guarantee?
Induction hardening depth is 5–12 mm based on idler size, with tread hardness controlled between HRC 50–58.
What warranty policy applies?
A 12-month or 2,000-hour warranty covers material and heat treatment defects under normal operating conditions.
Can you match old or non-standard Mitsubishi part numbers?
Yes, provide the OEM part number or drawing. Our engineers verify dimensions and produce a directly interchangeable replacement.
Do you provide material or inspection certificates?
Yes, batch-level material certificates, dimensional reports, and SGS/ISO9001 inspection documents are available.
Are you a factory or trading company?
Dingtai is a manufacturer with in-house forging, machining, heat treatment, and assembly facilities.
Maintenance Guide
- Verify bracket alignment and torque all mounting bolts to OEM specifications before operation.
- Check for oil leaks, lateral wobble, or uneven track contact during daily inspections.
- Measure tread thickness regularly; replace the idler when wear exceeds 20–25% of the original rim section.
- Maintain correct track tension to avoid excessive bearing and seal loading.
- Service idler bearings and floating seals during major undercarriage rebuild intervals.