The Case bulldozer idler is an undercarriage component that guides track links, maintains track tension, and absorbs ground impact during operation.
We are a factory-direct supplier offering full OEM manufacturing services for global dealers, contractors, and equipment rebuilders requiring precise replacement parts.
This idler prevents track misalignment, uneven wear, and sudden failure, reducing downtime in high-impact dozing and grading applications.
With over 20 years of manufacturing experience and ISO9001/SGS certified processes, we deliver consistent quality for severe-duty undercarriage systems.
Forged 35MnB rims and deep quenching produce a wear-resistant surface that extends idler life under abrasive, high-load conditions.
Core Selling Points
- Global Brand Compatibility: Direct replacement idlers for Case 450 through 1850 series bulldozers, engineered to match OEM mounting dimensions and track pitch.
- Premium 35MnB Material: High-strength alloy steel rim withstands heavy impact loads and resists cracking under extreme dozer applications.
- Deep Quenching/Heat Treatment: Induction-hardened tread surface achieves HRC 52–58, providing excellent resistance to abrasive wear and plastic deformation.
- 100% QC Inspection: Every idler is dimensionally checked, hardness tested, and pressure-tested for seal integrity before shipment.
Our catalog of Case Bulldozer Idler includes various specifications, fully compatible with Case 450, 550, 650, 750, 850, 1150, 1450, 1650, and 1850 bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40Mn2 alloy steel |
| Rim Hardness | HRC 52–58 |
| Hardened Depth | 4–8 mm tread surface |
| Manufacturing Process | Forged rim, CNC machining, induction hardening, seal assembly |
| Certification | ISO9001, SGS |
| Warranty | 12 months or 2,000 hours |
2. OEM & Customization
We machine idlers to customer drawings, custom dimensions, and strict OEM standards, ensuring direct fitment without field modification.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Crawler Bulldozer | Case | 450, 550, 650, 750, 850 |
| Crawler Bulldozer | Case | 1150, 1450, 1650, 1850 |
4. Delivery & Logistics
We provide factory-direct pricing, reliable container or LCL shipping, and flexible order quantities from trial orders to full production volumes.
Technical Features
The idler rim uses 35MnB alloy steel, induction hardened to HRC 52–58, giving high resistance to abrasive wear and impact deformation.
Double floating seals and permanent lubrication retain oil and exclude dirt, extending bearing life in dusty or muddy conditions.
Precision-machined shafts and bushings maintain correct alignment, reduce track vibration, and prevent uneven link or rail wear.
Applications
- Mining and quarrying
- Road construction and grading
- Demolition and site preparation
- Forestry and land clearing
- Landfill and waste handling
Frequently Asked Questions
What is your MOQ for Case bulldozer idlers?
We accept trial orders from 1–2 pieces. Bulk orders reduce unit cost and freight per part.
How long is delivery?
Production normally takes 15–25 days after deposit confirmation. Stock idler models ship within 7 days.
How deep is the heat treatment on the idler?
Rim surface hardness is HRC 52–58, with hardened depth typically 4–8 mm depending on part number.
Do you provide a warranty?
Yes, 12 months or 2,000 operating hours against manufacturing defects under normal working conditions.
Can you match Case OEM part numbers?
Yes. Send your Case part number or drawing; our engineers cross-reference dimensions and confirm fitment before production.
Are these genuine Case parts?
No, these are aftermarket replacement idlers manufactured to meet or exceed OEM specifications at lower cost.
What material is used?
Rims are 35MnB or 40Mn2 alloy steel. Shafts use hardened 40Cr steel, and seals are floating type.
Maintenance Guide
- Inspect idler tread and flange for cracks, pitting, or uneven wear every 250 hours.
- Check oil level and look for seal leakage; contamination indicates floating seal replacement is needed.
- Maintain proper track tension; over-tightening accelerates idler shell and bearing wear.
- Replace idlers when tread depth loss exceeds 20% or flange wear affects track guidance.