Dingtai manufactures Liebherr carrier rollers, also known as top rollers, supporting track chain weight and maintaining alignment in undercarriage systems.
Factory-direct production with comprehensive OEM manufacturing services; we supply replacement carrier rollers for global distributors and equipment owners.
Our carrier rollers resist flange wear and seal failure, reducing unplanned downtime and preventing premature track chain elongation in demanding conditions.
With over 20 years of engineering experience and ISO9001/SGS-certified processes, we deliver consistent quality that procurement directors can verify.
Forged 35MnB steel, deep quenching to HRC 52-58, and precision-machined sealing surfaces ensure long service life under heavy loads.
Core Selling Points
- Premium 35MnB Material: Forged 35MnB steel provides high tensile strength and impact resistance, essential for heavy Liebherr undercarriage loads.
- Deep Quenching/Heat Treatment: Induction hardening achieves HRC 52-58 on tread and flange, extending wear life and reducing replacement frequency.
- 100% QC Inspection: Every roller undergoes dimensional checks, hardness testing, and seal leakage tests before dispatch to ensure zero-defect delivery.
- OEM Capabilities: We manufacture to Liebherr OEM drawings or customer samples, ensuring exact fit and interchangeability with genuine parts.
Product Grid
Our catalog of Liebherr carrier rollers includes various specifications, fully compatible with Liebherr excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | Forged 35MnB steel |
| Tread Hardness | HRC 52–58 |
| Flange Hardness | HRC 50–55 |
| Hardening Depth | 4–8 mm |
| Seal Type | Floating seal / dual cone |
| Process | Forging, machining, induction hardening, assembly |
| Certification | ISO 9001, SGS |
| Warranty | 12 months / 2,000 working hours |
OEM & Customization
We match original drawings, custom dimensions, bolt patterns and surface treatments; strict adherence to OEM standards ensures drop-in replacement for Liebherr undercarriages.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Liebherr | R914, R924, R934, R944, R954 |
| Mining Excavator | Liebherr | R960, R970, R980 |
| Crawler Dozer | Liebherr | PR724, PR734, PR744, PR754 |
Delivery & Logistics
We ship worldwide with reliable packing; factory-direct pricing and flexible MOQ from 1 piece for trial orders or bulk containers.
Technical Features
Floating seal design uses dual metal cones and elastomer O-rings to keep lubricant in and contaminants out, critical for abrasive mining conditions.
Bimetal bushing with high-strength steel backing and sintered bronze layer reduces friction and supports heavy radial loads without galling.
Precision-forged roller shell maintains concentricity and uniform wall thickness, preventing stress cracks and extending structural fatigue life.
Applications
- Open-pit mining
- Quarrying and aggregate processing
- Heavy civil road construction
- Demolition and scrap handling
- Forestry and land clearing
Frequently Asked Questions
- What is your MOQ for Liebherr carrier rollers?
MOQ is flexible; one piece for trial, bulk orders for OEM clients. - What is the delivery time?
Standard models 15–25 days; custom production 30–45 days depending on quantity. - What is the heat treatment depth?
Induction hardening depth is 4–8 mm, achieving HRC 52–58 on wear surfaces. - What is your warranty policy?
12 months or 2,000 working hours; free replacement for verified material or manufacturing defects. - How do I match part numbers?
Send the Liebherr part number or dimension drawing; our engineers cross-check and confirm exact fit. - Do you offer OEM branding?
Yes, neutral or custom branding, painting, and packaging to meet distributor requirements. - Can you produce non-standard carrier rollers?
Yes, we reverse-engineer from samples and provide custom dimensions for special applications.
Maintenance Guide
- Check roller tread and flange wear every 500 hours; replace if flange thickness is reduced by more than 30%.
- Listen for metallic squealing or oil leakage around seals; these indicate internal bushing or floating seal failure.
- Clean debris from roller area before installation; torque mounting bolts to Liebherr specification.
- Rotate or replace rollers in matched sets to maintain even track chain alignment and avoid uneven wear.