Dingtai manufactures Liebherr track cylinder pistons for hydraulic track adjusters. The component transfers pressure to the idler, maintaining correct track tension.
We are a factory-direct supplier, providing OEM manufacturing from drawings or samples for global heavy equipment distributors and contractors.
Precision sealing surfaces and hardened bodies resist scoring and seal failure, reducing undercarriage wear and expensive machine downtime.
Our 20+ years of experience and ISO9001/SGS certified production ensure repeatable metallurgy, dimensional accuracy, and consistent batch quality.
We use precision CNC machining, deep induction hardening, and hard chrome plating to deliver high surface hardness and corrosion resistance.
Core Selling Points
- Precision Forging/Casting: Piston blanks are forged from high-density alloy steel, eliminating internal porosity and improving fatigue strength under repeated shock loads.
- Deep Quenching/Heat Treatment: Deep induction hardening creates a hard wear-resistant case over a tough core, preventing deformation under extreme track tension.
- 100% QC Inspection: Every piston passes dimensional inspection, hardness testing, and surface finish checks before packing, ensuring zero-defect delivery.
- Global Brand Compatibility: Our pistons match Liebherr OEM part numbers and drawings, supporting R-series excavators and PR-series dozers worldwide.
Product Catalog
Our catalog of Liebherr Track Cylinder Piston includes various specifications, fully compatible with Liebherr R-series excavators and PR-series bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | Forged 40Cr / 35MnB alloy steel |
| Surface Hardness | HRC 50–55 after induction hardening |
| Hardening Depth | 1.5–3.0 mm |
| Surface Treatment | Hard chrome plating / anti-rust oil |
| Machining Process | CNC turning, grinding, honing, drilling |
| Quality Certification | ISO9001 / SGS |
| Warranty | 12 months or 2,000 working hours |
2. OEM & Customization
We match original Liebherr drawings or sample dimensions. Custom piston diameters, seal grooves, and surface treatments are produced to strict OEM standards.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Hydraulic Excavator | Liebherr | R 900, R 914, R 924, R 926, R 934, R 944 |
| Crawler Dozer | Liebherr | PR 724, PR 734, PR 744, PR 754 |
| Mining Excavator | Liebherr | R 960, R 970, R 980 |
4. Delivery & Logistics
We ship worldwide from Quanzhou with reliable freight partners. Factory-direct pricing and flexible MOQ support urgent replacements and scheduled batch purchasing.
Technical Features
The piston operates inside the track adjuster cylinder. Grease pressure pushes the piston against the idler yoke, maintaining track sag and reducing chain wear.
Precision-ground sealing surfaces and controlled clearance reduce internal leakage. Hard chrome plating lowers friction and protects the piston from scoring and corrosion.
Induction hardening creates a hard case over a tough core, giving the piston high wear resistance without sacrificing impact strength.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Forestry
Frequently Asked Questions
Q1: What is your MOQ for Liebherr track cylinder pistons?
A: Stock pistons have a 1-piece MOQ; custom production typically starts at 10 pieces. Urgent replacement orders are accepted.
Q2: What is the delivery time?
A: Stock items ship within 3–7 days. Custom piston production takes 20–35 days depending on order quantity.
Q3: What is the heat treatment depth?
A: Induction hardening depth is 1.5–3.0 mm, with surface hardness HRC 50–55 for long wear life.
Q4: What warranty policy applies?
A: We provide 12 months or 2,000 working hours against manufacturing defects under normal operating conditions.
Q5: Can you match a Liebherr part number?
A: Yes. Send the OEM part number or sample drawing. We verify cross-reference compatibility before quotation.
Q6: Do you offer OEM or neutral packaging?
A: Yes. Neutral, Dingtai, or customer-branded packaging is available with full export protection.
Q7: Are samples available before bulk order?
A: Yes. Sample orders are accepted at unit price plus freight, and can be delivered quickly.
Q8: What materials do you use?
A: Forged 40Cr or 35MnB alloy steel, with optional hard chrome plating on sealing surfaces.
Maintenance Guide
- Clean the cylinder bore and verify piston diameter, seal grooves, and surface finish against OEM specifications before installation.
- Apply fresh grease to seals and piston surface; never dry-assemble to avoid scoring and premature seal wear.
- After installation, adjust track tension to the machine manufacturer’s specification and check for smooth travel.
- Inspect for grease leakage, scoring, or abnormal track sag every 250 working hours.
- Replace the piston if chrome layer is scratched, pitted, or dimensions exceed wear limits.