Dingtai manufactures Daewoo track cylinder pistons, precision hydraulic components that regulate track tension and recoil in excavator undercarriage systems.
We offer factory direct service with full OEM manufacturing support, supplying replacement pistons for global dealers, importers, and rental fleets.
A worn piston causes track slippage and uneven tension. Our components restore hydraulic stability, reduce downtime, and prevent costly undercarriage breakage.
With over 20 years of production experience, Dingtai is ISO9001 certified and SGS audited, ensuring consistent quality for every batch.
We use 35MnB steel, deep quenching, and precision grinding to deliver high-strength pistons that withstand extreme hydraulic pressure and wear.
Core Selling Points
- Premium 35MnB Material: Forged 35MnB alloy steel provides high tensile strength and impact resistance, reducing deformation and cracking in high-pressure track cylinder applications.
- Deep Quenching/Heat Treatment: Induction hardening and deep quenching create a wear-resistant case while maintaining a tough core, extending piston service life in abrasive conditions.
- ISO9001/SGS Certified: Our quality system meets ISO9001 standards, and SGS inspections verify material composition, hardness, and dimensional accuracy for export orders.
- OEM Capabilities: We produce according to supplied drawings, OEM part numbers, and sample dimensions, supporting private label and exact fitment requirements.
Our catalog of Daewoo Track Cylinder Piston includes various specifications, fully compatible with Daewoo and Doosan excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Technical Parameter | Specification |
|---|---|
| Material | 35MnB forged alloy steel / 45# steel |
| Hardness (HRC) | 50–55 surface; core 220–280 HB |
| Heat Treatment | Induction hardening, deep quenching, tempering |
| Surface Finish | Ra 0.4 µm hard chrome plating |
| Process | Precision forging, CNC machining, grinding |
| Certification | ISO9001, SGS |
| Warranty | 12 months from shipment |
OEM & Customization
Provide OEM part numbers or drawings. We manufacture exact dimensions, materials, and tolerances to match Daewoo specifications, including private label packing.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Hydraulic Crawler Excavator | Daewoo | DH220LC, DH280LC, DH300LC, Solar 220LC-V, Solar 300LC-V |
| Hydraulic Crawler Excavator | Doosan | DX225LC, DX300LC, DX350LC |
| Heavy Excavator | Daewoo / Doosan | DH420LC, DH500LC, DX480LC |
Delivery & Logistics
We ship from Quanzhou with reliable ocean and express options. Factory-direct pricing applies from one unit; custom orders support flexible MOQ planning.
Technical Features
The piston converts hydraulic flow into smooth linear force, maintaining proper track tension. Precision-machined seal grooves prevent internal bypass and pressure loss.
Hard chrome plating on the dynamic surface reduces friction and corrosion. This protects against scoring caused by contaminated hydraulic oil or abrasive slurry.
Tight dimensional tolerances ensure stable recoil response. The piston absorbs shock loads, protecting track adjusters, idlers, and final drives from premature failure.
Applications
- Mining and quarrying
- Road and highway construction
- Trenching and pipe laying
- Demolition and site clearing
- Heavy earthmoving and aggregate handling
- Forestry and land development
Frequently Asked Questions
What is the MOQ for Daewoo track cylinder pistons?
Standard pistons have an MOQ of 1–5 units. Custom specifications typically require 20–50 units depending on material and machining.
How long is delivery?
Stock standard products ship within 7–15 days. Custom-manufactured pistons require 25–35 days after drawing confirmation.
What material is used?
We use forged 35MnB alloy steel or 45# steel with hard chrome plating to achieve high strength and wear resistance.
Can you match Daewoo part numbers?
Yes. Submit your OEM part number or drawing. We verify dimensions, tolerances, and surface finishes before production.
What heat treatment depth do you provide?
Effective case depth ranges from 1.5 to 3.0 mm, with surface hardness HRC 50–55 depending on piston size and application.
What warranty applies?
We provide a 12-month warranty from shipment, covering material defects, machining errors, and non-conforming hardness.
Do you offer samples?
Yes, samples are available for standard models. Air freight is recommended to reduce lead time.
How do I confirm compatibility?
Send machine model, serial number range, or piston dimensions. Our engineers cross-reference Daewoo and Doosan catalog data.
Maintenance Guide
- Before installation, clean cylinder bore and verify hydraulic oil cleanliness to prevent contamination damage.
- Inspect piston sealing surfaces for scoring, pitting, or chrome peeling. Replace if any surface defect is visible.
- Follow Daewoo service manual torque values for cylinder head and track adjuster fasteners during assembly.
- Check track tension every 250 operating hours. Sudden slack indicates piston seal wear or internal leakage.
- Replace pistons and seals as a matched set. Never reuse damaged seals with new piston components.