Dingtai manufactures Mitsubishi track cylinder pistons, the core internal component that converts hydraulic pressure into precise track tension adjustment force in crawler undercarriage systems.
Factory-direct production with full OEM services: custom dimensions, material upgrades, and private labeling for distributors, dealers, and equipment fleets worldwide.
Our pistons prevent track tension failure and unscheduled downtime with hardened surfaces that resist scoring, corrosion, and high-pressure fatigue under continuous load.
Backed by 20+ years of undercarriage component manufacturing and ISO9001/SGS-certified quality systems, we deliver repeatable precision batch after batch.
Pistons use 35MnB alloy steel with deep quenching and precision grinding, ensuring tight dimensional tolerances and long service life under severe operating conditions.
Core Selling Points
- Premium 35MnB Material: Each piston is forged from 35MnB alloy steel, providing high core strength and wear resistance required by Mitsubishi track tension cylinders.
- Deep Quenching/Heat Treatment: Controlled deep quenching hardens the working surface to 50–55 HRC while maintaining a tough core against hydraulic fatigue cracking.
- Precision Forging/Casting: Precision forging produces a dense grain structure and consistent dimensional stability, reducing internal leakage and improving cylinder response under load.
- 100% QC Inspection: Every piston undergoes dimensional inspection and hardness testing before shipment, ensuring reliable fit and performance for aftermarket replacement.
Our catalog of Mitsubishi Track Cylinder Piston includes various specifications, fully compatible with Mitsubishi excavators and bulldozers.
Product Range
Our catalog of Mitsubishi Track Cylinder Piston includes various specifications, fully compatible with Mitsubishi excavators and bulldozers.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB alloy steel |
| Hardness | 50–55 HRC wear surface |
| Heat Treatment | Deep quenching + tempering |
| Surface Finish | Precision ground, Ra ≤ 0.8 µm |
| Manufacturing Process | Precision forging, CNC machining, grinding |
| Certification | ISO9001 / SGS |
| Warranty | 12–18 months |
OEM & Customization
We match original drawings, part numbers, or samples; custom dimensions and strict OEM tolerances are followed for direct Mitsubishi replacement fitment.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Mitsubishi | MS Series, MM Series |
| Bulldozer | Mitsubishi | BD Series, BS Series |
Delivery & Logistics
Reliable global shipping with factory-direct pricing. Flexible order quantities from trial samples to bulk container loads support project-based procurement schedules.
Technical Features
The piston is micro-finished to maintain an optimal hydraulic seal contact band, minimizing internal leakage and keeping track tension consistent under dynamic load.
Through-zone deep quenching creates a high-hardness wear surface while retaining a ductile core, preventing fatigue cracks caused by cyclic hydraulic pressure.
Tight diameter tolerances ensure correct clearance with cylinder bores and seal grooves, reducing contamination ingress and extending overall seal service life.
Applications
- Mining operations
- Road construction
- Quarrying and aggregate
- Heavy earthmoving
- Forestry and land clearing
- Demolition and high-vibration work
Frequently Asked Questions
A: We accept trial sample orders for evaluation. Standard production MOQ depends on piston specifications, typically 50–100 pieces per batch.
A: Standard in-stock specifications ship within 15–25 days. Custom OEM production typically takes 30–45 days based on order quantity.
A: Surface hardening depth is normally 2–5 mm depending on piston diameter, producing a 50–55 HRC wear layer with a ductile core.
A: We provide 12–18 months warranty against material and manufacturing defects under normal operating conditions.
A: Yes, provide the original Mitsubishi part number or drawing. We cross-reference to ensure exact dimensional and material match.
A: No, Dingtai manufactures aftermarket OEM-spec pistons. They are not genuine Mitsubishi parts but are designed for direct replacement.
A: Yes, we produce custom outside diameters, lengths, and surface finishes according to your drawings or samples.
A: Material certificates, hardness reports, and dimensional inspection reports are available with each batch.
Maintenance Guide
- Inspect the piston for scoring, pitting, or chrome damage before installation; replace seals and backup rings simultaneously to ensure proper sealing.
- Clean the cylinder bore thoroughly, then lubricate the piston and seals with clean hydraulic oil before assembly to prevent dry-start damage.
- Check track tension after the first 50 operating hours, then every 250 hours to detect abnormal pressure loss or cylinder drift early.
- Replace the piston if oil leakage persists after seal replacement or if measured diameter wear exceeds the manufacturer tolerance limit.
- Torque the cylinder gland nut to specification to avoid bore distortion and ensure even seal contact around the piston rod.