Dingtai manufactures Kato track cylinder pistons as precision hydraulic components that control track tension and undercarriage stability in excavators.
We offer factory-direct supply with complete OEM manufacturing services, from sample development to high-volume production for global equipment distributors.
Our pistons replace worn, scored or cracked units, preventing track tension loss, hydraulic leaks and costly excavator downtime on demanding job sites.
With over 20 years of heavy machinery experience and ISO9001/SGS certified processes, Dingtai ensures consistent dimensional accuracy and metallurgical reliability.
We use 35MnB steel, precision machining and deep induction hardening to deliver high surface hardness, tight tolerances and long service life.
Core Advantages
- 20+ Years Experience: Over two decades manufacturing undercarriage and hydraulic replacement parts for global Kato operators, with proven field performance and repeat supply contracts.
- Global Brand Compatibility: Direct replacement for popular Kato excavator models; critical dimensions match OEM drawings to ensure drop-in fit without modification.
- Deep Quenching/Heat Treatment: Induction hardening creates a hard wear-resistant surface of HRC 50-58, preserving core toughness to withstand extreme hydraulic pressure.
- 100% QC Inspection: Every piston is dimensionally checked and hardness tested before shipment, eliminating out-of-tolerance parts and reducing installation risk.
Our catalog of Kato Track Cylinder Piston includes various specifications, fully compatible with Kato HD series excavators and other compatible equipment.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 45# steel with hard chrome plating |
| Surface Hardness | HRC 50-58 |
| Process | CNC precision machining, induction hardening, hard chrome plating |
| Certification | ISO9001 / SGS |
| Warranty | 12 months against material and workmanship defects |
OEM & Customization
We match original Kato drawings, custom dimensions and sealing groove specifications, ensuring exact fit and strict adherence to OEM standards for every batch.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Hydraulic Excavator | Kato | HD250, HD308, HD512 |
| Hydraulic Excavator | Kato | HD700, HD820 |
| Large Excavator | Kato | HD1023, HD1430 |
Delivery & Logistics
We provide reliable ocean or air freight and factory-direct pricing. Sample orders start from one piece; bulk orders ship in 15–25 days.
Technical Features
The piston body is precision-ground to maintain a thin oil film inside the cylinder, reducing friction and preventing scoring under high-pressure track loads.
Deep induction hardening creates a hard chrome-supported surface layer of HRC 50-58 while the core remains tough to resist hydraulic shock.
Sealing grooves are CNC-machined to OEM tolerances, ensuring correct seal compression, leak-free operation and consistent track tension control.
Applications
- Mining: Continuous track adjustment under abrasive slurry and heavy bucket loads.
- Road Construction: Reliable tensioning in asphalt and aggregate working environments.
- Quarrying: Resistance to rock dust, vibration and high-impact loading.
- Demolition: Stable track performance on uneven debris with high side-load tolerance.
Frequently Asked Questions
What is the MOQ for Kato track cylinder pistons?
We accept sample orders from 1 piece. Standard production MOQ is 10 pieces per specification.
How long is delivery?
Standard Kato piston models ship in 7–15 days. Custom machined pistons require 25–35 days depending on quantity.
What is the heat treatment depth?
Induction hardening typically reaches 2–4 mm depth with surface hardness of HRC 50–58.
What warranty do you provide?
12 months from shipment against material and workmanship defects under normal operating conditions.
Can you match my old part number?
Yes. Send the original Kato part number or drawings, and our engineers verify dimensions before quotation.
Are these genuine Kato parts?
No. Dingtai produces aftermarket replacement parts compatible with Kato models, not genuine OEM parts.
What material is used?
We use 35MnB or 45# steel with precision machining and hard chrome plating for wear resistance.
Maintenance Guide
- Before installation, inspect the piston OD for scoring, chrome peeling, pitting or uneven wear; replace if any damage is visible.
- Clean the cylinder bore thoroughly and replace all seals, O-rings and backup rings at the same time.
- Apply clean hydraulic oil to the piston surface and seal grooves during assembly to prevent dry-start scoring.
- After installation, check track tension and hydraulic pressure; incorrect pressure accelerates seal and piston failure.
- Replace the piston at the first sign of deep scoring or loss of chrome adhesion to protect the cylinder bore.