Dingtai manufactures Kubota track cylinder pistons as precision hydraulic components that transfer force inside track tensioner cylinders for stable track tension.
We are a factory-direct China manufacturer providing full OEM production, custom dimensions, and strict tolerance control for global Kubota parts distributors.
Our pistons prevent scoring, hydraulic pressure loss, and seal leakage, reducing track derailment risk and avoiding costly excavator downtime in demanding jobsites.
With over 20 years of engineering experience and ISO9001/SGS-certified processes, Dingtai delivers consistent dimensional accuracy and metallurgical quality for every production batch.
Key technology includes 40Cr/45# steel, induction hardening to HRC 45–52, and hard chrome plating for high surface hardness and long service life.
Core Selling Points
- 20+ Years Experience — Dingtai has produced excavator undercarriage and hydraulic components since 2003, supplying proven reliability to North America, Europe, and Asia.
- Global Brand Compatibility — Our Kubota track cylinder pistons match KX, U, and R series OEM drawings for drop-in fit and correct pressure performance.
- Precision Forging/Casting — Pistons are CNC-machined from forged or centrifugally cast bar stock to tight tolerances for exact cylinder bore clearance.
- ISO9001/SGS Certified — All production and inspection follow ISO9001 standards; material certificates and hardness reports are available with every export shipment.
Our catalog of Kubota Track Cylinder Pistons includes various specifications, fully compatible with Kubota KX, U, and R series excavators and compact track loaders.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 40Cr / 45# alloy steel |
| Hardness HRC | HRC 45–52 after induction hardening |
| Surface Treatment | Hard chrome plating, polished |
| Process | CNC turning, induction hardening, precision grinding |
| Certification | ISO9001 / SGS material report |
| Warranty | 12 months against manufacturing defects |
2. OEM & Customization
We manufacture from customer drawings or samples, matching OEM piston diameter, stroke length, groove dimensions, and surface finish under strict tolerance control.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Mini Excavators | Kubota | KX71-3, KX121-3, KX161-3, U25, U35, U55 |
| Compact Track Loaders | Kubota | SVL75, SVL90, SVL97 |
4. Delivery & Logistics
We offer flexible MOQ, factory-direct pricing, and reliable sea, air, or express shipping. Standard production time is 15–30 days depending on order quantity.
Technical Features
The piston body is induction-hardened to HRC 45–52 and hard-chrome plated to reduce seal friction and resist abrasive scoring.
Precision-ground outer diameter maintains controlled clearance inside the cylinder bore, preventing hydraulic fluid bypass and pressure loss.
O-ring and seal grooves are CNC-cut to OEM depth, ensuring proper sealing under high-pressure track tension loads.
Applications
- Mining and quarrying
- Road construction
- Utility trenching and municipal works
- Demolition and site preparation
- Landscaping and compact earthmoving
Frequently Asked Questions
What is the minimum order quantity?
MOQ is 10 pieces for standard specifications. Trial orders of 1–5 pieces are accepted for stock samples or first-article approval.
What is the delivery time?
Standard production takes 15–30 days. Stock samples ship within 3–7 days; bulk order timing depends on quantity and customization.
What is the heat treatment depth?
Induction hardening depth is 1.5–3.0 mm depending on piston diameter, achieving HRC 45–52 on the wearing surface.
What warranty do you offer?
We provide a 12-month warranty against material and manufacturing defects under normal operating conditions.
Can you match my Kubota part number?
Yes. Send the OEM part number or drawing. We cross-check dimensions and supply an exact replacement.
Do you support OEM branding?
Yes. Neutral packaging, laser marking, and custom branding are available for volume orders.
Maintenance Guide
- Inspect the chrome surface for scoring, pitting, or bend marks; replace if damage depth exceeds 0.1 mm.
- Install new seal kits whenever replacing pistons to prevent hydraulic fluid bypass and contamination.
- Clean the cylinder bore and lubricate the piston with clean hydraulic oil before assembly; avoid dry metal contact.
- Tighten cylinder head and fittings to OEM torque values, then test track tension after installation.
- Inspect track cylinder pistons every 500 operating hours or when track tension drops repeatedly.