Dingtai manufactures Yanmar track cylinder pistons as direct replacement components for hydraulic track tensioner cylinders in excavator undercarriage systems worldwide.
Factory-direct operations serve North American and global clients with full OEM manufacturing, strict dimensional control, and competitive wholesale pricing.
Our pistons eliminate premature seal failure and track tension loss, preventing unscheduled downtime in high-cycle hydraulic applications and extending service intervals.
Dingtai has over 20 years of heavy machinery component experience and holds ISO9001 and SGS certification for consistent quality assurance.
Each piston features induction hardening and precision chrome-plated surfaces to resist scoring, corrosion, and extreme operational pressure.
Core Selling Points
- Global Brand Compatibility: Direct fit for Yanmar ViO, B, and SV series excavators; engineered from OEM drawings to meet original tolerances.
- Precision Forging/Casting: High-strength forged pistons provide superior structural integrity under cyclic hydraulic pressure compared to standard cast alternatives.
- Deep Quenching/Heat Treatment: Induction heat treatment creates a hardened wear layer while retaining a tough core for long service life.
- 100% QC Inspection: Every piston undergoes dimensional inspection, hardness testing, and surface finish verification before shipment.
Our catalog of Yanmar Track Cylinder Pistons includes various specifications, fully compatible with Yanmar excavators and compatible OEM models.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 42CrMo alloy steel / 45# steel |
| Surface Hardness | HRC 50-55 |
| Process | Precision forging, induction hardening, hard chrome plating |
| Certification | ISO9001, SGS |
| Warranty | 12 months / 2,000 hours |
2. OEM & Customization
Dingtai replicates OEM drawings or develops custom dimensions. Every piston follows strict tolerances, material grades, and surface finishes required for Yanmar compatibility.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Mini Excavators | Yanmar | ViO17, ViO35, ViO55 |
| Compact Excavators | Yanmar | B37, B50, SV100 |
| Crawler Excavators | Yanmar | ViO80 |
4. Delivery & Logistics
Factory-direct packing reduces freight weight. Reliable sea and air shipping supports flexible MOQs, with inspection reports included before dispatch.
Technical Features
Induction hardening creates a 1.5-2.5 mm wear-resistant layer on the piston surface while maintaining core toughness under repeated hydraulic loads.
Hard chrome plating improves surface finish to Ra 0.2-0.4 μm, reducing seal friction and extending hydraulic oil service intervals.
Precision grinding ensures consistent roundness and diameter tolerance within 0.02 mm for leak-free cylinder operation.
Applications
- Commercial and residential construction
- Utility installation and trenching
- Road maintenance and repair
- Landscaping and site preparation
- Demolition and material handling
Frequently Asked Questions
What is the MOQ for Yanmar track cylinder pistons?
Standard MOQ is 10 pieces per specification. Trial orders of 1-2 pieces are available for existing stock items.
What is the delivery time?
Stock pistons ship within 7-10 days. Custom production takes 20-35 days depending on order size and machining requirements.
What heat treatment depth do you apply?
Induction hardening depth is 1.5-2.5 mm, with surface hardness HRC 50-55. Core hardness remains HRC 22-28 for strength.
What warranty is provided?
Dingtai provides a 12-month or 2,000-hour warranty against material and workmanship defects under normal operating conditions.
How do I match part numbers?
Send the OEM part number, machine model, or dimensional drawing. Our engineers verify compatibility before production or shipment.
Can you produce custom Yanmar pistons?
Yes. We manufacture from customer drawings or samples, including non-standard dimensions, coatings, and packaging requirements.
Maintenance Guide
- Installation: Check cylinder bore and seal grooves for scoring before fitting; use clean hydraulic oil.
- Inspection: Inspect piston surface for chrome peeling, scratches, or discoloration every 500 hours.
- Replacement: Replace pistons if diameter wear exceeds 0.1 mm or seal contact areas show pitting.
- Testing: After installation, cycle the track tension cylinder several times to purge air and verify pressure.