We manufacture Yanmar track adjust assemblies that control track tension, absorb impact and keep the undercarriage aligned during operation.
Dingtai is a factory-direct supplier offering full OEM manufacturing services for global distributors, rental fleets and equipment maintenance companies.
Our assemblies prevent sudden track loosening, sideload wear and idler frame damage, reducing unplanned downtime in tough digging conditions.
With over 20 years of production experience, Dingtai operates under ISO9001 quality systems and SGS-verified inspection protocols.
We use 35MnB forged steel and deep quenching on rods to achieve high fatigue strength and reliable grease seal performance.
Core Selling Points
- Premium 35MnB Material: Forged 35MnB steel body delivers high tensile strength and fatigue resistance, reducing cracking under continuous track tension and excavation stress.
- Deep Quenching/Heat Treatment: Induction hardening and deep quenching produce a 50-55 HRC rod surface, minimizing seal wear and extending service life in abrasive conditions.
- Global Brand Compatibility: Direct replacement for Yanmar ViO and B series excavators with exact bore, stroke and pin dimensions for easy installation.
- ISO9001/SGS Certified: Every assembly is manufactured under ISO9001 quality control and SGS-inspected to ensure dimensional accuracy and leak-free performance.
Product Range
Our catalog of Yanmar Track Adjust Assembly includes various specifications, fully compatible with Yanmar mini excavators, compact excavators and crawler carriers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Body Material | Forged 35MnB / 35CrMo steel |
| Rod Surface Hardness | 50-55 HRC |
| Process | CNC machining, deep quenching, precision honing |
| Certification | ISO9001, SGS |
| Warranty | 12 months / 1,500 hours |
2. OEM & Customization
Provide drawings or OEM part numbers. We match bore, stroke, pin diameter and seal specifications to strict Yanmar replacement standards.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Mini Excavator | Yanmar | ViO17, ViO25, ViO35, ViO55 |
| Compact Excavator | Yanmar | B27, B37, B50, SV08, SV100 |
| Crawler Carrier | Yanmar | C30R, C50R |
4. Delivery & Logistics
Factory-direct pricing with flexible MOQ starts at 10 pieces. We ship worldwide by sea or air with reinforced export packing.
Technical Features
The grease-filled cylinder body pushes the front idler forward. A floating seal retains grease while blocking dirt, water and abrasive slurry from entering.
Chrome-plated and induction-hardened piston rods reduce friction and seal wear. The forged 35MnB body withstands continuous side loads and vibration.
A built-in relief valve prevents over-tension damage when debris lodges in the track, protecting the final drive and idler shaft from shock loads.
Applications
These Yanmar track adjust assemblies support compact equipment in demanding conditions:
- Utility trenching and cable laying
- Road construction and shoulder maintenance
- Pipeline and drainage installation
- Landscaping and site development
- Quarry support operations
- Demolition and interior excavation
Frequently Asked Questions
What is the minimum order quantity for Yanmar track adjust assemblies?
MOQ is 10 pieces for standard sizes. Sample orders are accepted for first inspection and quality verification.
How long does delivery take?
Standard models ship within 15-25 days. Custom OEM orders generally require 30-45 days depending on quantity.
What heat treatment depth does the piston rod receive?
The rod surface is induction hardened to 1.5-2.5 mm depth, reaching 50-55 HRC for wear resistance.
What warranty policy applies?
We provide 12 months or 1,500 operating hours against material and manufacturing defects under normal use.
Can Dingtai match a Yanmar OEM part number?
Yes. Provide the OEM part number or drawing. We verify dimensions and supply a direct replacement.
Are these assemblies compatible with Yanmar ViO and B series?
Yes, we produce replacements for ViO17-ViO55 and B series compact excavators.
What material is used?
Forged 35MnB steel body with chrome-plated induction-hardened rod. Seals are imported NBR/Viton.
Maintenance Guide
- Check track sag daily: Maintain 10-15 mm clearance between idler and track frame for compact Yanmar machines.
- Grease slowly: Use a low-pressure grease gun at the adjuster fitting to prevent seal damage from over-tension.
- Inspect every 250 hours: Look for grease leaks, rod scoring or a cylinder that cannot hold tension.
- Replace when needed: Install a new track adjust assembly if tension bleeds off quickly or idler alignment is unstable.