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Quanzhou Dingtai Engineering Machinery Co., Ltd. manufactures Kobelco track adjust assemblies. This hydraulic tensioning unit controls track sag and stabilizes excavator undercarriage performance.
Factory-direct production supports OEM manufacturing services for dealers, distributors, and fleet maintenance teams. We provide custom dimensions and reliable replacement supply across global markets.
The assembly prevents premature track wear, derailment, and unscheduled downtime. It maintains correct track tension under high-impact loads, abrasive soil, and continuous excavator duty cycles.
With over 20 years of undercarriage manufacturing experience, Dingtai holds ISO9001 and SGS certifications. Our documented quality system ensures consistent material traceability and dimensional accuracy.
We use 35MnB forged housing and deep-quenched piston components. Precision machining and hydraulic pressure testing deliver higher fatigue resistance and longer service intervals in demanding conditions.
Core Selling Points
- Global Brand Compatibility: Direct-fit replacement for Kobelco SK series and other major excavator models. Dimensions match OEM drawings for trouble-free installation and track alignment.
- Premium 35MnB Material: High-strength 35MnB steel and forged housing resist impact deformation, preserving track tension calibration under heavy digging and travel loads.
- Deep Quenching/Heat Treatment: Induction deep quenching on the piston rod and seating surfaces increases hardness to HRC 50-58, extending component life in abrasive environments.
- 100% QC Inspection: Every assembly undergoes dimensional checks, weld inspection, and hydraulic pressure testing before dispatch, ensuring zero-leak performance and verified stroke travel.
Our catalog of Kobelco Track Adjust Assembly includes various specifications, fully compatible with Kobelco SK200, SK210, SK230, SK250, SK330, SK350 and related excavator models.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged housing / high-strength alloy steel |
| Hardness | HRC 50-58 on piston rod and seating surfaces |
| Process | Precision machining, induction deep quenching, pressure testing |
| Certification | ISO9001, SGS |
| Warranty | 12 months or 2,000 hours, whichever comes first |
2. OEM & Customization
We match customer drawings or samples and manufacture track adjust assemblies to OEM specifications, including stroke length, mounting dimensions, and seal groove tolerances.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Hydraulic Excavator | Kobelco | SK200, SK210LC, SK230, SK250, SK330, SK350, SK480 |
| Hydraulic Excavator | Kobelco | SK135SR, SK140SR, SK160LC, SK170 |
4. Delivery & Logistics
We provide factory-direct pricing, flexible order quantities, and reliable export packaging. Shipments are arranged worldwide by sea or air with dealer-friendly mixed-model container loading.
Technical Features
The track adjust assembly uses a grease-driven piston and recoil spring mechanism. Grease injection extends the idler to control track sag, while the relief valve protects against overload pressure.
Deep-quenched seating surfaces and hardened chrome piston rods reduce wear and pitting. This maintains consistent tension calibration and prevents loss of track retention during high-impact operations.
Precision-machined seal grooves and high-pressure hydraulic testing verify zero-leak performance. The result is stable undercarriage tension in abrasive rock and heavy clay conditions.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Heavy Infrastructure
- Forestry
Frequently Asked Questions
What is the minimum order quantity for Kobelco track adjust assemblies?
Standard MOQ is 2 units per part number. Sample orders for one unit are accepted for testing and verification.
What is the delivery time?
Standard models ship within 15–25 days after deposit confirmation. Custom-machined orders require 25–35 days depending on specifications.
What material and heat treatment do you use?
Housing uses 35MnB forged steel. Piston rods and seating areas are induction deep-quenched to HRC 50–58 for wear resistance.
How do I confirm correct part number matching?
Send your OEM part number, machine model, or dimensional drawing. Our engineers verify compatibility and dimensions within 24 hours.
What warranty is provided?
We offer a 12-month or 2,000-hour warranty against material and manufacturing defects under normal operating conditions.
Do you support OEM and neutral packaging?
Yes. We provide OEM labeling, custom brand packaging, and neutral export packing according to customer requirements.
Can you produce from an old sample?
Yes. Reverse engineering from samples or detailed measurement reports is available for obsolete or discontinued Kobelco models.
Maintenance Guide
- Check track sag daily using OEM specifications. Adjust grease level until correct clearance is achieved; avoid over-tensioning.
- Inspect the adjust assembly for grease leakage, dents, or bent rods during routine service intervals.
- Use recommended grease only. Contaminated or incorrect grease damages seals and reduces cylinder service life.
- Release grease safely through the relief valve if track tension is excessive. Never disassemble under tension.
- Replace the assembly at first sign of pressure loss, visible cylinder damage, or uneven track tension.
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