Our Komatsu track adjust assembly is the hydraulic tensioning cylinder that maintains correct track sag, absorbing shock loads within the undercarriage system.
As a factory-direct manufacturer, we supply complete OEM assemblies with no intermediary, offering rigorous quality at competitive global pricing.
A robust adjuster prevents sudden track detracking, sprocket jumping, and premature pin/bushing wear—eliminating unscheduled site downtime.
Dingtai brings 20+ years of undercarriage expertise, validated by ISO9001 quality management and SGS material certifications on every shipment.
We forge cylinders from 35MnB steel and apply deep harden-quench treatment, delivering surface hardness above 50 HRC for extreme impact resistance.
Core Advantages
- Global Brand Compatibility: Engineered to fit Komatsu excavator and bulldozer models directly, matching OEM mount centers, stroke length, and port thread specifications.
- Premium 35MnB Material: Cylinder barrel and end cap are hot-forged from high-tensile 35MnB alloy, dramatically raising burst pressure and fatigue life over standard steel.
- Deep Quenching & Precision Heat Treat: Full-length induction hardening achieves a uniform case depth of 2–3 mm, producing a tough core with a wear-resistant hardened surface.
- ISO9001/SGS Certified: Every production batch undergoes dimensional inspection, pressure testing, and seal integrity checks under our ISO9001 audited quality system with SGS traceable reports.
Our catalog of Komatsu Track Adjust Assembly includes various specifications, fully compatible with Komatsu excavators and bulldozers.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB forged steel (cylinder & end cap) |
| Surface Hardness | 50–55 HRC after deep quenching |
| Process | Hot forging → rough machining → induction hardening → precision grinding → assembly & pressure test |
| Certification | ISO9001:2015, SGS material report |
| Warranty | 12 months against manufacturing defects |
2. OEM & Customization
We precisely match your drawings or OEM sample, offering custom stroke lengths, mounting brackets, and sealing systems while strictly adhering to fit, form, and function standards.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Excavator | Komatsu | PC200, PC220, PC300, PC360, PC400 |
| Bulldozer | Komatsu | D65, D85, D155, D275, D375 |
4. Delivery & Logistics
We ship factory-direct with reliable freight forwarders, supported by flexible MOQ starting from 1 unit and competitive ex-works pricing for trial orders.
Technical Features
The body is forged in a single piece from 35MnB alloy, then deep quenched to create a hardened outer layer that resists abrasive wear while maintaining a ductile core to absorb side impacts without cracking.
Double-lip polyurethane wiper seals combined with a high-pressure polyurethane U-cup retain grease permanently; this design eliminates bypass leakage, ensuring constant track tension even under extreme vibration.
A nitrided piston rod and honed cylinder bore minimize friction and prevent scoring, which significantly extends service intervals and allows smooth recoil action when the idler retracts.
Applications
- Mining extraction and material handling
- Heavy earthmoving and road construction
- Quarry and aggregate processing
- Forestry and land clearing
- Demolition and scrap recycling
Frequently Asked Questions
- What is the minimum order quantity (MOQ)?
- MOQ is 1 unit for trial orders; larger volumes receive quantity breaks.
- How long does delivery take?
- Standard production lead time is 15–25 days; express shipping can deliver within 7–10 days once ready.
- What is the heat treatment depth on the cylinder?
- Typical effective case depth is 2.0–3.0 mm after induction hardening, achieving 50 HRC min.
- Do you provide warranty?
- We offer a 12-month warranty covering material and workmanship defects under normal operating conditions.
- Can you match a specific Komatsu part number?
- Yes. Provide the OEM part number or sample, and we will cross-reference dimensions and produce an exact fit replacement.
- How do I know if my adjuster needs replacement?
- Constant grease leaks, inability to hold track tension, or a bent/cracked cylinder body indicate replacement is needed.
Maintenance Guide
- Check track sag regularly: Measure the clearance between the track shoe and middle roller; adjust grease pressure until sag meets Komatsu specification.
- Purge old grease: Open the relief valve while applying tension, forcing out contaminated grease and refilling with fresh, lithium-based EP2 grease.
- Inspect seal area: Look for wetness or caked debris around the piston rod; any visible grease film indicates seal replacement time.
- Replace before catastrophic failure: If the cylinder bore is scored or the body shows visible deformation, install a new assembly to avoid sudden track disengagement.