Track Adjusters
Recoil and tension assemblies that maintain correct track sag and protect the undercarriage from shock loads. A critical system component often overlooked until it fails.
System Components
Tension and recoil — two functions, one assembly.
Grease-Type Track Adjuster
Hydraulic tension setting + recoil
The standard configuration for most mining and construction applications. A grease-charged hydraulic cylinder applies force to the idler yoke, setting and maintaining track tension. Tension is adjusted in the field by adding or releasing grease through a service port — no disassembly required.
Recoil Spring Assembly
Shock absorption + overload protection
The pre-loaded recoil spring works in series with the tension cylinder to absorb impact loads generated by ground obstacles and hard material. When the track encounters a sudden shock load, the spring compresses to protect the final drive, sprocket, and track links from peak stress transfer.
Engineering Details
Cylinder Construction
Grease-charged cylinder with precision-honed bore and hardened piston rod. Seal system designed for resistance to contaminated environments including clay, coal fines, and abrasive slurry.
Spring Pre-Load
Recoil spring pre-loaded to OEM-specified compression values. Pre-load determines the threshold at which the assembly absorbs shock rather than transmitting it to the undercarriage structure.
Idler Yoke Interface
Yoke geometry machined to match OEM front idler shaft dimensions. Correct yoke alignment ensures uniform load distribution across the idler bearing, extending bearing and seal service life.
Seal System
Multi-lip seal configuration at the cylinder rod to prevent grease loss under operating pressure. External seal protects against ingress of fine abrasive material at the sliding interface.
Tension Range
Track sag specification is equipment and terrain dependent. Correct tension prevents track derailment on soft ground and reduces pin-bushing wear from excessive slack. KSS adjusters are specified to OEM tension range requirements.
Compatibility
Engineered for direct fitment to Komatsu and Caterpillar bulldozers across their respective D-series platforms. Contact your authorized service provider for model-specific cylinder dimensions and spring rates.
Field Context
Incorrect tension accelerates the entire undercarriage.
Track tension has a direct relationship with undercarriage wear rate. A track that is too tight generates excess tension in the pin-bushing interface, increasing wear force and heat. A track that is too slack allows the links to slap against the sprocket and rollers, creating impact loading that damages seals and shortens component life.
The track adjuster is the only mechanism that controls this variable in the field. A worn or leaking adjuster means the operator loses the ability to hold correct tension — and the entire undercarriage begins wearing faster as a result.
KSS track adjusters are specified to maintain tension within the OEM-recommended range across the full service interval, with seal systems designed to resist the grease loss that typically causes premature adjuster failure in abrasive conditions.
Verify adjuster compatibility with your equipment.
Cylinder bore, stroke, and spring rate are equipment-specific. Contact our authorized service provider for model fitment and specifications.