BONOVO Undercarriage Parts Track Adjuster Assy Track Tensioner

Short Description:

Track adjuster or tensioner also called track adjuster cylinder which is used onto excavators and bulldozers. Bonovo Track adjusters are available for all brands and models of excavators, Hitachi, Komatsu, Caterpillar and other types of excavator crawler regulators at competitive prices. A track adjuster assembly consists of a recoil spring, cylinder and a yoke.

Product Detail



Product Tags

Product Information:

Material 60Si2MnA,60Si2CrA,60Si2CrVA
Wire diameter 5mm~80mm
Free hight 10mm~1188mm
hardness 45HRC~55HRC
Direction of coils Right, left
No.of coils Unlimited
Application Excavator, digger machine,car,train,shakeout machine,etc.
Color Blackwhite,blue,red,yellow,grey,etc.
Production method Hot formed.cold formed
Note The materials and specifications can be dedided by the customers.

Manufacturing/Structure Drawings

Components: a complete track adjuster assembly/spring recoil assy, or someone call it idler adjuster consisting of those components as following


Popular Models:

  • Komatsu: PC55、PC60、PC120、PC130、PC200-6、PC200-7、PC220-6、PC220-7、PC300-6、PC300-7、PC400、D31PX-21
  • Hitachi: ZX120、ZX200、ZX200-3
  • Kobelco: SK120-3、SK200
  • Caterpillar: CAT320D
  • YANMAR: B15

Product details


  • Tensioner for construction machine also could be called Recoil Spring Assembly.
  • It is consist of hydraulic system, recoil spring and connection parts.
  • Exclusive seal group ensure no oil leakaging, providing a stable status of hydraulic system for any working conditions.
  • The application of automatic in furnace roll-over device in roller hearth electric furnace can make the burning of material well-proportioned, as a result the finished spring performs more stable.


Testing: we have strict quality standard and we follow strict SOP to proceed quality inspection

Check Your Track Tension Regularly

Operate the machine for at least a half hour to allow the track to acclimate to the working area before you check and set the track tension. If conditions change, like additional rainfall, readjust the tension. Tension should always be adjusted in the working area. Loose tension causes whipping at higher speeds, resulting in excessive bushing and sprocket wear. If the track is too tight, it causes stress on the undercarriage and drive train components while wasting horsepower.

Incorrect track tension may lead to increased  wear, so it is important to adhere to the proper tension. As a general rule, when your operators are working in soft, muddy conditions, it is recommended to run the tracks slightly looser.

"If steel tracks are too tight or too loose, it can quickly accelerate wear,”  “A loose track could cause the tracks to de-track."

track adjuster

Buying Procedures


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  • certificate OEM Transaction process

    Q:Are you a manufacturer?
    A:Yes! We are the manufacturer established in 2006. We do OEM manufacture service of all excavator attachments and undercarriage parts for famous brand like CAT, Komatsu and their dealers all over the world, such as Excavator/Loader Buckets, Extend Boom & Arm, Quick Couplers, Rippers, Amphibious Pontoons, etc.Bonovo Undercarriage Parts offered a wide range of undercarriage wear parts for excavators and dozers. Such as track roller,carrier roller,idler,sprocket,track link,track shoe,etc.

    Q:Why choose BONOVO over any other companies?
    A:We manufacture our products locally. Our customer service is exceptional and personalized for every customer. Every BONOVO product is armored and durable with a 12-month structural warranty. We use high quality materials sourced from the very best in China. Our design team works closely with customers for any custom orders.

    Q:Which payment terms can we accept?
    A:Normally we can work on T/T or L/C terms, sometimes DP term.
    1). on T/T term, 30% advance payment is required and 70% balance shall be settled before shipment.
    2). On L/C term, a 100% irrevocable L/C without “soft clauses” can be accepted. Please contact directly with our customer representatives for specific payment term.

    Q:What logistics way for product delivery?
    A:1).90% in shipment by sea, to all main continents such as South America, Middle East, Africa, Oceania and Europe, etc.
    2). For neighborhood countries of China, including Russia, Mongolia, Uzbekistan etc., we can ship by road or railway.
    3). For light parts in urgent need, we can deliver in international courier service, including DHL, TNT, UPS or FedEx.

    Q:What are your warranty terms?
    A:We provide a 12-month or 2000 working hours structural warranty on all our products, except failure caused by improper installation, operation or maintenance, accident, damage, misuse or non Bonovo modification and normal wear.

    Q:What is your lead time?
    A:We aim to provide customers with a fast lead time. We understand emergencies happen and priority production should be preferred in a faster turnaround. A stock order lead time is 3-5 working days, while custom orders within 1-2 weeks. Contact BONOVO products so we can provide an accurate lead time basing on situations.


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