Detail Information
| 40Mn2 40MnB 50Mn |
Finish | Smooth |
Colors | Black |
Technique | Forging / casting |
Surface Hardness | HRC52-58,deepth:8mm-12mm |
Warranty time | 1 year |
Certification | ISO9001 |
Delivery Time | Within 15 days after contract established |
Product Description
HD700/770 Excavator Track Top Carrier Roller Undercarriage Parts
for Construction Machinery
1. What Is top/carrier track ?
The track, located on the uppermost or carrier part of heavy equipment, serves a vital function: it bears weight, provides the necessary traction, and acts as a shock absorber. Routine maintenance of this track is crucial to guarantee its smooth functioning and extend its operational lifespan.

2. Advantages / Features
(1) An efficient internal circulation system has been introduced in our operations.
(2) The shaft is made from either top-notch round steel or superior forged steel.
(3) The floating oil seal, constructed from high-hardness and wear-resistant chrome-molybdenum alloy, is fortified by a resilient elastic rubber O-ring.
(4) The rail undergoes a process of depth quenching to bolster its durability and strength.
(5) Our company utilizes premium-quality bimetallic copper sleeves in our products.

3. Design/Structure

Model | A | B | C | D | E | General Model |
EC55/EX70 | 30 | 100 | | | | 柳工906/907/908,SWE70,全长150 |
HD250" | | 140 | | | | HD307,HD308" |
HD450" | | 160 | | | | HD400.HD510,HD512,HD55C |
HD700 | | 175 | | | 16*50粗 | HD770,HD800,HD820,HD900,HD1023 |
HD1250 | | | | | 24*70粗 | 四方头,HD1430,HD1250-7,座长162,宽85,厚88,总长342 |
HD1250-5 | | | | | 20*50粗 | 专用,座长206,宽70,厚26,总长285 |
4. why choose us?
We acknowledge that product quality is the cornerstone of an enterprise's success and growth, which is why we place significant emphasis on this aspect. From the meticulous selection of raw materials to precise product design, and finally to complete packaging, we adhere strictly to an internationally recognized production framework and implement comprehensive, multi-tiered quality control measures. This unwavering commitment to quality has earned our products a positive reputation in the market.
To Date, We Have Successfully Achieved ISO9001 International Quality Certification, Affirming That Our Quality Management System Aligns With International Advanced Standards. Moreover, We Have Also Obtained The ISO 14001 Environmental Management System Certificate, Further Showcasing Our Dedication And Accomplishments In Environmental Protection.
5. Manufacturing Processes

6. Hot Sale Products


7.Customer Feedback

8. FAQ
9.Contact Information
Whatapp: +8615880208980
Wechat : Susanruan13
Email : doozer@doozergroup.com