Detail Information
| 40MnB |
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
EC210B Excavator Track Top Carrier Roller Undercarriage Parts
for Construction Machinery
1. What Is top/carrier track ?
The track, positioned on the uppermost or carrier section of heavy equipment, plays a crucial role: it supports weight, offers the necessary traction, and functions as a shock absorber. Regular maintenance of this track is essential to ensure its smooth operation and prolong its service life.

2. Advantages / Features
(1) We have implemented an efficient internal circulation system.
(2) The shaft is crafted from either premium round steel or high-quality forged steel.
(3) The floating oil seal, made of high-hardness and wear-resistant chrome-molybdenum alloy, is reinforced by a durable elastic rubber O-ring.
(4) The rail undergoes a depth quenching treatment to enhance its durability.
(5) Our company uses high-grade bimetallic copper sleeves.

3. Design/Structure

Model | A | B | C | D | E | General Model |
EC55/EX70 | 30 | 100 | | | | 柳工906/907/908,SWE70,全长150 |
| | | | | | 轴30,轴长31,卡链条位90,凸位110,凸位宽46,轮体宽100' |
EC210 | 58 | 161 | | | | VOLVO200,EC240,龙工200,龙工230 |
EC290 | 58 | | | | | R290,与PC300-5通用 |
EC360 | 58 | | | | | 轴长91+6(94粗),卡位158,轮体长202,中凸宽90" |
EC460 | 58 | | | | | "EC480,轴长100+21(94粗),卡位168,轮体长204,中凸宽95 |
4. why choose us?
We understand that product quality is the foundation of an enterprise's survival and growth, which is why we place great importance on this aspect. From the careful selection of raw materials to detailed product design, and finally to comprehensive packaging, we strictly adhere to an internationally advanced production framework and implement comprehensive, multi-layered quality control measures. This persistent pursuit of quality has garnered our products a favorable reputation in the market.
So far, we have successfully obtained ISO9001 international quality certification, which confirms that our quality management system meets international advanced standards. Furthermore, we have also acquired the ISO 14001 environmental management system certificate, further demonstrating our commitment and achievements 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