Product Details
Detail Information
| 40Mn2 40MnB 50Mn |
Finish | Smooth |
Colors | yellow |
Technique | Forging / casting |
Surface Hardness | HRC52-58,deepth:8mm-12mm |
Warranty time | 1 year |
Certification | ISO9001 |
Delivery Time | Within 15 days after contract established |

Model | A | B | C | D | E | General Model |
SH200/280 | | 175 | | | 20*50粗 | 全系列一样,SH210-5/240-5 A1A2A3,SH220,CASE凯斯200-240通用 |
SH300" | | | 60 | | 16*50粗 | JCB300 |
SH300A3 | | | 55 | | 20*55粗 | 常用,SH350.SH330" |
SH350" | | | 45 | | 16*50粗 | CASE凯斯350 |
SH450 | | | 45 | | 20*70粗 | |
Product Description
SH350 50*152 60*160 Bulldozer Top Carrier Roller Undercarriage Parts
for Construction Machinery
1. What Is top/carrier track ?
The Upper Roller is essential in supporting the track, ensuring adequate tension for the machine's efficient and stable operation. Constructed from specialized steel and produced through advanced techniques, this component undergoes rigorous quality control checks at each stage of production to guarantee strong resistance to both compressive and tensile forces.

2. Advantages / Features
The carrier sprocket body is meticulously crafted from high-quality materials such as 40Mn2, 40MnB, and 50Mn, which are carefully chosen to accommodate the diverse demands of various operational settings. The wheel body undergoes a precisely outlined sequence of forging and normalization, followed by an advanced spray heating and quenching process. This thorough methodology ensures that the tread surface achieves a hardness range of HRC52 to HRC62, with a hardened layer depth of 7-10mm (exhibiting a hardness of HRC45) or greater.

Engineered to endure both tropical and cold environments, the product features top-notch standard floating oil seals and a dependable lubrication system. This ensures that the carrier sprocket stays fully enclosed and maintenance-free, even when subjected to severe operating conditions or extreme temperatures spanning from -45°C to 120°C.

4. why choose us?
(1) Our company possesses a large-scale processing facility and a roomy 1,400 square meter warehouse stocked with a diverse array of products. We assure you of our superior quality and stand ready to fulfill all your requirements.
(2) We provide a comprehensive service bundle that includes purchasing support and container loading services, ensuring efficient procurement at competitive costs and prompt attention to your inquiries.

(3) We guarantee timely deliveries by leveraging our swift responsiveness, expedited shipping options, and a robust inventory management system.
(4) Our after-sales service offers tailored support. In case of warranty issues like oil leakage or wheel fracture, you can submit a photo featuring the company logo for immediate replacement, ensuring your utmost satisfaction.


















Whatapp: +8615880208980
Wechat : Susanruan13
Email : doozer@doozergroup.com
Company Profile
Xiamen Doozer Industries Co., Ltd. is a leading supplier of
high-quality undercarriage parts for excavators and bulldozers in
China. .With over 16 years of experience, our brand DZR is widely
recognized for its superior quality and excellent service.
We boast extensive expertise in OEM and After Markets for various
construction machinery, including PC1250, EX1000, D9N,D11N, D475,
EC950,and other models. Our specialty lies in offering a diverse
range of crawler-type undercarriage and correlated replacement
parts such as track rollers, carrier rollers, idler assemblies,
recoil spring assemblies, track link assemblies, track shoes,
sprockets, segments, excavator buckets, bucket teeth & adaptors,
cutting edges, end bits, excavator boom arms/sticks, bucket pins &
bushes, bolts, and nuts for excavators and bulldozers.
Our products are compatible with most major makes such as
Caterpillar, Komatsu, Hitachi, Kobelco, JCB, Volvo, Kato, Daewoo,
Doosan, Hyundai, Samsung, and more. We export a majority of our
products to Europe, Southeast Asia, Middle East, South America, and
other regions.
Our motto "Quality First" reflects our commitment to continuously
improving our production techniques, ensuring that we provide
better products at competitive prices. We welcome customers from
all over the world to consult with us and visit our company to
create mutual benefit and a successful business relationship
together.
We believe that our experience, quality products, and excellent
customer service will make us your best partner for construction
machinery parts.