Nan'an Zhongte Engineering Machinery Factory
| Payment Terms | L/C,T/T |
| Supply Ability | 10000PCS/Months |
| Delivery Time | 7-15Days |
| Packaging Details | Standard Export Packaging |
| Function | Supports and guides the track chain |
| Specifiion | 100% new |
| Keyword | Undercarriage Parts |
| Surface Hardness | HRC52-58 |
| Dimension | Standard |
| Collor | Black Yellow And Customer Required |
| Technique | Casting And Heat Treatment |
| Trademark | OEM |
| Diameter | Varies by model, typically 200-400 mm |
| Features | Durable |
| Color | Usually black or metallic |
| Brand Name | ZTMC |
| Model Number | PC70-7 PC75UU-2 PC78US-6 |
| Certification | ISO9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,T/T | Supply Ability | 10000PCS/Months |
| Delivery Time | 7-15Days | Packaging Details | Standard Export Packaging |
| Function | Supports and guides the track chain | Specifiion | 100% new |
| Keyword | Undercarriage Parts | Surface Hardness | HRC52-58 |
| Dimension | Standard | Collor | Black Yellow And Customer Required |
| Technique | Casting And Heat Treatment | Trademark | OEM |
| Diameter | Varies by model, typically 200-400 mm | Features | Durable |
| Color | Usually black or metallic | Brand Name | ZTMC |
| Model Number | PC70-7 PC75UU-2 PC78US-6 | Certification | ISO9001 |
| Place of Origin | CHINA |
PC70-7 PC75UU-2 PC78US-6 Top Roller | OEM Replacement, Part No.20T-30-00050
This heavy-duty carrier top roller is a 1:1 OEM direct replacement for PC70-7, PC75UU-2 and PC78US-6 mini excavators, with standard OEM part number 20T-30-00050. Perfectly matching original mounting dimensions and bolt holes, it requires no cutting, drilling or any on-site modification. It effectively supports track operation, avoids track sagging and vibration, and optimizes undercarriage running performance for long-working mini excavator fleets.
PC70-7, PC75UU-2 and PC78US-6 mini excavators are widely used in municipal renovation, indoor demolition, garden construction and small earthmoving projects. Frequent steering operation, long-term muddy ground contact and continuous gravel friction bring heavy load to undercarriage parts. This matched top roller is professionally designed for mini excavator compact structure and frequent start-stop working mode, keeping stable working performance in various complex working scenarios.
Adopt high-strength one-piece forging steel blank to enhance overall structural stability and impact resistance. Dual standard heat treatment is adopted: integral quenching improves surface hardness for long-term abrasion resistance; tempering eliminates internal metal residual stress to keep complete structural toughness. All mounting holes and matching surfaces are processed by high-precision CNC equipment, with machining tolerance strictly controlled within 0.01mm, fully fitting original factory installation standards.
A Southeast Asian equipment rental company owns multiple PC70-7, PC75UU-2 and PC78US-6 mini excavator fleets. After equipped with our OEM-spec top rollers, all undercarriage parts keep stable operation over 1800 working hours with good sealing performance and intact roller shell, cutting annual undercarriage maintenance expenditure by 35%.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2015
Total Annual:
5000000-8000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Nanan Zhongte Construction Machinery Factory is located in Quanzhou, Fujian Province, China — a city recognized by UNESCO as the starting point of the ancient Maritime Silk Road and also a vibrant metropolis with an economic output exceeding one trillion yuan. As a large enterprise specializin... Nanan Zhongte Construction Machinery Factory is located in Quanzhou, Fujian Province, China — a city recognized by UNESCO as the starting point of the ancient Maritime Silk Road and also a vibrant metropolis with an economic output exceeding one trillion yuan. As a large enterprise specializin...
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