Product Description
Made from premium materials including 50Mn, 40MnB, and 42MnB steel, these upper rollers feature advanced forging and casting processes to ensure high strength and wear resistance. The surface hardness reaches HRC52-58 with an effective hardening depth of 8mm-12mm, delivering extended service life even in harsh working environments.
Available in black or yellow painting finishes, our undercarriage rollers are supplied with smooth surface treatment and strict quality control. Each product comes with a one-year quality guarantee and meets ISO9001-9002 certified production standards.

Application
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- Caterpillar Excavators & Dozers: Designed for Caterpillar crawler equipment, providing reliable track support and smooth undercarriage operation.
- Construction Equipment: Suitable for heavy-duty earthmoving, excavation, and infrastructure projects requiring durable undercarriage components.
- Mining & Quarry Operations: Built for harsh working environments with excellent wear resistance and long service life.
- Undercarriage Replacement Parts: Manufactured with OEM mounting dimensions for accurate replacement and easy installation.
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OEM Custom Solutions: Available according to customer samples, drawings, and designs for customized undercarriage applications.
Features
- High Hardness Wear Resistance: Heat-treated surface with HRC52-58 hardness and 8mm-12mm hardened depth for excellent abrasion resistance and longer service life.
- Efficient Lubrication System: Advanced oil recycling system reduces friction and improves smooth operation under heavy-duty working conditions.
- Premium Bronze Bushings: High-quality bronze bushings enhance durability, reduce wear, and ensure stable performance.
- OEM Precise Fit: Manufactured according to OEM mounting dimensions for accurate installation on Caterpillar excavators and dozers.
- Strict Quality Control: Comprehensive hardness, dimension, and performance inspections ensure consistent product reliability.
- ISO9001 Certified Manufacturing: Produced under ISO9001:2008 quality standards with reliable production processes and stable performance.
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Custom OEM Production: Available according to customer samples, drawings, and designs to meet different undercarriage replacement requirements.
Product Parameters
| Product Name | Caterpillar excavator and dozer undercarriage spare parts carrier roller/upper roller/top roller |
| Production Standard | ITR production standard & OEM installment size |
| Material | 50Mn/40MnB/42MnB |
| Finish | Smooth |
| Painting Color | Black or yellow |
| Process | Forging & casting |
| Surface Hardness | HRC52-58, Depth:8mm-12mm |
| Quality Guarantee | One Year |
| Certification | ISO9001-9002 |
| Delivery Time | Within 10--20 days after advance contract establishment |
| Package | Fumigate seaworthy packing and Export Standard Package |
| Payment Term | TT, L/C, Paypal, Western union,D/P |
| Business Scope | excavator and dozer undercarriage parts, G.E.T, Hydraulic spare parts, underground engage tools, etc |
Why Choose us?
| Caterpillar | Excavator | E320,E320D,E320E,E323, E330,E330D, E336,E345DL, E349DL, E374, E395, E305.5, E308, E312, E315 |
| Caterpillar | Bulldozer | D3, D5H,D5M,D5N, D6,D6H,D6R,D6T,D6M,D6N, D7, D7G,D7H,D7R,D8,D8N,D8R,D8T, D9, D9R,D9N,D9T,D10N,D10T, D11N,D11T |
| Caterpillar | Motor Grader | 120, 140, 160, 18, 24 |
| Komatsu | Excavator | PC55, PC70, PC130, PC200, PC220, PC240, PC300, PC350, PC400, PC450, PC650, PC800, PC1250 |
| Komatsu | Bulldozer | D20,D31, D37, D51, D61, D65EX-12,D65PX-15, D85EX-15EO, D85ESS-2A,D155AX-6, D275, D375, D475, D575 |
| Komatsu | Wheel Loader | WA100, WA150, WA200, WA250, WA320, WA380, WA430, WA470, WA500, WA600, WA800, WA900 |
| Komatsu | Motor Grader | GD405, GD555, GD655, GD675, GD755, GD825 |
| Hitachi | Excavator | ZX55, ZX70, ZX120, ZX130, ZX200, ZX210, ZX240, ZX250, ZX330, ZX350, ZX470, ZX670, ZX870, ZX1200,EX200,EX300,EX400 |
| JCB | Backhoe Loader | 1CX, 2CX, 3CX, 4CX, 5CX |
| JCB | Excavator | JS130, JS145, JS160, JS200, JS220, JS235, JS300, JS330, JS370, JS460 |
| Kobelco | Excavator | SK55, SK75, SK130, SK140, SK170, SK200, SK210, SK210LC-8,SK220, SK250, SK260, SK300, SK330, SK350, SK480, SK500, SK850 |
| Hyundai | Excavator | R55, R80, R110, R140, R160, R180, R210, R220, R250, R290, R300, R330, R360, R380, R430, R480, R520, R800 |
| Shantui | Bulldozer | SD08, SD13, SD16, SD22, SD23, SD32, SD42, SD52, SD90 |
| Shantui | Excavator | SE60, SE75, SE135, SE150, SE210, SE215, SE220, SE240, SE260, SE335, SE370, SE470, SE500 |
| Doosan | Excavator | DX55, DX60, DX80, DX140, DX150, DX170, DX200, DX225, DX235, DX255, DX300, DX340, DX350, DX380, DX420, DX480, DX520, DX530, DX700, DX800 |
| New Holland | Excavator | E18, E26, E33, E37, E55, E60, E75, E135, E145, E175, E215, E230, E260, E305, E335, E385, E485 |
| Daewoo | Excavator | DH55, DH60, DH80, DH130, DH150, DH170, DH200, DH220, DH225, DH258, DH280, DH300, DH320, DH360, DH370, DH420, DH500 |
FAQ
Q1: What materials are used for your excavator rock buckets?
A: Our rock buckets are made from high-strength wear-resistant steel, providing excellent durability, impact resistance, and long service life in tough working conditions.
Q2: Can you customize rock buckets according to different excavator models?
A: Yes, we provide OEM customization services based on excavator models, working conditions, bucket size, capacity, and customer requirements.
Q3: What excavators are your rock buckets compatible with?
A: Our rock buckets are suitable for various excavator brands, including Caterpillar, Komatsu, Volvo, Hitachi, Hyundai, and more. Custom solutions are also available.
Q4: What applications are your rock buckets used for?
A: They are widely used in mining, quarrying, construction, and heavy-duty excavation for handling rocks, gravel, ores, and other abrasive materials.
Q5: How do you ensure rock bucket quality?
A: We control quality through strict material inspection, precision manufacturing, and welding checks to ensure reliable performance and long service life.















