The Kobelco SK220-10 Excavator Top Roller 56mm Shaft is a heavy-duty undercarriage component specifically engineered to support upper track movement and maintain proper track chain tension. Designed to withstand severe abrasion and high vertical loads, this precision-crafted component guarantees smooth operation across harsh construction and mining environments.
The Kobelco SK220-10 excavator top roller is built to rigorous OEM standards to ensure perfect interchangeability and structural reliability. Featuring reinforced alloy steel construction and advanced seal design, this heavy-duty undercarriage part minimizes frictional resistance and prevents track misalignment under extreme working conditions.
| Specification Parameter | Value / Technical Detail |
| Applicable Model | Kobelco SK220-10 |
| Shaft Diameter | 56mm (Heavy-Duty Reinforced) |
| Material Composition | Premium Forged 40Mn2 / 50Mn Alloy Steel |
| Surface Hardness | HRC 52–58 (Induction Hardened) |
| Hardness Depth | 8mm – 12mm Deep Induction Zone |
| Seal Type | Dual-Cone Floating Seals (100% Anti-Leakage) |
| Lubrication System | Synthetic Extreme-Pressure Heavy Gear Oil |
By combining precise physical dimensions with high-grade metallurgical treatments, this roller delivers optimal structural strength and long-term operating efficiency. Fleet managers and heavy equipment operators can rely on its dimensional accuracy for fast, hassle-free field installation.
GFM combines specialized thermal processing with flexible factory fulfillment to deliver superior top roller excavator parts for global distribution.
Flexible Customization & Low MOQ: We support complete OEM/ODM production based on client drawings or samples, offering adaptable MOQ policies for trial orders.
Rapid Delivery & High Capacity: Modern automated production lines allow a monthly capacity of 30,000 units and standard delivery within 15–20 days.
30% Extended Wear Life: Deep-frequency induction quenching creates an ultra-hard outer shell while preserving core ductility for high impact resistance.
All-Terrain Heavy-Duty Performance: Built to resist quartz dust, severe impacts, and liquid slurry contamination in mining, demolition, and mud operations.
These commercial and technical advantages make GFM rollers the preferred choice for equipment dealers and contractors seeking lower operational costs and extended component lifespans.
At GFM Factory, our carrier rollers are built to optimize your machinery’s performance, ensuring smoother track operations and extended equipment life.

GFM operates as a full-service supplier, allowing global distributors to consolidate their procurement processes easily. We supply an extensive range of robust undercarriage components to fit diverse operational needs.
Our comprehensive product catalog includes:
Track rollers, carrier rollers, idlers, and sprockets
Track shoes, track chains, and complete track link assemblies
Heavy-duty excavating buckets and high-tensile bucket tooth pins
Track bolts, hardened nuts, specialized pins, and wear-resistant bushings
Our versatile engineering designs ensure seamless structural compatibility across all mainstream international equipment brands. We proudly supply reliable replacements for Komatsu, Hitachi, Caterpillar, Volvo, Kobelco, Daewoo, Doosan, Hyundai, Kubota, Bobcat, Yanmar, Sany, Liugong, XCMG, and Shantui.



Every excavator top roller manufactured by GFM undergoes rigorous multi-stage testing before leaving our warehouse facility.
100% Spectrometric Testing: Verifies exact chemical proportions of carbon, manganese, and chromium alloys prior to forging.
Ultrasonic Flaw Detection: Ensures internal forging density, completely eliminating hidden air pockets or structural micro-cracks.
Pressure Leakage Testing: Validates seal integrity under high pressure to guarantee zero oil leakage during field operation.
With full quality control across every production stage, GFM guarantees that each component meets or exceeds original equipment specifications. All top rollers come with a comprehensive quality warranty of 1 year or 2,000 operating hours.
As an experienced undercarriage machinery manufacturer established in 2011, GFM specializes in producing durable top roller excavator assemblies and complete bottom roller components for large-volume global procurement orders.
Advanced Production Infrastructure: Equipped with high-precision CNC machining centers, heavy forging presses, and continuous automated heat-treatment furnace systems.
Comprehensive Undercarriage Range: Manufactures track rollers, carrier rollers, idlers, sprockets, track shoes, track chains, track link assemblies, buckets, bucket tooth pins, bolts, nuts, pins, and bushings.
Global Brand Compatibility: Engineered for seamless compatibility with Caterpillar, Komatsu, Hitachi, Volvo, Kobelco, Daewoo, Doosan, Hyundai, Kubota, Bobcat, Yanmar, Sany, Liugong, XCMG, and Shantui.
By integrating complete in-house manufacturing with strict ISO quality standards, GFM empowers heavy equipment dealers and distributors with durable replacement solutions. Contact GFM today to request an instant quote and claim your free product samples!