“Four Wheels and One Belt” complete undercarriage system
Includes drive tumbler, idlers, rollers, and track shoes
Designed for rope shovel performance and long service life
Built for heavy-duty mining environments
1. Drive Tumbler (Sprocket)
The drive tumbler is the heart of the undercarriage system. It engages directly with the track links to transmit torque from the powertrain to the tracks, propelling the machine forward or backward. Our drive tumblers are forged from high-strength alloy steel and treated with advanced heat processes such as induction hardening to deliver maximum wear resistance and impact toughness. The precision-machined tooth profile ensures smooth engagement, reducing link wear and extending service life.
Key Features
Precision-forged steel construction with hardened tooth surfaces
Optimal tooth geometry for smooth power transfer
Available in single- or split-segment design for easier servicing
2. Front Idler (Tensioning Wheel)
Located at the front of the undercarriage, the front idler serves two critical functions: guiding the track and maintaining proper tension. Our idlers are cast from solid steel and finished with high-precision machining to ensure concentricity and surface integrity. Each idler integrates an internal automatic tensioning system that provides consistent tension, reducing the risk of derailment and improving track alignment.
Key Features
High-durability materials with superior wear resistance
Sealed bearing assemblies for long-term operation in harsh conditions
Automatic tensioning mechanism for simplified maintenance
3. Rear Idler (Optional in Some Models)
The rear idler enhances track alignment and stability, particularly in larger or heavy-duty rope shovel models. Engineered for lateral load capacity, it plays an important role in maintaining straight-line tracking under severe operational stresses. Our rear idlers feature a dual-guide structure and are built to absorb both axial and radial forces during machine maneuvering.
Key Features
Reinforced rib design for increased structural rigidity
Dual-seal bearing system to resist contamination
Ground guide surface to ensure straight-line travel
4. Lower Roller (Track Roller)
Track rollers support the entire weight of the shovel and maintain consistent contact between the track and the ground. Our rollers are manufactured with an integrated forged body and shaft design, delivering superior strength and durability. Multi-layer sealing protects internal components from dust, mud, and water ingress, making them ideal for high-impact, abrasive environments such as mining and tunneling.
Key Features
Load-rated for extreme working conditions
Self-lubricating design reduces downtime and maintenance
Highly reliable seal system extends operational life
5. Track Pad (Crawler Shoe)
Track pads directly contact the ground and provide traction, stability, and load distribution. We offer single, double, and triple grouser designs, as well as anti-slip options, to suit different terrains. Made from high-manganese or alloy steel, each pad is heat-treated for high strength, fatigue resistance, and long service life.
Key Features
Multiple pad designs for varied ground conditions
High-toughness steel for strong impact resistance
Anti-slip design for slopes and soft terrain
6. Crawler Frame – Structural Backbone of the Undercarriage
The crawler frame is the main load-bearing structure of the undercarriage system. It supports and connects all key components, including the drive tumbler, idlers, rollers, and track shoes, while carrying heavy operational and dynamic loads. Built from high-strength, low-alloy steel, each frame is precision welded and stress-relieved for superior strength and long-term reliability.
Optimized reinforcement zones and load paths improve resistance to torsion, bending, and fatigue. Machined contact surfaces ensure accurate fit, smooth track movement, and even load distribution.
Key Features
High-Strength Steel Structure for extreme mining conditions
Precision-Machined Interfaces for accurate assembly and reduced wear
Stress-Relieved Welding to enhance fatigue and crack resistance
Custom Options Available to match OEM models and special requirements
| Electric Shovel | |||
| TZCO | Hitachi | Liebherr | Caterpillar |
| WK-12 | EX2500/EX2600 | R9200 | CAT7395 |
| WK-20 | EX3600 | R9400 | CAT6030 |
| WK-35 | EX5500/EX5600 | R9600 | CAT7495HD/HR |
| WK-55 | EX8000 | R9800 | CAT6040 |
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