Undercarriage & Track Systems
Track types, tension adjustment, idler wheels, track shoe wear, derailment causes, and undercarriage measurement.
- Identify track types including sealed and lubricated chain systems
- Explain track tension adjustment and front idler function
- Describe undercarriage wear measurement including diameter and pitch
- Identify derailment causes and prevention methods
Leçon 1
Track Types & Undercarriage Components
Sealed and Lubricated Track Chain
The undercarriage system that uses individual track pads connected by pins is the sealed and lubricated track chain. Each link is connected by a pin and bushing that is sealed to retain internal lubricant and keep out abrasive material. This extends component life significantly compared to dry track chains.
Undercarriage Components
The undercarriage consists of track chains, track shoes, sprockets, front idlers, rear idlers, top and bottom rollers, and the track frame. Each component wears over time and must be inspected and measured regularly.
Track Shoe Types
Track shoes come in various widths and designs for different applications. Wider shoes provide lower ground pressure for soft soil. Narrower shoes work better on hard, rocky surfaces. Grouser height and pattern affect traction. Selecting the right shoe for the application reduces wear and improves performance.
Undercarriage Cost
The undercarriage can account for up to 50% of total maintenance costs on tracked equipment. Proper tension, alignment, and cleaning are the best ways to control these costs.
The sealed and lubricated track chain uses pins connecting individual pads with internal lubrication. Undercarriage can be up to 50% of maintenance costs - proper care is essential.