Contents

· 1  Performance comparison

· 2  Suitable applications

· 3  How to choose between wheels and tracks

· 4  Used machine inspection and sea freight

· 5  Frequently asked questions

· 6  Conclusion

For buyers in Morocco and other African markets, the main decision is whether mobility or ground grip contributes more to the work that the machine will perform most often.

Performance Comparison

The chassis system plays a role to some extent in determining the excavator's traction, stability, operating speed, road surface condition, transportation planning, and machine maintenance. The following section provides a comparative analysis of these aforementioned influencing factors.

Mobility and transport

A wheeled excavator can travel between nearby work areas on suitable roads, subject to local rules. This is useful when a project advances in short sections. A crawler moves slowly and normally needs a low-bed trailer for road transfers. Its transport requirement matters less when the machine will remain on one site for weeks.

Traction and ground pressure

Tracks spread machine weight over a larger contact area. A crawler therefore has the advantage on mud, loose fill, broken ground and slopes. Tyres concentrate the load over a smaller area and can lose grip sooner when the surface becomes soft. On compacted soil, asphalt or concrete, that difference is less important.

Stability while digging and lifting

A crawler has a long, wide base and normally feels more planted during heavy digging. A wheeled excavator uses axle locks, a blade or outriggers to create a stable working position. Its performance depends on firm ground and correct setup. Buyers planning lifting work should compare the load chart and working range of the exact configuration rather than rely on operating weight alone.

Travel speed and work cycle

The wheeled machine gains time when work includes repeated short transfers. The crawler gains time when it can stay in one location and use its traction continuously. Travel speed does not improve production if the ground is too soft for tyres. Extra traction does not improve production if the crew repeatedly waits for a trailer.

Surface protection

Rubber tyres usually cause less damage to asphalt, paving and established yards. Steel tracks can mark finished surfaces, especially when the machine pivots. A crawler may use rubber pads where surface protection is important, but this does not give it the same road mobility as a wheeled excavator.

Maintenance and operating cost

There is no reliable rule that one undercarriage is always cheaper. Fuel use changes with load, idle time, operator habits and mechanical condition. Crawler owners monitor chains, pins, bushings, rollers, idlers and sprockets. Wheeled-excavator owners monitor tyres, steering joints, axles, transmission and brakes. Actual cost depends on wear, local parts supply and the work being performed.

Suitable Applications