Tractor is a self propelled type of machine which is used for various types of jobs. It is used for pulling loads with the help of a tractive force. It works with a diesel engine and its horse power varies from 14 to 200 h.p.
Types of Tractor
These days the following two types of tractors are most commonly used:
(i) Wheel type tractor
(ii) Crawler type tractor
1. Wheel Type Tractor
The wheel type tractor has the pneumatic tyres. This is suitable for even and smooth type of ground. The wheel type tractors can be (a) Four Wheel Type (b) Two Wheel Type.
Advantages
These tractors have higher speed. These tractors can be moved on the pavements and roads without damaging the track. These are cheap and light.
Disadvantages
They are not suitable for uneven and rough grounds. They are not able to handle heavier jobs of digging and hauling. They have got the chances of slipping over the loose soil tracks.2. Crawler Type Tractor
It is known as crawler type tractor because it crawls or moves on an endless chain. This type of tractor is most commonly used in slippery, loose and muddy grounds.
Advantages
These tractors are capable of handling heavier jobs of digging and hauling. These tractors have no chances of slipping over the loose soil tracks and the slippery tracks.
Disadvantages
The speed of crawler type tractor is less than that of the wheel type tractors. The crawler type tractors are costlier. When the crawler type tractors move, they are likely to damage the tarred roads and pavements etc.How to make selection of a Tractor?
When we are making the selection of a tractor for a particular job, the following factors should be kept in view.
- The type of the job for which it is to be employed.
- The size of the tractor required.
- The selection of a tractor also depends upon the smoothness of the haul road.
- The selection of a tractor depends upon the slope of the hauling road.
- The length of the haul etc., are also considered while making the selection of a tractor.
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