Crawler tractors in open cast coal mining – Liebherr PR 734 Litronic User Manual
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Liebherr crawlers and pipe layers
Crawler tractors in open cast coal mining
Uses of Liebherr large crawler tractors
In open cast coal mining, crawler tractors are used to loosen and displace excavated material in order to prepare
terrain for large excavators and to form and clean roadways.
Technical data
PR 754
PR 764
Operating weight
kg / lb 41,300 / 91,050 51,500 / 113,530
Engine power
kW
250
310
U-blade capacity
m³ / yd³
11.7 / 15.3
17.0 / 22.23
Width of track shoes
mm / in
710 / 28’’
710 / 28’’
High pull and pushing force
The friction-locked and infinitely varia-
ble hydrostatic travel drive give Liebherr
crawler tractors high pull and pushing
forces. This innovative drive system
enables simple and safe operation in all
work situations.
Outstanding levelling characteristics
Coal mining requires the regular laying
of track systems and conveyor belts.
The formation level required for the
“moving over” are very quickly created
by Liebherr crawler tractors.
Device configuration
Each Liebherr crawler tractor
can be individually configured. In
coal mines, crawlers are very of-
ten equipped with a U-blade, rear
ripper or counterweight and wide
track shoes.
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