Terex TW85 - Hydraulic System

3 Technical data
22 TW85
3.6 Hydraulic system
Hydraulic circuit 1: Work functions: Boom, dipperstick, bucket,
intermediate boom, rock breaker/auxiliary fitting
Axial piston variable capacity pump with flow
adjustment and pressure cut-off.
Flanged onto the flywheel side on throughdrive of
variable displacement pump.
Max. delivery rate: max. 142 l/min.
Max. pressure: max. 280 bar
Hydraulic circuit 2: Work functions: Slewing and all positioning functions
Pump component 1, 2 of dual gear pump flanged onto
the lateral power take-off (PTO).
Two-stage power switch at system pressure of 110 bar
Max. delivery rate: max. 26 + 40 l/min.
Max. pressure: max. 230 bar
Servo-operation Pressure tapping point on variable displacement pump
of travel drive
Max. pressure: approx. 35 bar
Brake system Pump component 2 of double gear pump
Max. delivery rate: max. 26 l/min.
Max. pressure: max. 150 bar
Actuation Hydraulic pilot-operated excavator valves for all
functions
Hydraulic cylinders Double-acting work cylinders, partially with end-position
damping.
Swing drive Hydrostatic with reduction gear and drive pinion on
internally toothed ring gear of swing bearing.
Swing range: 360° unlimited
Swing speed: 0-10 rpm
Hydraulic oil filter Suction strainer located in tank for hydraulic circuit
“travel”.
Return filter in tank for the work system.
Hydraulic oil cooler Thermostatically controlled
Operating range 50-45° C
Knickmatik Bend mechanism for the lateral parallel adjustment of
the boom axle at total digging depth to the right and left.
Lateral adjustment to the right: 990 mm
Lateral adjustment to the left: 870 mm