mecalac 12 MXT, Handbook

Page: 10 / 88

3.5.2 Equipment circuit:
- Variable displacement, axial piston pump:
• Cubic capacity: .............................................................................................................. 63 cm
3
• Maximum delivery: .................................................................................................... 140 l/min
- Associated functions by solenoid-operated valves:
• Low pressure: ............................................................................................................. ~ 35 bar
- Accelerator.
- Oscillation lock.
- Seat pivoting console safety device.
• High pressure: .......................................................................................................... ~ 280 bar
- Stabilizers.
- Tool unlocking.
- Offset.
- Combined SX14 “LUDV” valve block:
• Five elements of proportional Load Sensing function with individual balancing for each
element: boom, intermediate boom, dipper, bucket and auxiliary.
• One input element.
• One open-centre element for slewing with separate supply.
• Proportionality of the functions always complied with irrespective of each element’s pressure
level.
• Anti-cavitation pressure relief valve on each element.
• Hydraulical-assisted proportional function controls, by manipulators or foot-operated controls
supplied at low pressure with standby accumulator.
3.5.3 Slewing and hydrostatic steering circuit:
- Hydrostatic steering:
Double-acting ram controlled by a ORBITROL unit, protected by two anti-shock valves
• Fixed displacement gear pump:
- Cubic capacity: ........................................................................................................ 19 cm
3
- Maximum delivery: ............................................................................................. ~ 43 l/min
- Maximum pressure: ............................................................................................... 175 bar
- Slewing:
• Hydraulic motor: .................................................................................. MSE05 with brake F07
- Maximum pressure: ............................................................................................... 230 bar
- Cubic capacity: ...................................................................................................... 750 cm
3
• Slewing internal (balls) crown wheel with remote greasing.
• Rotation speed: .............................................................................................................. 8 rpm
- Hydraulic filtration:
• on return circuit for the equipment (10 µ ).
• on booster pump circuit for travel (10 µ ).
- Paint:
• Polyurethane paint: ................................................................................ Grey VOLVO 80BR3
• Polyurethane paint: .............................................................................. Yellow VOLVO 80BR3
• Solidifying agent: .............................................................................................................. DT6
• Thinner (diluent): ............................................................................................................. X400
- Basic mixture ratios: 100 parts color to 30 parts solidifying agent, with 5 to 15 % thinner
for total.
12MXT 28000
8 M1