Boom Re circulation System - Pressurized oil is efficiently recirculated in the boom circuit, assisted by the boom self-weight when the boom lowers.This design delivers more pressurized oil to the arm from the pump to increase arm lowering speed in combined operation of the boom and arm.
- Combined Operation of Boom and Arm - In combined operation of swing + boom lower + arm roll-out, or in leveling (boom lower + arm roll-out), arm rollout speed can be increased greatly. A variable throttle, provided in the arm circuit, adjusts the oil flow in combined operation with arm roll-out.
- Boom- and Swing-Priority Modes - The boom- or swing-priority mode can be selected for higher production.
- Swing-Priority Mode - When swing angle is large in a cycle of digging, swinging and dumping, swing speed increases to reduce a cycle time.
- Three work modes can be selected by setting the switch to the three positions below.
- Position 1: Boom-priority mode
- Position 2: Normal mode
- Position 3: Swing-priority mode
- Boom Mode Selector - The two boom modes, comfort and powerful modes, can be selected according to job needs, extending the service life of the machine. When the boom mode selector is On, the comfort mode is selected for efficient excavation, while the selector is Off, the powerful mode for productive excavation.
- Increased Boom Lifting Force - The boom lifting force is increased to easily lift large rocks on quarries and mines.
- Traction force: - Approximately 14% increase - (vs. conventional model)
- Swing torque: - Approximately 8% increase - (vs. conventional model)
Note: Specifications given are for general guidelines only. Please contact us for updates, if required.