Jaco® assistive robot User guide
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Lift arm specifications
This section describes dimensions and specifications of the lift arm.
• Weight: 5.6 kg (12.3 lbs)
• Dimensions (including mounting clamps): 500mm x 116mm x 164mm
• Control box dimensions: 115mm x 95mm x 55mm
• Swing-away mechanism maximum angle: no limit other than running into the wheels or side of
the wheelchair, depending on the setup and wheelchair
• Maximum tilt forward angle: 64°
• Maximum tilt backward angle: 3°
• Maximum Duty cycle: 10% (operation for 2 minutes maximum in every 20 minute period)
• Electrical rating: 24V, max 2.7A
Weight and dimensions are for the lift arm alone and do not include Jaco.
for maximum allowable payload.
Lift arm components
This section describes the main components of the lift arm.
The lift arm system consists of the lift arm itself, a control box, and push-button controls.
The lift arm is made up of:
• Wheelchair mounting bracket - for mounting the lift arm on the wheelchair
• Robotic arm mounting post - a mounting point for the robotic arm on the lift arm
• Electromechanical lift actuator - a motor to lower / lift the lift arm and robotic arm
• Lift actuator limit switch - sets a limit to how far forward the lift arm can tilt
• Body of lift arm - chassis / frame housing the lift actuator and supporting the weight of the
mounted robotic arm
• Hinged swing-away mechanism with hinge and latch - allows the lift arm to swing away from the
wheelchair to facilitate entry and exit from the wheelchair
• Bumper screw - prevents wobble in the swing-away latch (not shown)
Wheelchair mounting bracket
Robotic arm
mounting post
Body of lift arm
Swing-away mechanism latch
Bumper screw
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