14 LD-250 Platform User's Guide 20472-000 Rev B
1.2 Product Description
Chassis and Drive Train
Each LD-250 uses a two-wheel, differential-drive, with passive casters front and rear for bal-
ance. The drive-wheels have independent spring suspension, with solid, polyurethane tread.
The wheel axles are located near its center line, making the LD-250 highly maneuverable and
able to rotate in place.
You can disengage the drive wheels by turning a cam lever on the gearbox. This is required for
some set up and maintenance operations. See: Engage and Disengage the Drive Wheel Motors on
page 148.
CAUTION: BRAKES DISABLED. When the drive wheels are disengaged, the
AMR brakes are inoperable. Take care when you move the LD-250 on inclined
surfaces.
Figure 1-2 Drive Assembly in LD-250 (skins removed).
Callout Description
A Drive Train assembly (wheel, suspension and motor).
B Drive motor assembly, containing the gears, encoders, and electric brake.
C Rear caster.
D Drive wheel, aluminum with polyurethane tread.
E Front caster.
F Suspension springs.
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