Ground clearance of a pallet stacker (manual, semi-electric, or electric) is designed with a balance between stability, maneuverability, and load capacity. Here's how it is generally considered:
1. Functional Considerations
Low clearance (commonly 20–30 mm under the legs):
Ensures stability by keeping the center of gravity low.
Allows the stacker to pass under pallets with standard entry clearance.
Enough clearance for floor conditions:
It must pass over smooth warehouse floors, joints, and slight unevenness without getting stuck.
Usually, clearance is minimized to prevent the machine from "rocking" when loaded.
2. Structural Design Factors
Leg design:The fork legs and support struts are built low and wide, so the stacker hugs the ground.
Wheel size:The diameter of load wheels and steering wheels partly dictates clearance. Smaller wheels → lower clearance.
Chassis reinforcement:The lower frame is strong enough to carry weight without bending, even with limited clearance.
3. Safety & Stability
A low ground clearance reduces the risk of tipping during lifting and traveling.
Helps ensure that the stacker doesn't allow sudden load shifting.
Prevents workers' feet from accidentally slipping under the frame (sometimes additional guards are added).
The ground clearance of a pallet stacker is intentionally designed to be as low as possible while still allowing smooth movement over flat floors, because stability and pallet entry are higher priorities than off-ground maneuverability.
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