Order-Picking Forklift Terminology, Types, Components and Stability
What an LO is
An order-picking forklift is a high-lift machine designed so the operator's platform rises with the load, allowing picking from racking at height. The operator stands in a harness-equipped compartment on the elevating carriage. Key terms: carriage, mast, fork tynes, load backrest, overhead guard, operator platform, fall-arrest anchor point, harness and lanyard, deadman pedal, travel and lift controls, and the data plate.
Types
Common configurations are the dedicated order picker (operator rises, no forks for pallet handling) and the combination picker with forks for pallet work. Some have a scissor lift platform; others use a mast. Know which type you are licensed and trained to operate.
Stability principles
The machine is a counterbalanced or straddle-stability design; stability depends on the centre of gravity staying inside the stability triangle or base area. Raising the load raises the combined centre of gravity, reducing stability. Forward reach, side slope, speed in turns and dynamic braking all shift load and can cause tip-over. The data plate shows rated capacity at a stated load centre; capacity falls as load centre increases (de-rating). Never exceed the plate rating, and check the chart for the actual attachment and lift height.
Traps
Questions often confuse the data plate with the load chart, or assume rated capacity is fixed regardless of load centre or attachments. Another trap is assuming the overhead guard is a fall-protection device - it is not; the harness and anchor are.
Rule of thumb
Higher lift plus longer load centre equals lower capacity. If the load centre is beyond the chart value, treat the machine as de-rated and recalculate before lifting.