Autonomous Pallet Jack vs Autonomous Forklift
"Pallet jack" and "forklift" are often used loosely, but in autonomous warehousing they're distinct equipment classes with very different operational roles. Understanding the difference saves a lot of time evaluating fleet options — and saves real money in capital and operating costs.
The Equipment Class Distinction
| Attribute | Autonomous Pallet Jack | Autonomous Forklift |
|---|---|---|
| Equipment class | Powered pallet truck (Class III) | Counterbalance / reach truck (Class I-II) |
| Lift height | ~100-200mm (ground transit only) | 3,000-9,000mm |
| Capacity | 1,000-2,500kg typical | 1,000-6,000kg |
| Footprint | Compact (1,500-1,800mm) | Larger (2,200-3,500mm depending on class) |
| Capex per unit | $80k-$140k | $140k-$280k |
| Use case | Ground-level pallet transit | Stacking, racking, dock loading |
| Speed | 1.5-2.0 m/s typical | 1.5-2.7 m/s typical |
| Aisle width | 2.0-2.5m typical | 2.5-4.5m depending on class |
What Autonomous Pallet Jacks Are Best At
Pallet jacks excel at the highest-volume, lowest-complexity movements in warehouses:
- Ground-level cross-floor transit — moving full pallets from receival to staging or pick-face to dispatch
- Pick-zone replenishment to ground locations — filling pick faces from reserve floor stock
- Cross-dock pallet flow — receiving dock to outbound staging
- Dock loading from staging — final transit of pre-staged pallets onto trucks
- Manufacturing line replenishment — ground-level Kanban replenishment of production lines
Robots Now! offers the 2.0T Pallet Mover and 1.0T Single Pallet Stacker in this class.
What Autonomous Forklifts Are Best At
Vertical Storage Density
Pallet jacks can't stack. Anything above floor stock requires a counterbalance, reach truck, or stacker. For warehouses where vertical storage matters, forklifts are mandatory.
Outdoor & Yard Operation
Pallet jack drive systems are typically rated for indoor use only. Counterbalance forklifts handle indoor/outdoor transitions and yard surfaces.
Heavy / Oversized Loads
3T+ loads exceed most autonomous pallet jack capacities. Counterbalance trucks scale to 6T+ with appropriate sizing.
Truck Loading at Height
Loading double-stack pallets into trucks requires lift to ~2.4m. Pallet jacks cannot; forklifts can.
Fleet Composition: Both, Not Either
Most autonomous warehouse fleets benefit from running both equipment classes, with task assignment optimised by the fleet management system:
| Task | Best Equipment |
|---|---|
| Pallet movement < 100m at ground level | Pallet jack (faster, smaller, lower cost) |
| Pallet movement > 200m at ground level | Pallet jack with multi-pallet capability or tractor |
| Pallet placement above 1m | Stacker or counterbalance forklift |
| Pallet placement above 4m | Reach truck |
| Truck loading from dock | Counterbalance forklift |
| Outdoor yard movement | Counterbalance forklift or autonomous tractor |
Cost Optimisation Through Mixed Fleet
A fleet of 10 forklifts that could be replaced with 7 forklifts plus 4 pallet jacks generally lowers total fleet capex while increasing peak throughput, because pallet jacks can run in parallel with forklifts on the same dock without aisle conflict. Our fleet management system models task profiles and recommends the optimal equipment mix as part of every site assessment.