Square pads and round pads do the same job: spread the outrigger load across a wider area of ground. The choice between them depends on the machine, the application, and the ground conditions. Here is how to decide.
The Key Difference — Bearing Area
For the same nominal size, square pads give more bearing area than round pads.
| Nominal Size | Square Area | Round Area | Difference |
|---|---|---|---|
| 600mm | 0.36 m² | 0.28 m² | +27% |
| 800mm | 0.64 m² | 0.50 m² | +27% |
| 1000mm | 1.00 m² | 0.79 m² | +27% |
| 1200mm | 1.44 m² | 1.13 m² | +27% |
If ground bearing pressure is the primary concern, square pads are the more efficient choice. The same footprint gives you 27% more ground contact every time.
When to Choose Square Pads
Choose square when you need maximum bearing area, when you need to align the pad edge with a kerb, wall or excavation, or when the lift plan specifies minimum pad area and a square pad meets the requirement where a round would not. Square pads are the default choice for mobile cranes, concrete pumps and heavy plant where load spread is the priority.
When to Choose Round Pads
Round pads are preferred where the outrigger foot is round and can rotate under load. The circular shape means load distribution stays even regardless of which direction the outrigger foot faces. If the outrigger swings or the float rotates during setup, a round pad handles this naturally. Square pads can rock or concentrate load on a corner if the foot is not aligned.
Round pads also sit better on uneven or undulating ground. The absence of corners means there is no single point where the pad edge meets the surface at an angle.
Flat vs Recessed — The Other Choice
Flat Pads
Sit under the outrigger foot. Universal. Simple to position. No risk of the foot slipping off on firm ground. The right choice for most applications.
Recessed Pads
Machined dish that locates the outrigger foot and prevents sliding. Worth using when working on slopes, uneven ground, or where the machine will be repositioned with the outriggers deployed. Available in the Essential Range for smaller machines.
Which Range?
Premium Square →
400mm to 1200mm. For mobile cranes, concrete pumps and heavy plant. Maximum bearing area. Manufacturer-listed ratings from 12 to 126 tonnes.
Premium Round →
800mm to 1200mm. For mobile cranes and heavy plant where outrigger rotation matters. Manufacturer-listed ratings from 26 to 126 tonnes.
Essential Range →
300mm to 600mm square and recessed. For MEWPs, scissorlifts and HIABs. 5 to 25 tonne rated.
Pad Size Calculator
Find your best-fit pad
Enter your outrigger load and ground type. The calculator recommends the best-fit pad from both Essential and Premium ranges and shows whether square or round meets your minimum area requirement.
Find Your Pad
Use the Pad Size Calculator for an instant recommendation, or call us and we will advise on the right shape and size for your machine.
