MEWP.guide technical guide
Spider lift vs boom lift
Compare tracked spider lifts with self-propelled boom lifts across access, setup, mobility, ground conditions, power and working envelope, with real ranges from our catalogue.
Choose a spider lift for compact, tracked access into restricted or delicate ground: gardens, atriums, paved courtyards, roof gardens, anywhere the machine can be walked into position and stabilised on point loads. Choose a self-propelled boom lift when the task needs to reposition while elevated, cover an open site quickly, or when a proven outdoor working envelope at scale matters more than a small footprint. Neither category is universally better. The right choice depends on the access route, the ground, and how much the work itself moves around the site.
Access and setup
Spider lifts travel on tracks and are typically narrow enough to pass through standard doorways and garden gates, then deploy outriggers or stabiliser legs before the platform can be raised. That set-up step takes time and needs a level, load-bearing surface under each stabiliser. See our ground conditions guide below before assuming a spider lift is the faster option.
Self-propelled boom lifts (articulating and telescopic) generally raise directly from the chassis without separate outriggers, so they can often be driven onto site, positioned and elevated in a single continuous operation. The trade-off is a wider transport footprint and, on most models, a higher machine weight for a given working height.
Movement at height and repositioning
Many self-propelled booms can drive while elevated, within the manufacturer's stated limits on ground slope, wind and platform load. That's useful for tasks that move along a facade or across a large open area without lowering between positions.
Spider lifts are generally repositioned by lowering the platform, retracting the stabilisers and tracking to the next position before setting up again. For work concentrated in one small area this rarely matters; for a task that needs to cover a lot of ground it becomes a real time cost.
Ground conditions and stabiliser footprint
A spider lift's outriggers concentrate the machine's full weight through a small number of point loads. On soft ground, paving, decking or any surface with an unknown load rating, that means checking ground bearing pressure and using load-spreading mats. See our weight and floor loading guide.
A self-propelled boom distributes weight across more, larger tyres, which generally reduces peak ground pressure at any one point but still requires checking tyre-contact loads against the surface, especially on floors, bridges or basements.
Reach and working envelope
Across our current catalogue, spider lifts range from roughly 9.6 m to 54.1 m working height with horizontal outreach up to about 23 m, while self-propelled booms (articulating and telescopic combined) range from roughly 10.6 m to 58.8 m working height with outreach up to about 27 m. Both categories overlap heavily in the 10-40 m band most jobs actually need, so the deciding factor is rarely maximum height alone.
As with any MEWP, published maximum outreach is usually load-dependent and can shrink at full basket capacity, a wider slew angle or reduced stabiliser spread. Confirm the working envelope at the load you'll actually carry, not just the headline figure.
Power source and emissions
Spider lifts in our catalogue are predominantly bi-energy (a combined mains/battery or engine/battery drive, common on European tracked platforms), which suits indoor-to-outdoor transitions and low-emission zones without sacrificing outdoor range.
Self-propelled booms skew towards diesel, with a growing share of electric and hybrid models. Diesel still dominates where long outdoor duty cycles and rough terrain matter most; electric and hybrid booms are increasingly common for indoor and emissions-restricted sites.
Typical applications
Spider lifts are common for tree work, roof and atrium access, event rigging, and any job where the access route is narrow, the ground is delicate, or the machine has to be tracked through a building. Their narrow stowed width (as little as under 800 mm on the most compact models) suits routes a boom simply won't fit through.
Self-propelled booms are the default for construction, facilities maintenance, warehousing and outdoor infrastructure work: open sites where speed of repositioning and a well-proven outdoor envelope outweigh the benefit of a smaller footprint.
Spider lift vs Boom lift
* Ranges observed across machines currently in our catalogue, not a manufacturer specification. Always confirm the exact envelope for the model and configuration you intend to use.
Frequently asked questions
Is a spider lift more stable than a boom lift?
Both are stable within their manufacturer's rated envelope when set up correctly. A spider lift's outriggers give it a wide, adjustable stabiliser footprint for uneven ground, but that stability depends entirely on correct deployment and adequate ground bearing capacity under every point load. It is not automatically more stable than a boom on firm, level ground.
Can a spider lift go on grass or soft ground?
Many can, but only with load-spreading mats or pads under the stabilisers and a check of the actual ground bearing capacity, since published machine weight alone doesn't tell you the point load through each outrigger. Confirm this with the manufacturer's outrigger reaction figures and a site-specific assessment.
Do boom lifts need outriggers?
Most self-propelled articulating and telescopic booms do not use separate outriggers and are rated to operate from the chassis on their tyres, within the manufacturer's ground-slope and surface limits. Truck- and trailer-mounted booms are a different category and typically do require outriggers.
Which is faster to set up on site?
A self-propelled boom is generally quicker for a single position, since it drives and elevates without a separate stabiliser step. A spider lift's set-up time is offset by its ability to reach positions a boom's wider chassis and turning circle can't access at all.
Can I compare a specific spider lift and boom lift model directly?
Yes. Use the compare tool to put two machines side by side on every published specification.