UNIC UM445 Pop-Up Mini Spider Crane

Model UM445 | 4.0t × 1.8m Max Capacity | 750 – 1110mm Variable Track Width | 17.5m Lift Height with Searcher Hook | Lithium-Ion Battery (Charges While Operating) | Pop-Up Column Design

Powered by lithium-ion technology and a high-capacity 160Ah battery pack with the ability to charge while in operation, the UNIC UM445 Pop-Up Crane ensures sustained power and contributes to reduced carbon emissions for eco-friendly green lifting. Its extendable tracks provide heightened stability and manoeuvrability across many terrains. Standard features include a 2.9 – 10.0m main boom and a hydraulic telescoping luffing jib / searcher hook attachment with a 1500kg capacity, extension range from 2.0 to 5.7m, and a luffing range of -10° to 160° offset — delivering 17.5m of lifting height and a 15.7m working radius. The unique pop-up turret design reduces rear overhang, allowing the crane to work closer to walls and obstacles than ever before.

Technical Specifications

Specifications above are taken from the UNIC manufacturer's spec sheet at standard configuration. Variants with electric, LPG or other options may differ slightly — full rated capacity charts supplied with each hire.

Key Features

• Lithium-ion power with charge-while-operating — sustained power without downtime for recharging
• Pop-up turret design — reduces rear overhang, enabling work closer to walls than competitors
• Extendable tracks 750 – 1110mm — narrow to fit doorways, expand for stability when lifting
• 4 tonnes at 1.8m main boom capacity — with a 1500kg-capacity 4-section hydraulic jib as standard
• 17.5m lift height with searcher hook — 16.4m with the hydraulic jib
• Five-position, three-extension variable outriggers — for tight spaces with Max+ capacities
• Auto-levelling system — simplifies setup on uneven ground
• Bellypack radio remote with 4.3” colour display — six linear levers for smooth precise control
• Non-marking tracks as standard — protects finished and polished floors

Suitable Applications

The UM445 is the choice for tight-radius indoor lifts where the rear-swing of conventional spider cranes would foul walls or obstacles — the pop-up turret design unlocks closer working than any competitor. Specified for tier-one indoor projects, plant rooms with minimal clearance, between-floor lifts via service lift, and any zero-emission lift demanding more than 2 tonnes of capacity. The charge-while-operating capability removes shift-end downtime that plagues other battery cranes.

How to Set Up and Operate the UM445

1. Survey the working area, verify ground bearing capacity against the published point loadings and confirm overhead clearances are sufficient for the proposed boom geometry.
2. Track the crane into position using the operator's seat or radio remote. Ensure the chassis is on firm, level ground or that load-spreader mats are deployed.
3. Deploy the outriggers to the configuration required by the lift plan — set each outrigger angle and extension, ensuring stabiliser pads make full contact with the ground.
4. Level the crane using the bubble level / auto-level system and verify all outrigger interlocks are engaged before luffing the boom.
5. Configure the rope reeving (1-fall, 2-fall, 4-fall or 5/6-fall as applicable) to match the planned load and required rope length.
6. Set any working area, slew or height limits required by the lift plan via the safe load indicator interface.
7. Carry out a function test, confirm the moment limiter and voice warning system are operational, then lift to working position and complete the lift in accordance with the lift plan.
8. On completion, return the boom to the stow position, retract outriggers and secure the crane for transit or overnight parking.

Warning: Spider cranes must only be operated by CPCS / NPORS / equivalent-certified operators working to an approved lift plan. Never exceed the rated capacity at the relevant radius shown on the load chart. Power source: Lithium-Ion Battery (Charge While Operating).

Safety Information

• The crane must only be operated by competent, trained and certified operators familiar with this specific UNIC model.
• A documented lift plan, prepared by an Appointed Person, is required for every lifting operation under LOLER 1998.
• Ground conditions must be assessed against the manufacturer's point loadings — supplied on request — before each lift.
• Outriggers must be deployed to a configuration that supports the planned load at the planned radius; mixed-extension configurations require a competent rating check.
• Never operate the crane outside the rated load chart, override the safe load indicator, or carry loads with the boom in an unintended configuration.
• Carry out daily pre-use checks of hooks, wire ropes, hydraulics, safety devices and the moment limiter prior to first lift each shift.

Inspection and Maintenance

Spider cranes must be subject to a Thorough Examination by a Competent Person at least every 12 months under LOLER 1998, with additional 6-month examinations required where the crane is used to lift persons. Daily pre-use checks should cover wire rope condition, hook and shackle integrity, hydraulic system, outrigger pads, tracks, safety devices and the safe load indicator. All WOLFF Onsite hire cranes are supplied with a current Report of Thorough Examination and full service history. Defects identified in service must be reported immediately and the crane taken out of use until repaired.

Frequently Asked Questions