The UNIC UM445 Pop-Up Mini Spider Crane is powered by lithium-ion technology with a high-capacity 160Ah battery pack that can charge while in operation, ensuring sustained power and eco-friendly green lifting. The 2.9 – 10.0m main boom and hydraulic telescoping luffing jib with 1500kg capacity deliver 17.5m of lifting height and a 15.7m working radius, with extendable tracks providing stability and manoeuvrability across many terrains. The unique pop-up turret design reduces rear overhang, allowing the crane to work closer to walls and obstacles than ever before.
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
Technical Specifications
| Specification |
Detail |
| Crane capacity |
4.0t × 1.8m |
| Max working radius |
9.8m (15.7m with hydraulic jib, 15.6m with searcher hook) |
| Max lifting height |
10.9m (16.4m with hydraulic jib, 17.5m with searcher hook) |
| Boom length (main) |
2.895 – 10.075m (5 section hexagonal box) |
| Jib |
1500kg capacity, 1.98 – 5.74m (4 section hydraulically telescoping) |
| Folded dimensions (L × W × H) |
3130 × 750–1110 (extendable) × 1945mm |
| Unladen weight |
3830kg |
| Rope |
8mm × 59m |
| Battery |
Lithium-ion, 51.2V DC, 160Ah (4 series × 3 parallel) |
| Battery charger |
AC 95–265V single phase, charges 3.0hr (AC200V) / 6.2hr (AC100V) |
| Pick & carry |
500kg |
| Track width |
200mm; expandable from 750mm to 1110mm overall |
| Travel speed |
0 – 2.0km/h (2-speed hydrostatic) |
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.
UNIC Cranes | LOLER Compliant | Hire from WOLFF Onsite
This UNIC mini spider crane is supplied by WOLFF Onsite for hire across the UK. All cranes are LOLER-tested and supplied with a current Report of Thorough Examination. UNIC has been manufacturing mini spider cranes for over 50 years and is the original spider crane brand — the patented stability protection, intelligent voice warning system and computer-controlled moment limiter set the safety benchmark for compact lifting. Operator training, on-site delivery and full technical support are available — contact our team to discuss your project.
More About This Product
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.
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
- Survey the working area, verify ground bearing capacity against the published point loadings and confirm overhead clearances are sufficient for the proposed boom geometry.
- 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.
- 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.
- Level the crane using the bubble level / auto-level system and verify all outrigger interlocks are engaged before luffing the boom.
- 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.
- Set any working area, slew or height limits required by the lift plan via the safe load indicator interface.
- 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.
- 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
Q: Can the UM445 be operated indoors?
Yes — the UM445 is specifically designed for indoor and sensitive-environment lifting. It is fully battery powered with zero tailpipe emissions and low noise, making it suitable for hospitals, listed buildings, food processing plants and other indoor sites.
Q: Do I need a trained operator to use this crane?
Yes. All spider cranes must be operated by a competent, trained and certified operator (typically CPCS or NPORS certified). WOLFF Onsite can supply operated hire or arrange operator training as part of the package — please contact us for details.
Q: Is the UM445 available for short-term and long-term hire?
Yes. WOLFF Onsite offers daily, weekly, monthly and project-length hire for the full UNIC URW range. Contact us with your project dates, lift plan and site address for a tailored quotation including delivery, off-load and operator if required.
Q: What are the point loadings I need to consider?
Spider crane point loadings vary with boom angle, radius and outrigger configuration, so they are supplied on a per-project basis. Provide your lift plan and proposed setup position and we will supply the relevant point loading data for ground bearing assessment.
