UNIC URW-7035 Cube Crane Compact Mini Spider Crane

Model URW-7035 | 0.98t × 6.44m Max Capacity | 1.5m Width | 21.17m Lift Height | Unique 3-Section Derricking Boom (85°/90°/95°) | Industrial Double Doorway Access

The UNIC URW-7035 Cube Crane is the most advanced mini crane in the world to feature a three-section derricking boom, enabling it to be set at 85°, 90° and 95° angles — making it extremely versatile for some of the most restricted-access and confined lifting projects. The Cube Crane benefits from innovative multi-position outrigger configurations, enabling this miniature crane to work and operate safely around obstacles on site. Featuring nearly a tonne of lifting capacity, this compact machine also benefits from a lifting height of 21.17 metres and a horizontal reach giving a maximum working radius of 13.99m. At just 1.5m wide it gains access through a standard industrial double doorway.

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

• Unique 3-section derricking boom — set at 85°, 90° or 95° for extreme angle work
• Through-hole lifting capability — deploy/retract through a floor opening for between-level lifts
• 21.17m maximum lift height — from a 1.5m wide machine that fits double industrial doorways
• Multi-position outrigger configurations — operate safely around obstacles on site
• Boom reposition while travelling — navigate corners with the boom partly deployed
• Full colour high-resolution SLI — with radio remote control and bi-axis joysticks
• Forward-facing camera as standard — for confined-site visibility

Suitable Applications

The Cube Crane is purpose-built for situations no other mini crane can handle: lifting through floor openings for between-floor work, atrium lifts where the boom must articulate at extreme angles, multi-storey mezzanine installation, and projects with restricted vertical and horizontal access combined. Frequently specified for heritage refurbishment, historic buildings, and shopping centre interior works requiring complex multi-angle boom geometry.

How to Set Up and Operate the URW-7035

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: Diesel + Optional 400V Electric (LPG dual option).

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