BZY Mobile Cantilever Crane for Flexible Lifting
Product Introduction
The BZY mobile jib crane (also known as a portable jib crane or mobile cantilever crane) is a compact, freely movable hoisting solution. Its counterweighted base design eliminates the need for embedded foundations or fixed installation—the unit can be manually pushed across smooth surfaces with ease. With a load capacity of 0.125–0.5t, a cantilever length of 3m, a lifting height of 3m, and a lifting speed of 8m/min, it is ideally suited for light-duty material handling in environments where the work area is not fixed.
The BZY mobile jib crane serves as an essential standalone emergency hoisting unit on efficient automated production lines. It can be positioned alongside any workstation to respond flexibly to unexpected lifting needs. It is widely used for small equipment installation and cargo loading/unloading in factory workshops, warehouses, outdoor sites, and low-ceiling buildings where overhead cranes are impractical.
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Product Features
Self-Contained, No Fixed Installation Required: The counterweighted base design requires no embedded foundation or floor anchoring. The unit moves freely on smooth surfaces and can be placed next to any workstation where lifting is needed—the most flexible emergency hoisting solution for automated production lines.
Manual Mobility, Maximum Flexibility: The lightweight construction allows one person to easily reposition the crane without the need for forklifts or other lifting equipment. It is ideal for locations where overhead cranes are impractical, offering true push-and-use convenience.
Compact Footprint, High Adaptability: With a base width of only 1200–1400mm and outrigger width of 1018–1218mm, the compact undercarriage fits easily into tight spaces. The overall height of 3700–3900mm makes it suitable for workshops and warehouses with low ceilings where overhead crane installation is not feasible.
360° Cantilever Rotation, Easy Operation: The cantilever rotates a full 360°, and with the electric hoist traveling along the boom, it covers a circular working area centered on the column. The 8m/min lifting speed, combined with optional two-speed control, delivers both efficiency and safety.
Working Principle
The BZY mobile jib crane employs the classic jib crane configuration of column + cantilever + electric hoist, mounted on a counterweighted base for portability. The base houses counterweights that ensure overall stability, with the column mounted vertically at the center. The cantilever connects to the column via a slewing mechanism, enabling 360° horizontal rotation. The electric hoist travels along the bottom flange of the cantilever to handle vertical lifting and horizontal transport of loads.
During operation, the operator pushes the mobile jib crane to the target workstation, confirms the ground is level and stable, then manually rotates the cantilever to position it above the load. The electric hoist lowers the hook to pick up the cargo, lifts it to a safe height, and the cantilever is then rotated to the destination position for lowering and unloading. The entire process can be completed by a single operator without assistance. The base is fitted with swivel casters and fixed wheels—the swivel casters provide easy maneuverability during transport, while the built-in brakes on the wheels lock the unit securely in place once positioned.
Structural Components
The crane consists of the following core components:
Counterweighted Base: A steel base with built-in counterweights, fitted with swivel casters and braked wheels at the bottom. The base width is 1200–1400mm with an outrigger width of 1018–1218mm, providing sufficient stability to prevent tipping.
Column: A steel pipe column mounted vertically at the center of the base, with the top connected to the cantilever slewing mechanism. The column height is approximately 3m, with wall thickness determined by the load capacity rating.
Cantilever Beam: With a cantilever length of 3m, the beam uses an I-beam or H-beam cross-section and is fitted with a buffer stop at the end. The cantilever rotates 360° around the column axis, covering a circular working area of 6m in diameter.
Electric Hoist: A chain electric hoist that travels along the bottom flange of the cantilever. It offers a lifting speed of 8m/min, a load capacity of 0.125–0.5t, and is equipped with limit switches and emergency stop protection.
Slewing Mechanism: The rotational connection between the column and cantilever, incorporating rolling bearings and thrust bearings to ensure smooth, stable rotation. Rotation torque is applied by manually pushing or pulling the end of the cantilever.
Technical Parameters
| Rated Lifting Capacity (t) |
Basehook with safety latch B (mm) |
Outrigger width E (mm) |
Cantilever Lengthdegrees L (mm) |
Lifting Height h (mm) |
Overall height H (mm) |
|---|---|---|---|---|---|
| 0.125 | 1200 | 1018 | 3000 | 3000 | 3700 |
| 0.25 | 1400 | 1218 | 3000 | 3000 | 3750 |
| 0.5 | 1400 | 1218 | 3000 | 3000 | 3900 |
Applications
Emergency Hoisting on Production Lines: When an unexpected hoisting need arises at a workstation on an automated production line, the BZY mobile jib crane can be quickly moved into position, complete the lift, and then be removed without disrupting the overall line layout. It is the essential emergency equipment for keeping production lines running smoothly.
Light-Duty Warehouse Loading & Unloading: For loading, unloading, and short-distance transport of light workpieces, spare parts, and tools in warehouses, the mobile jib crane offers the flexibility to move between storage bays, replacing fixed lifting equipment.
Field & Construction Sites: At outdoor worksites, construction sites, and equipment installation areas without overhead crane access, the BZY jib crane requires no power supply or foundation to begin hoisting operations (when paired with a manual hoist).
Low-Clearance Facilities: In workshops and warehouses with ceiling heights under 3.5m where overhead cranes are impractical, the BZY model, with a total height of just 3.7–3.9m and a 3m cantilever, operates effectively within confined low spaces.
Selection Guide
By Load Capacity: Choose the BZY0.125 for loads up to 125kg (base width 1200mm, most compact); the BZY0.25 for 250kg; and the BZY0.5 for 500kg. Higher capacities require wider bases and outriggers for stability. For loads exceeding 500kg, consider the fixed-column BZ Type jib crane.
By Lifting Height: Standard lifting height is 3m (total height 3.7–3.9m). Extended columns can be custom-ordered for greater lifting heights, but base counterweight and stability must be recalculated. A maximum lifting height of 4.5m is recommended to ensure safety.
By Usage Frequency: For frequent repositioning, choose the BZY series (mobile); for permanent, fixed workstations, the BZ Type fixed-column model offers better value. Mobile units are ideal for sharing one hoisting device across multiple workstations, reducing equipment investment.
Manufacturer Services
Henan Kelude Heavy Industry Co., Ltd. provides full-service manufacturing and after-sales support for the BZY mobile jib crane.
Quality Testing: Each unit undergoes a static load stability test at 1.25 times the rated load before shipment, confirming no tipping risk at maximum reach and full load. Electric hoists are tested under both no-load and full-load conditions.
After-Sales Warranty: Full machine warranty for 12 months; electric hoist and slewing mechanism warranted for 24 months. Nationwide after-sales response within 48 hours. Common spare parts (hoist chains, wheels, etc.) are kept in ample stock.
Request a Quotation
Need a quote for the BZY mobile jib crane?
Provide your load capacity requirements, application scenario, and whether an electric hoist is needed, and we will respond with a quotation within 2 hours.
Consultation Hotline: 13903802779
FAQ
Q: Does the BZY mobile jib crane require fixed installation or a foundation?
A: No. The BZY features a counterweighted base with a mobile design, requiring no embedded foundation or fixed installation. The entire unit can be manually pushed across smooth floors and locked into place with wheel brakes once positioned. The ground must be level and firm, with a slope of ≤3°.
Q: What is the maximum lifting capacity of the mobile jib crane?
A: The standard BZY series offers a maximum lifting capacity of 0.5t (500kg). Larger capacities are available on a custom basis, but the base counterweight and wheel load capacity must be redesigned. For loads exceeding 1t, a fixed-column jib crane (BZ Type) or wall-mounted jib crane (BQ Type) is recommended for greater stability.
Q: Can the cantilever rotate 360 degrees? Does it require a power supply?
The cantilever rotates 360° horizontally (by manual push/pull), covering a circular area centered on the column. The electric hoist requires a 220V or 380V power supply. For power-free operation, a manual chain hoist can be fitted as an alternative to the electric hoist.
Q: What are the transport and storage requirements for the mobile jib crane?
The crane is ready for use straight from the factory — no on-site assembly is required (the column and cantilever come pre-assembled). For transport, the cantilever can be rotated parallel to the base to reduce the footprint. For storage, keep the crane indoors in a dry location to prevent rain from causing rust on the bearings and hoist.
Q: What type of floor surface is suitable? Can it be used on uneven ground?
It is designed for use on flat, hard surfaces such as hardened concrete, terrazzo, or steel plate floors. Uneven or soft ground can cause the base to rock, creating a tipping hazard. Before use, check that the floor is level — a height variation of ≤5mm/m is recommended.
