- Jul 31, 2025
- Case Studies
Two 4T Jib Cranes for Brazil Workshop
Check out our Two 4T Jib Cranes designed for a workshop in Brazil! Perfect for lifting and moving heavy loads with ease. Elevate your workspace today!
A developing assembly workshop in Brazil required localized lifting solutions to support its new manufacturing line. The customer manufactures medium-sized steel assemblies, such as frames, panels, and subassemblies, and assembles them into finished products. To increase production and safety, they needed two 4 ton jib cranes, each with a 7-meter lifting height. Both cranes would use Yuantai's hook-type electric chain hoist, which would be controlled by a wireless remote. This case study describes the customer's crane requirements, the obstacles they encountered, the specific jib crane and hoist design, performance in a variety of jobs, benefits realized, and additional uses for comparable jib cranes.
4T Jib Crane Product – Customer's Crane Need
The customer needed a 4-ton jib crane to improve material handling in their indoor production workshop, where steel subassemblies such as welded chassis frames, motor housings, and large sheet-metal panels are regularly lifted. Before this project, they used mobile trolleys and temporary overhead chain hoists, which required manual slinging, frequent trolley repositioning, and multiple operators for each lift. This led to long handling times, with a single 3-ton chassis frame taking up to 15 minutes to move from welding to inspection. The process was labor-intensive, often needing two or three workers, which increased fatigue and safety risks. Coverage was also limited, as temporary hoists could only serve small areas, forcing extra manual handling when loads moved outside the lifting zone. The customer wanted a dedicated jib crane to reduce handling time, lower labor demand, expand coverage, and create a smoother and safer workflow.
Challenges Before Using 4 T Jib Crane Product
Prior to using the jib crane we supplied, the client's workshop had a number of issues which posed a safety risk to the workshop. According to the customer, before contacting us, some of their previous cranes had been in use for many years and the motors and other components were unusable due to failure. They contacted a number of suppliers and could not find suitable parts for replacement. This affects the work of the workshop.
1. Frequent Manual Rigging
According to the client, their building was constructed many years ago, and with subsequent development, some of the work areas in the workshop were cramped. Lifting in these work areas routinely relies on manual rigging and mobile cranes, requiring time to set slings, reposition and adjust lift heights. In addition to the time spent, repetitive rigging operations increase wear and tear on slings and equipment, requiring regular inspection and replacement.
2. Interruption of Production Flow
As assemblies become larger and more complex, occasionally some parts exceed the carrying capacity of the mobile crane. Operators will need to use other means of moving parts. Because of its slow speed, it can sometimes cause congestion on the floor, slowing down work in the shop. In addition to increasing internal material handling lengths and dwell times, the necessity to interrupt processes for ad hoc lifting resulted in longer lead times and a decreased capacity of the plant to satisfy stricter delivery windows.
3. Safety Incidents
This also poses a number of safety hazards due to the cranes being in use for a long time and the use of manual lifting in some areas. In addition to this, prolonged manual lifting can lead to operator fatigue, aches and pains and musculoskeletal disorders. In addition, repetitive manual lifting increases the risk of injury. These safety hazards are not conducive to shop floor production.
4T Pillar Mounted Jib Crane Product Design Provided by Yuantai
Yuantai's 4-ton pillar-mounted jib crane solution was developed to offer a compact, strong lifting system that can be set up in a small workshop. To balance structural stiffness, serviceability, and operator ergonomics, the engineered package includes a trolley-mounted hoist, a long 7 m tubular boom, and a sturdy 4 m mast. Additionally, it has safety, control, and compliance elements that are pre-installed in the factory and ready for foundation design, site installation, load testing, and planned maintenance.
1. Jib Crane Structure
The mast and baseplate assembly is a heavy-section vertical column anchored to the workshop floor with M24 anchor bolts and sized to resist overturning and cyclic fatigue under the 4-ton rated load at full 7 m outreach; the column interfaces with a thick, machined base plate and is intended to be grouted to a properly engineered concrete foundation to control deflection and vibration. The 7 m boom is a tubular Q345B steel member with welded end caps and bolted internal stiffeners that prevent local buckling and reduce torsion, and it rides on a double-row roller slew bearing with sealed lubrication ports to provide smooth 180° rotation under load. All welds, fasteners, and coatings are specified according to industry standards to ensure long-term corrosion protection and easy inspection access for nondestructive testing. Mechanical safety stop tubes fixed at ±90° from the home position protect against over-rotation and accidental impact with the building structure.
2. Hook-Type Electric Chain Hoist
Each jib crane is fitted with a compact hook-type electric chain hoist selected from a 0.5–35 ton family, specified here as a 4-ton model engineered for high-cycle workshop use: the hoist offers the configured 7 m lift with minimal headroom loss thanks to a short profile, a forged alloy steel hook with spring-loaded safety latch and a conical rotor motor with integrated holding brake for positive load retention; the unit is rated for 220–440 V, 50/60 Hz (single- or three-phase as supplied), IP44–IP55 protection for indoor industrial environments, and an operating ambient from –20 °C to +40 °C. Thermal motor protection, sealed roller bearings for smooth travel in dusty conditions, overload and over-current sensing, and a control suite with a 36 V pendant and a two-hand wireless remote—both with emergency-stop—as well as features for cable festooning, local isolation, and accessible mechanical stop blocks at trolley run-out positions are examples of safety and electrical protection.
3. Control and Safety Systems
The hoist's built-in sensor and electrical cut-out provide overload protection; emergency-stop buttons are on the pendant, remote, and column; and mechanical stops and anti-collision cushions guard against unintentional sweep of the building and other equipment. In order to maintain high uptime and ensure ongoing compliance with FEM 4m duty classification and EN 13155 jib crane requirements, the design package also recommends the following additional features: grouped electrical protection, manual slew bearing lock for maintenance, audible and visual warning devices for slewing and travel, acceptance tests and documentation, including factory inspection reports, rated-load proof tests, and commissioning records, as well as a proposed periodic inspection and lubrication schedule and spare-parts list.
Yuantai Floor Mounted Jib Cranes and Other Jib Cranes
Performance Outcomes – How 4 T Jib Crane Handled Varied Tasks
1. Welding Station Support
At the welding station, large subframes weighing up to 3.8 ton are delivered by forklift pallets. The jib crane operator uses the wireless remote to pick up each frame, swing it over the welding table, and lower it with ±10 mm accuracy. The chain hoist's dual speeds (0.4 m/min for heavy loads and 4 m/min for empty hook travel) allow rapid positioning when unladen and fine control during placement. As a result, welding preparation time dropped from 15 minutes to under 4 minutes per frame, boosting daily welding throughput by 60%.
2. Inspection and Finishing Area
In the inspection bay, the second jib crane handles 2.5 ton panels and fixtures. After welding, panels are transferred directly from trolleys to the jib crane hook, inverted if necessary, and positioned on height-adjustable stands. The hoist's precise lift height control and steady descent speed prevent panel edges from snagging. This capability reduced handling damage by 75% and cut inspection setup time by half.
3. Handling Irregular Loads
Occasionally, the workshop processes long sheet-metal panels (up to 5 m long, 2 ton). Operators mount a spreader beam on the hoist to balance these panels. The flexible hook-type chain hoist can link to various fixtures, showcasing adaptability. Through this setup, the plant achieved safe handling of awkward loads without adding dedicated equipment.
Advantages of 4T Jib Crane Product
The 4-ton floor-mounted jib crane is a single-pillar lifting solution for medium-weight workstations. It gives local, accurate lifting and rotation over a fixed radius. Buyers often choose it for maintenance bays, machine loading, and short-travel assembly tasks. Check rated capacity, boom length, and foundation requirements before you buy.
1. Load Capacity and Structural Stability
With safety allowances for dynamic loads, this jib is designed to support a 4 T static lift. To prevent overturning, the base plate and pillar are secured with massive anchor bolts and thick steel. Seek out a foundation drawing that corresponds with your floor circumstances and validated structural calculations.
2. Coverage, Reach, and Precision
The pivoting boom provides smooth 180°–360° rotation depending on the model. The trolley and hoist run deliver precise lateral positioning at the workstation. Choose the boom length and trolley travel to match your load footprint. For alignment work, specify fine-speed control or a low-speed hoist option.
3. Installation and Foundation Requirements
A reinforced concrete pad large enough to accommodate wheeling and overturning loads is required for floor mounting. For easy installation, the crane comes with a base plate and anchor bolt pattern. Consult a structural engineer to verify the rebar arrangement and pad thickness for your floor and soil. During commissioning, schedule alignment and grouting inspections.
4. Safety and Control Features
Overload protection, upper/lower hoist limits, slew stops, and emergency stops are examples of standard safety features. To secure the boom while it is at rest, the pillar frequently has mechanical brakes or rotation locking pins. Verify the IP rating for control enclosures and ask for alternatives for pendant and radio remote controls. Demand a pre-delivery inspection checklist and user manuals.
5. Maintenance and Serviceability
Easy access to the hoist, gearbox, and slew bearings is favored in the designs. Routine checks are accelerated by grease spots and inspection apertures. Request a list of spare parts and suggested maintenance schedules. A modular hoist mount minimizes downtime in the event of a repair or exchange.
6. Environmental and Surface Protection
Choose an industrial powder coat or hot-dip galvanizing for locations that are exposed to corrosion or are outside. For coastal exposure, select fasteners that are zinc-plated or stainless. If your situation requires it, specify high-temperature cable jackets and sealed electrical enclosures. Verify the coatings' warranty conditions.
Other Applications for 4 T Jib Crane Product
Although our case study focuses on steel subassembly handling, the versatility of a 4T jib crane with a hook-type electric chain hoist makes it an excellent lifting solution for a variety of indoor applications. With a small footprint and the capacity to rotate between 180-360°, these cranes allow precise positioning in areas where traditional bridge cranes cannot reach or would be prohibitively expensive to install. Their modular design also allows for wall or column mounting, making them suitable for both new construction and retrofit applications.
1. Automotive Assembly Lines
Precision and cycle time are extremely important in vehicle manufacturing. A 4T jib crane can lift and move heavy components including engine blocks, transmission housings, and subframes onto assembly fixtures or welding tables. The electric chain hoist's controlled, smooth movement decreases part swing, improves alignment precision, and lowers the danger of damaging delicate machined surfaces. Because mobile platforms and manual hoists can introduce variation, the jib crane's fixed mounting and repeatable range of motion assist standardize worker motions and shorten takt times.
2. Maintenance Workshops
Heavy-equipment repair shops routinely service transmissions, gearboxes, pump housings, and hydraulic motors that weigh more than a ton. A jib crane allows specialists to hoist these large assemblies from test stands or engine bays and precisely drop them into inspection benches or repair fixtures. Its ergonomic height adjustment and 360° slewing arm eliminate the requirement for shop floor forklifts, which improves safety in limited spaces. Hook-type electric chain hoists also provide precise micro-positioning, which is critical when reassembling close-tolerance bearings or mating flanges.
3. Electronics Manufacturing
Clean-room and controlled-environment facilities for large electronics assembly often handle heavy, heat-sink modules and rack-mount enclosures that require placement under strict particulate and temperature controls. A stainless-steel jib crane with smooth surfaces resists particle generation and can be integrated into laminar flow benches. The 4 T capacity is ideal for multi-module test rigs, while the chain hoist's variable speed control enables operators to position delicate assemblies without inducing vibration or electrostatic discharge issues.
4. Pharmaceutical Production
Pharma factories frequently use thick stainless steel for processing reactors, mixing containers, and filtering skids, which can weigh several tons. Overhead bridge cranes may not be suitable for clean-in-place (CIP) rooms or containment areas, but jib cranes can be mounted on sanitary-grade columns or walls outside the critical zone. The motorized chain hoist with hygienic load hooks allows for rapid reactor changeovers, decreasing downtime between production batches. Jib cranes also save important ceiling-mounted utilities and piping by requiring significantly less headroom.
5. Textile Dye Houses
Textile dyeing plants often replace or maintain big dye vats, rollers, and drum agitators. The narrow dye benches and overhead pipe networks offer little room for conventional lifting equipment. A 4 T jib crane with a sleek end-mounted trolley can run on rails installed above the benches, allowing operators to navigate lengthy dye lines. The electric chain hoist lifts heavy rollers and vats out of channels for cleaning or repair, and the slewing arm safely swings loads away from hanging dyes and piping.
6. Additional Environments
Aside from these industries, 4t jib cranes are commonly used in laboratories to handle demonstration equipment, wood shops to manipulate massive timbers or glue-up fixtures, and food processing factories to move ingredient hoppers, mixers, or packaging conveyors. Because of their ease of integration, inexpensive initial investment compared to gantry or bridge cranes, and low maintenance needs, they are the preferred solution for localized, high-capacity lifting.
Conclusion
The two 4 ton jib cranes with hook-type electric chain hoists and wireless remote controls transformed material handling in the Brazilian workshop. By addressing the customer's need for precise, efficient lifting up to 7 m height, the cranes eliminated manual rigging, reduced handling time by 70%, and improved safety and ergonomics. The robust jib crane design provides flexible coverage of key production cells with minimal floor impact. Beyond this specific application, similar jib crane systems can support diverse indoor industries—from automotive to pharmaceuticals—where reliable, localized lifting is essential. For workshop managers seeking to optimize workflow, reduce labor cost, and enhance safety, the Yuantai 4 ton jib crane with hook-type chain hoist offers a proven, versatile solution.
