The jib cranes offered by SELS offer the most complete range of solutions for the handling of loads up to 10,000 kg, based on in-depth knowledge of the most varied applications and many years of experience in lifting.
Mass production carried out with industrialised processes allows the production via economies of scale of completely reliable cranes which are technically innovative and offer excellent value for money. The quality of the components used and the excellent finish of the steel structures as well as the quality system certified UNI EN ISO 9001: 2000 allows us to offer a product of superior quality, which is long-lasting and in line with the latest international regulation standards
The jib cranes, manually or electrically rotated in column- or wall-mounted models, are designed to handle goods inside a plant, in a large square or to serve operative positions. The jib cranes have three functions:
The jib cranes are available in standard models for loads from 63kg to 10,000kg and jibs from 2m to 10.5 m in the following combinations:
Jib Crane Construction Specifications
Modularity of the components:
All the jib cranes offered by SELS are made according to the conception of modular components which assembled together in relation to commercial needs, as well as the standard versions always available from the warehouse, allow the rapid, economical realisation of numerous standardised and special applications. The base components, columns, brackets and arms, thanks to their extreme compactness are assemblable together so as to guarantee the maximum use of the hook run and, thanks to their minimum lateral encumbrance, allow the optimal use of the area in which the jib crane operates.
The column-mounted model:
The column-mounted crane consists of a supporting column, made of press-forged steel with a tubular structure with a polygonal section. This allows a high rigidity and stability of the crane and is fixed to the base with a base plate and a system of bolts and log bolts. In the upper part a pair of plates support the arm and allow it to rotate.
The wallmounted jib crane consists of a bracket support structure. This is formed by a pair of plates made of press-forged steel, fixed to the wall or anchored to a pillar with staybolts or screws which act as a support to the arm and allow it to rotate.
The arm, rotating around its own axis, consists of a supporting girder for the run of the hoist-carrying trolley. Depending on the model it can be made in profile or channel version.
The braking device of the arm:
The arm of the manually rotated jib crane is fitted in all models with a braking system. The brake, with clutch with asbestos-free friction material, allows the regulation of the force of rotation of the arm and ensures the stability of positioning.
Fixing systems of the crane
- Foundation frame with log bolts: The jib cranes are generally designed to be fixed to the ground using the foundation frame with log bolts inserted in a foundation plinth.
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- The fixing of the column to the floor can be done using chemical dowelling, also with a counterplate where necessary which allows better distribution of forces.
- The brackets and staybolts unit: This is used for fixing the bracket jib crane to a supporting pillar and is fitted with a pressure screws system which guarantees a better adhesion of the staybolts to the pillar.
The height of columns and the length of arms: The range of the jib cranes is characterised by a vast availability of standard models and made-to-measure special models. Standard models are shown below:
|Stanard Heights of the Columns (m)
||Other "Standard" Heights
|GBA / CBB / CBE
All the cranes with columns of heights different from the standard ones with “made to measure” heights are made in special execution or exceeding two metres or of a lower height with respect to the “base” column. Moreover the cranes with an arm of a length different to the standard ones shown in the relevant technical tables are special models.
Protection from atmospheric agents and environmental ones (dust, gas, etc.) is guaranteed by the varnishing treatment which includes the application of yellow paint with a base coat of a thickness of 40 microns and a top coat of thickness of 40 microns, subject to preparation of the surfaces by metallic sandblasting with SA2 grade. The drying in an oven for 40 minutes at a temperature of 80° C concludes the cycle.
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The structural elements of the manually or electrically rotated, column-mounted or wall-mounted, jib cranes are dimensioned in the class of service ISO A5 (according to ISO 4301/88).
Protection and insulation of electrical parts:
- Rotation motor: Protection IP54 (motors) IP23 (brakes); insulation class “F” (where necessary)
- Electrical panel: Minimum protection IP55 – Maximum power of insulation 1500V (where necessary)
- Push-button panel: Protection IP65 - Maximum tension of insulation 500V (where necessary)
- Collector: Protection IP65 – Maximum power of insulation 600V (where necessary)
- Rotation limit switch: Protection IP65 – Maximum power of insulation 500V (where necessary).
- Connector blocks: Minimum protection IP65 – Maximum power of insulation 1500V
- Cables: CEI 20/22 – Maximum power insulation 450/750V.
Electrical power supply
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The electrical jib cranes are designed to be powered with alternate electric power three-phase of: 400V according to IEC38-1. The CBE series “column” and MBE “wall” electrically rotated jib cranes must be powered with alternate electrical power with three-phase power +neutral+earth (-3+N+T).
Environmental conditions of use
- Use temperature: minimum –10°C;
- maximum +40°C
- Maximum relative humidity: 80% -
- Maximum altitude 1000m above sea level.
The standard crane must be installed in a ventilated environment, free from corrosive vapours (acid vapours, saline clouds, etc) and is designed for use in an indoor area (protected from bad weather). On request the crane can be supplied in the version designed for outdoor use.
The level of acoustic pressure emitted by the hoist is always lower than 85dB(A). The incidence of environmental characteristics such as transmission of sound by metallic structures, reflection caused by combined machines and walls, is not included in the figure shown.
Special Versions of our Jib Cranes
On request the following can be supplied for all the cranes:
- Special anticorrosive paint.
- Protection cover for motors and control panel.
- Rotation motor with stainless steel brake blocks and /or tropicalisation (for electrically rotated cranes).
- Anticondensation heaters.
- Area limiters.
- Supplementary electrical safety limit switches.
- Power supply voltages different from the standard ones (for electrically rotated cranes).
- Columns with a double arm.
- Personalised column heights and arm lengths.
Manually Rotated Jib Cranes:
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- GBA“column” series: Maximum rotation field 300° (290° in the T version)
- GBP “wall” series Maximum rotation field 270° (250° in the T version)
The manually rotated jib cranes in the GBA”column” series and the GBP “wall” series are designed for the handling of goods inside a plant, in a square or to serve operative positions. The standard models are available for lifting capacities from 125 kg to 2000kg and jibs from 2m to 8m The C-T-H versions are designed according to the three different versions of the arm.
“C” Channel version:
- for lifting capacities from 63kg to 1000kg and
- jibs from 2m to 7m
- The arm is made using a special section bar made of folded sheet metal, inside which the hoist-carrying trolley run.
- The arm is fitted with one or two staybolts which support the profile and connect it to the rotation tube.
- This version is characterised by the extreme ease of handling due to the low inertia derived from its own reduced weight.
- The arm is normally fitted with a special “channel” profile trolley, which allows it to be pushed with maximum fluidity.
“T” cantilever version:
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- For lifting capacities from 63kg to 2000kg and;
- Jibs from 2 m to 5 m
- The arm is made using a laminate T-beam form: the hoist-carrying trolley run on the lower flange of the T-beam.
- The girder is self-supporting and cantilevered, so it has no support staybolts, and it is directly integral with, via suitable reinforcements, the rotation tube.
- This version allows the optimum use of the available space at a height due to the absence of staybolts and allows the maximum use of the hook run. The arm allows the addition of electrical or mechanical push-trolleys.
“H” overbraced version:
- For lifting capacities from 125kg to 2000kg and jibs from 4m to 8m
- The arm is made using a H-beam section, the hoist-carrying trolley run on the lower flange of the H-beam. The arm is fitted with one or two staybolts to support the profile which connects it to the rotation tube. This version allows the use of the jib crane for loads and jibs superior to those possible with the C and T versions.
- The arm allows the addition of electrical and mechanical push-trolleys.
Electrical Power Supply
This is designed to power the hoist and/or electrical trolley, which run along the jib of the crane. It uses a connection box for the connection between the line and the power festoon cable, situated on the top of the column crane or near the bracket support in the wall version. The column crane can be supplied, on request, with a main on/off line switch which can be padlocked. The distribution of energy takes place via a flat festoon cable which slides on trolley along the arm.
Jib Cranes with an Articulated Arm
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CBB ”column” series
MBB ”wall” series
The manually rotated jib cranes with an articulated arm in the CBB ”column” series and the MBB ”wall” series, are designed for the handling of goods inside a plant or a building site where the presence of fixed obstacles would impede the free rotation in terms of the mobility of the arm when it is formed by one rigid element.
The cranes “with an articulated jib” are fitted with an arm made of two hinged “pantograph-shaped” segments which allow it to avoid fixed obstacles during rotation. The standard models are available for lifting capacities from 125 kg to 500 kg and jibs from 2 m to 7 m.
In the version designed for the application of manipulators the maximum load is 125 kg.
The jib cranes, both in the wall and column versions, are fitted with an “articulated arm”, which rotates on its own axis. The articulated arm is made using two cantilevered girders, which form the two hinged segments (semi-arms). The semi-arm on the “tie” side is generally made in boxed casing, while the “cantilever” side can be made using a T-beam or a tubular profile.
The first segment (semi-arm on the tie side) rotates around the axis situated on the column or on the bracket where it is fastened. The second segment (semiarm on the cantilever side) rotates on the ends of the first segment and is fitted with a planarity regulation system. The two semi-arms can be of different lengths and are able to rotate independently of each other.
Reciprocal mobility, thanks to the “pantograph” effect, allows the lifting equipment to reach any point in the area to be served, avoiding any obstacles to the rotation as well as increasing the surface area served behind the column or fixing pillar of the bracket. The entire articulated arm is directly integral with, via suitable reinforcements, the rotation tube. The two semi-arms, rotating on their own rotation axes via bearings, allow the optimal use of the available space at a height due to the absence of staybolts.
CBB: “column with articulated arm” series Maximum rotation field 360° MBB: ”wall with articulated arm”series Maximum rotation field 360°
Electrical power supply: This powers the hoist and for the connection between the line and the power cable has: Terminal box near the support bracket in the MBB wall version. A main on/off line switch which can be padlocked is positioned on the column in the CBB version. The distribution of energy takes place via cable. Electrical line with round multipolar flexible cable inserted in a channel welded under the flange of the jib. Push-button panel hanging from the hoist.
Jib Cranes with Motorised Arm
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- CBE: “column” series Maximum rotation field 300° (290° in the T version)
- MBE: “wall” series Maximum rotation field 270° (250° in the T version)
The electrically rotated jib cranes with a motorised arm in the CBE”Column” version or the MBE “wall” version are designed for handling goods in areas which are difficult to reach, where the presence of fixed obstacles would impede the practicability of the working area. They are used also when the frequency of manoeuvres, the entity of the load and the push forces, could cause excessive wear and tear if carried out manually. Available in standard versions for lifting capacities from 250 kg to 2000kg and jibs from 2m to 8m, in T and H models according to the different layouts of the arm.
“T” cantilever version
For loads from 500kg to 2000kg and jibs from 3m to 6m Made using solid section T-beam: the hoist-carrying trolley run on the lower flange of this. The girder is self-supporting and cantilevered, so without support staybolts, and is directly integral with, via suitable reinforcements, the rotation tube. This version allows the optimal use of the available space at a height due to the absence of staybolts and allows the maximum use of the hook run. The arm allows the addition of electrical or mechanical push-trolleys.
“H” overbraced version
For lifting capacities from 250 kg to 2000kg and jibs from 4m to 8m
Made using an H-beam section girder, where the hoist-carrying trolley run on the lower flange. The arm is fitted with one or two staybolts to support the profile which connects it to the rising rotation tube. This version allows the use of the jib crane for lifting capacities and ranges superior to those of the T version. The arm allows the addition of electrical or mechanical push-trolleys.
The arm, swivelling on its own axis on revolving bearings, is formed by a supporting girder for the run of the hoist carrying trolley.
The rotation mechanism:
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Formed by a motor reducer fixed vertically in the lower part of the support bracket, made with a reducer of epicycloidal type, with gears in a permanent oil and selfbraking conical brake motor. The drive sprocket of the motor reducer fits together with a toothed crown integral with the arm which it powers. The progressive starting up and braking are ensured by a variator of frequency (inverter) powered by alternate monophase power with 230V voltage.
Electrical power supply:
To power the hoist and the trolley which run along the arm of the crane as well as the rotation motoreducer. The power supply includes two electrical control panels, one for the control of the lifting and travel unit of the hoist, while the rotation control equipment is integrated with the motoreducer. Inside the panels the contactors for the control of all the movements of the crane are positioned. The control circuits are low voltage (48V) obtained via a transformer protected by fuses.
An easy-to-use connection terminal box, with numbered terminals, ensures simplicity and safety of the cabling of the cables related to all the external functions making any inspection easy to perform.
Power line: to power the trolley-hoist formed by flexible flat multipolar cables festooned on the sliding trolleys on the lower flange of the beam.
Push-button control panel:
Suspended on the hoist, with a case in shock proof thermoplastic, supported by a self supported round multipolar cable. When necessary it is fitted with a rapid socket with obliged polarity to make it easier to assemble and to replace. On request an independent, sliding, pushbutton panel can be installed along the jib of the crane, via cable-carrying sleds running inside a channel profile.
when included, controlled by an “alarm” button serves the function of acoustic warning to indicate any dangerous situations during handling. Electric safety limit switch on the rotation movements, installed as standard to delineate the rotation field of the arm of the crane. Working on the auxiliary circuits at low voltage, two thresholds of intervention both in right rotation and left, also carries out the emergency function in safety if there is any breakdown or malfunctioning of the first threshold of intervention.
For the connection to the line there is:
- on the jib crane a main on/off line switch which can be padlocked
- on the bracket crane a connector block. Powered by alternate electric power with three-phase voltage + neutral + earth (- 3+N+T).
360° Electrically Rotated Jib Cranes
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GBR column-mounted series, electrically rotated 360°
Series GBR: 360° slew
The GBR series electrically rotated jib cranes are used to handle loads whose mass (high or bulky) does not allow manual handling. They are also used when fixed obstacles impede the practicability of the working surface. They are the ideal solution for handling:
- in outdoor squares or deposits
- on wharves, to load and unload materials for watercraft
- on wharves to haul boats
- on loading ramps, f o r handling materials for lorries
- for services of big operating units or assembling machines
- Available as standard for lifting loads from 1000kg to 10.000kg and jibs from 4m to 10.5m.
Made of press-forged steel section welded to the tubular structure with polygonal section it allows a high rigidity and stability; it is fixed with a base plate and a system of bolts and logbolts. The upper part is fitted with a flange for fixing the rotation thrust bearing.
This is formed by a supporting girder and, in relation to the lifting capacity and/or the jib length, can be made with an H beam or with a box beam designed to guarantee the maximum flexotorsional stability. In the construction of the box beam high-quality section steel is used and welding carried out with continuous line procedure to ensure optimal safety conditions and operative reliability of the crane. It is fitted with a flange with holes for the application of the thrust bearing to which it is fixed using high resistance bolts. The rotation of the arm of the crane, which is mounted on a rotating thrust bearing, is ensured via a motoreducer. The circular area served by the arm can, according to necessity, be limited by electrical limit switches, or allow continual rotation, without end, of the arm itself in both directions by a collector ring.
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Base bearing or thrust bearing, able to support both axial pushes, due to vertical forces and the tilting momentum due to the movement.
fitted on the arm, fitted with a selfbraking motor with progressive start-up and braking where the sprocket, keyed on the slow shaft, fits together with the internal toothing of the thrust bearing to which it gives movement.
The foundation frame with log bolts is supplied, on request, for fixing the column to the base (foundation plinth).
Electrical power supply:
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Made for powering the hoist and trolley which run along the arm of the crane as well as to power the rotation motoreducer and includes two electrical control panels, one to control the lifting and moving on board the trolley/hoist unit, while the control apparatus of the rotation motoreducer is integral with to the arm. Inside the panels there are the contactors for the control of all the movements of the crane, as well as protection fuses against short circuits. The control circuits are at low voltage obtained via a transformer protected by fuses. A connection terminal box, with numbered terminals, ensures simplicity and safety of the cabling of the cables relative to all the external functions making any inspection easy to perform.
Alternatively, on request, the crane can be supplied with one electrical panel only made of press-forged sheet, which contains the contactors and the timers to control all the movements of the crane, as well as protection fuses against short circuits. The control circuits are low voltage. A connection terminal box ensures simplicity and safety of cabling of the cables relative to all the external functions making any inspection easy to perform. The electrical line to power the trolley-hoist formed of flat flexible multipolar cables festooned on the trolleys which slide inside a channel section.
A hanging push-button control panel, with a shockproof thermoplastic casing, sliding, along the crane girder, via trolleys inside a channel section using festooned flexible multipolar cable. It is supported by a self supported round multipolar cable.
It is generally fitted with a connector with fast connectors and obliged polarity, to make assembly and replacement easier. Acoustic alarm, when necessary, controlled using an “alarm” button it serves the function of acoustic warning to indicate any dangerous situations during handling. Rotating collector ring installed when the arm of the crane is free from obstacles in every point of its rotation and the arm itself is required to rotate continuously in both directions. Electric safety limit switches on the movements of rotation installed to limit the rotation field of the arm of the crane. Acting on the low voltage auxiliary circuits, with two intervention threshold both rotating right and left and it serves the function of emergency in safety in case of any breakdown or malfunctioning of the first intervention threshold.
Quality Jib Crane Systems from a Leading Company
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SELS offers a product which is always in line with the most modern international regulation standards.
The range of products covers every aspect of industrial lifting offering unbeatable value for money together with pleasing, professional design. The electric chain hoists, the manually and electrically rotated jib cranes, the wire rope hoists, the suspended modular systems and the drive units are all a safe, reasonably-priced choice for every situation.
The special versions of each product, on request some also with CSA/UL homologation, complete the range guaranteeing an answer to the most varied and specific application needs. The constant attention paid by SELS to the maximum satisfaction of its clients is focused on creating a long-term relationship of mutual esteem and trust thanks to the flexibility and promptness of its organisation and the direct personal touch. The after sales service aims to resolve problems immediately whether they involve spare parts, assistance or guarantee.
SELS offer competence, flexibility and innovative technology and planning. The experience gained in long years of qualified presence in the sector and the precise will to tackle without compromise the problems related to safety and conformity to regulations are a guarantee.
Safe Use of Jib Cranes - When Using a Jib Crane:
When using a jib crane always:
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- Store and handle jib cranes correctly.
- Inspect the jib crane, block and accessories before use and before placing into storage.
- Position the jib arm so that the lifting appliance is directly over the load.
- Take the weight of the load gently.
- Ensure the travel path is clear before slewing the crane.
- Push rather than pull the load when slewing the jib arm.
When using a jib crane never:
- Shock or side load jib cranes.
- Attempt to drag loads along the ground.
- Allow persons to pass under suspended loads.
- Place ladders or climb on unrestrained jib arms.
Using Jib Cranes Safely
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Please note that these instructions are not exhaustive; and they may not be appropriate for all pieces of equipment or applications. Always refer to the manufacturers instructions for your specific equipment. if you are still unsure always consult an appropriately qualified individual.
- Do not use defective jib cranes, blocks or accessories.
- Position the jib arm carefully. The block hook must be directly over the centre of gravity of the load. Do not use the jib arm or appliance to drag loads along.
- Take the load gently and avoid shock loads. Similar care is needed when lowering loads as sudden loading/unloading may cause the jib arm to whip.
- Before moving the jib arm or suspended load ensure you have a clear view of the travel path and that this is free of any obstructions etc.
- Avoid swinging loads.
- Push rather than pull on suspended loads.
- Do not let trolleys crash into the travel stops as the load may whip outward thus increasing the effective radius and therefore the resultant loads imposed on the mechanisms and structure.
- Lubricate bearings and pivot points. Where the slewing motion is obtained by manual gears or powered drive, the gear wheels and drives must be kept in good order and lubricated.
- Bolts and fixings should be checked to ensure they are tight and if necessary re-torqued.
- The running surface of the track should be clean and kept free of debris etc.
- Regularly inspect the jib crane and, in the event of the following defects, refer the jib crane to a Competent Person for thorough examination: structural defects, damage, distortion or cracked welds; loose or missing bolts; damaged or missing runway end stops; difficulty in slewing or jib arm slews on its own; difficulty in moving trolley or trolley moves on its own; any other visible defects or operational difficulties.
Selecting the Correct Jib Crane
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Jib cranes are available in a range of capacities, sizes and design options. Select the jib crane to be used and plan the lift taking the following into account:
- Type of jib crane - over braced, under braced - floor or wall/column mounted - capacity - height and length.
- Slew - angle of slew, 360°, 180° or other - push/pull, hand geared or power slewing.
- Type of block and trolley to be used.
- The need for slewing stops.
Storing and Handling Jib Cranes
When not in use jib cranes should be positioned so as not to present a hazard to persons, goods, vehicles etc that may be in the area. It may be necessary to secure the jib arm to prevent movement taking place as the result of winds etc. If the jib crane is not in regular use it is advisable to remove the lifting appliance for separate storage. Where this is not possible or desirable the appliance should be parked where it will not present a hazard.
Installing and Commissioning of Jib Crane
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Follow the specific instructions for erection issued by the supplier as these will vary with the design. The overall stability and safety of a jib crane depends on its foundation or supports. When erecting to an existing structure it is important that the superimposed forces are assessed by a qualified engineer and written approval obtained. Similarly free standing jib cranes must be mounted onto a suitable foundation and a suitably qualified person should be consulted. In the case of jib cranes clamped to upright structural members, steps must be taken to prevent the clamp fixings sliding downwards.
In-service Inspection and Maintenance of a Jib Crane
The maintenance requirements may be combined with those of the lifting appliance.