- Lifting Gear Direct

Units 17 & 20 The Wallows Industrial Estate
Fens Pool Avenue, Brierley Hill
West Midlands DY5 1QA
Tel : 01384 76961 Fax : 01384 75181

About Overhead Cranes

Overhead cranes raise, shift, and lower loads with a projected, swinging arm or a hoisting apparatus supported on an overhead track. There are many different types of products. Overhead cranes or bridge cranes attach a horizontal load-carrying beam to wall columns (overhung) or the underside of the ceiling (underhung).

Overhead cranes differ in terms of product specifications, features, and applications. Performance specifications to consider include load capacity, vertical available lifting height, and horizontal available span. Overhead cranes with wheels are designed for load transport and positioning. Typically, these machines are equipped with a brake or stabilizing outriggers. Overhead cranes that provide motorized motion move loads with a motor instead of manual pulling. With some applications, an industrial pendant is used to enable an operator to actuate lift or trolley travel. There are many different sizes of overhead cranes.

Overhead Cranes

Many overhead crane models exist, all offering unique advantages according to the application. The single girder overslung crane, is possibly one of the most popular. Also available are double girder cranes and underslung cranes. Electrically motor driven end carriages and hoists, provide effortless accuracy when lifting and positioning heavy components and plant in machine shops, factories, warehouses, loading bays, etc.

Multi-functional controls are usually housed in a single control box. Operational control can be via suspended pendant, alternatively static pendant, remote or automatic controls can be fitted. There are a number of safety devices i.e. limit switches, warning lights, horns and anti-collision units, available to guarantee operator and pedestrian safety.

Product Range

Standard Cranes 4 - 4000
Heavy Duty Cranes 5 - 5000
Double and Single girder cranes
Hand operated cranes
Jib Cranes
Crane Kits

Standard Cranes

Externally mounted motors allow for better ventilation and ease of access during maintenance, giving faster turnaround times.
Reduced scheduled maintenance and emergency downtime
Hoist independently load tested to 125% and certified by tests undertaken in the workshop
Easily adjustable over-raise and over-lower limit-switches allow swift changes on-site
Primary braking operates directly on the gearbox for maximum safety - secondary braking optional.
Fail-safe braking system incorporating a manual-release mechanism for emergency lowering in the event of a power failure.
Low voltage control system is an additional factor in operator safety
High quality structural assembly ensures compliance with BS466 (ISO4301) and BS2573.
End carriages fabricated from rolled steel with internal diaphragms for high torsional resistance.
Travel wheels made from spheriodal graphite cast iron with a high tensile strength and a high resistance to impact loads.
Graphite material castings within the wheel material act as a lubricant, reducing wear of the wheels and track.
Live axle drive system and precise speed control on all motors allows for smooth and accurate movement.
Rapid access to spare parts
Crane configuration selected to meet needs of application including Single girder, Double girder, Underslung, Goliath and Semi-Goliath

Free Standing Cranes

Free standing cranes are usually supplied in standard sizes, but if the application requires it specific cranes can be designed to your needs.

Bespoke applications include wide spans and long downshops /lengths.

The versatility of the system means that if you have pillars or other obstacles the crane system can be designed to take account of these.

Electric Rope Hoists

The Range

Manufacture of the standard version electric rope hoists accounts for over 90% of the companys production. This fact confirms the validity and flexibility of the MISIA product, which is capable of adapting to many typical uses in industrial lifting operations without subjecting the user to special requirements.
The standard range includes 6 construction sizes for capacities from 800Kg to 40,000Kg with 2 or 4 rope falls, lifting speed between 1,5 and 12 m/min and with feet suitable for "supported" or "suspended" mounting (for staionary or trolley mounting) A wide range of travelling trollets are also available in either double or monorail version with standard and low headroom.

Configurations

MISIA series M electric rope hoists are available in the following four standard versions:

Version S2 with 2 Rope falls for capacities from 800kg to 10,000kg "supported" or "suspended";
Version S4 with 4 Rope falls for capacities from 1600kg to 20,000kg "supported" or "suspended", and for capacities from 20,000kg to 40,000kg "supported" only.

Gearbox(1)
The 2 or 3-stage planetart gear reduces the speed of the electric motor
to the RPM necessary for the drum.
All gears of the planetary gear are made of hea-treated high quality steel.

Electric brake motor(2)
Three-phase asynchronous 1 or 2-speed motor with cone rotor and integrated
cone brake driven by a coil spring.
The brake release is due to the sliding of the rotor after switching-on of the power supply.

Rope guide (3)
The rope guide basically consists of two parts: a guide ring and a pressure spring that properly guide the rope on the drum grooves.
The guide ting maintains the rope in position during the incoling, preventing it comming-off the groobe and, when the load oscillates, is guided by a fixed bar and runs on bearings.

Load limiter (4)
All "M" series hoists with 2 and 4 rope falls are equipped with a load limiter with
3 reaction thresholds.
The load limiter consists of an
electric-mechanical system with pre-set springs acting on two microswitches
stop all movements, exception made for the lowering of the load.
The first threshold activates a WARNING, the 2nd stops the function.

Low headroom trolleys (5)
Low headroom trolleys are equopped
with 2 travel units, consisting of
planetary gears with double speed
brake motors directly flanged to
the wheels, therefore without
external teeth.