The Rack & Pinion system is a simple system with 100 % efficiency to provide precise and positive control and operation for vertical transportation of men and material to a unlimited height. This is due to its unique modular range, in which fully tried and tested components can be combined to tailor exactly the right configuration to meet customers requirements, thereby combining the best value for money with safety in operation. Each and every Rack segment and Pinion is carefully machined to produce the highest quality components required for safe and positive operation.

1. No shaft is needed.
2. No machinery room is needed.
3. No ropes or sheaves are required.
4. Suitable for external and internal application.
5. Greater resistance to windy and hostile environment.
6. Higher factor of safety.
7. Low operation cost and minimum maintenance.
8. Easy erection from the Cage roof.

By virtue of its inherent advantages and Safety features the Rack & Pinion Elevators are widely used in the industry and are best suited for all types of industrial applications which include;

1. Power Plants for Chimney, Boiler and Coal Handling Plant.
2. Ports for Container Crane & Gantry Crane.
3. TV & Communication Towers.
4. Building Constructions.

Such Elevators have been supplied by MEKASTER to many Power Plants in India and are working satisfactorily. MEKASTER has introduced Elevators for Construction purpose and have supplied such Elevators of 1000kg and 1200kg carrying capacity for Building and Boiler construction and are giving their optimum performance to our valued customers. Our range of interchangeable and complementary modules of Rack & Pinion Elevator have set new standards in the industry.

1. Limit cams for automatic stop at top and bottom landings.

2. Safety hooks to prevent the car from climbing off the mast or to prevent the pinions from disengaging from the rack in case a counter roller or guide roller on the car comes off.

3. Heels on the machinery plate keep the pinion of the machinery and the safety device constantly engaged with the rack on the Elevator mast, in case a counter roller or a guide roller on the car comes off.

4. Interlocks : The car and landing doors are both electrically and mechanically locked to ensure proper safety.

5. Electro Magnetic Disc Brake :The non-driving end of the electrical motor is provided with an Electro Magnetic Brake which is normally in braked condition, and is only released when electric power is provided to the unit.

6. Centrifugal Brake :The worm screw of the reduction gear box is equipped with a centrifugal brake to prevent the safety device from tripping, in case of power failure, the car has to be taken down to the ground under gravity. This device also acts as an additional back-up safety system.

The Elevators work on the Rack & Pinion principle. The Rack and Pinion principle is simplicity beyond question with 100 % mechanical efficiency to provide precise and positive control in operations for transportation to unlimited heights.

The Elevators comprise of basically two main units :
(a) Car (Cage) with drive unit.
(b) Mast Structure.
The drive unit is attached to the main frame of the car on vibration dampning brackets. The drive unit gives a positive drive to the pinion through a vibration absorbing direct coupling and a worm and screw reduction gear box.

The Car operates on the mast and is guided by individually adjustable ball bearing guide rollers. The pinion meshes with rack on the mast thereby providing positive drive to the system. When electrical power is given to the motor, the motor drives the pinion which in turn drives the cage upwards or downwards. Control of the elevator is through push buttons i.e. "Semi Automatic Control System". Operation of the Elevator is possible from both the car as well as the landings. The mast structure on which the Car runs comprises of 1.5 m Long mast sections bolted together. Each mast section consists of lattice work of steel tubes and angle profiles welded together. These sections are provided with a precision cut rack with which the drive pinion meshes. The mast structure is bolted to the wall by bolts.

The Elevator is provided with top and bottom limit cams which actuate limit swithces attached to the lift car preventing over travel and causes the car to stop automatically at the top/bottom landings. Individual cams are provided on the mast for stopping the car at the intermediate landings.