Resistance Box

Resistance Boxes, offered by Zam Zam Engineering Industries , are made of stainless steel punched plate type and stainless steel wire grid type. The Resistance Boxes, which we are offering, are manufactured with utmost precision, which assures their dependability for a long run. Based on this feature, we are positioned on top among the listed supplier of Resistance Boxes.

Compatible with
• Motor HP
• Rotor Volt
• Rotor Amperes
• The grids of our starting resistors are made from stainless steel and punched steel sheet

Characteristics
• Highly mechanical
• Loss temperature co-effi cient of resistance
• High resistively
• Easy adjustability
• Requirement of less space
• Long life etc

Applications
• E.O.T Cranes
• Rolling Mills
• Steel Plants
• Flour Mills
• Cement Plants
Power Plants
• Coil Mines
• Induction furnaces
• Steel rolling mills
• Heavy engineering industries

Master Controller

The enclosures of Master Controllers are made from different materials like reinforced sheet steel and aluminum. Master Controllers, offered by Zam Zam Engineering Industries, have covers, which can be easily removed. Master Controllers are also acknowledged for their proper space, which allows easy maintenance.

• Controls the whole system of crane
• Current capacity of 40Amps to 500volts AC
• Contact block assay
• Tips are made of high-grade silver cadmium oxide alloy
• Long Life
• Easy Maintenance
• Wide Electrical
• Clearance

Used for
• Remote operation of contractor equipment controlling heavy duty E.O.T. Cranes & Rolling Mill Drives etc.

Applications
• Induction furnaces
• Steel rolling mills
• Heavy engineering industries


Rotary Geared Limit Switch

Electro Hydraulic Thruster Brakes

Introduction :
Thruster brake is a device to retard the speed of moving machinery and to stop it accurately to the desired position. The braking force is applied to the brake shoe by a pre-stressed compression spring. The shoes press on the rotating brake drum retarding its speed and finally stopping it. The releasing of the brake and compressing of the spring is done by the Thruster. The thruster shoe brake has a pair of cast iron shoes which are lined up with friction pads. The shoes are hinged on the main arm and the side arm of the brake, each of them having a hinge pin fitted in the base. They are connected to each other on top by a tie rod, which is hinge in the main arm and locked to the swivel block in the side arm, by a lock nut. When the thruster motor is energized, the thrust provided by the thruster lifts up the crank lever which moves the arms and the shoe brakes away from the brake drum, and releasing the braking force. The spring is compressed and braking energy is stored for the next cycle.

Features :
• This is a spring loaded normally ON Failsafe Brake
• Consists of Electro Hydraulic Thruster, Torque Spring and Liner riveted to Brake Shoes
• Works on 415 V AC, 3 Phase, 50 Hz supply.
• Requires Transformer Oil to be filled in the thrust- er cylinder.
• Function is to bring to stop, moving / rotating machinery like motor / gearbox.
• Holds / stops the load in desired place. Instant stop.
• Prevents jerk due to soft stop.
• Maintenance free, robust design.
Range :
• Drum diameter 100mm to 600mm
• Thruster Capacity (Kg) : 18, 34, 46, 68, 114
• Torque Capacity : 6 Kgm to 580 Kgm
Applications :
• All Material Handling and Lifting Equipments
• Hoisting : electric wire rope Hoists and Crabs
• Cross travel and Long travel : EOT / Gantry / Goliath / Derrick Cranes
• Winches and Conveyors
• Lifts and Elevators