Gunatit Electropower Private Limited

Application:

The new range of limit switches has been designed and manufactured according to safety standard are suitable for use on reversing drives such as hoists, cranes, winches and rolling mills.

 

Design:

The driving motion is transmitted by worm gear. All gears and hubs are made of low wear thermoplastic. The rotational movements are transmitted to switches by adjustable cams.

 

Driving cams:

Each lever has a single micro metric resister screw. This screw exclusively works on its own combined lever, excluding any mechanical contact with any other next to it. The regulation is easily made by use of screwdriver on a register screw. The special friction system assures a rapid and precise adjustment.

 

Technical Data:

• Body Material : Black Nylon
• Cover Material Yellow : Impact proof thermoplastic
• Protection Degree : IP-55
• Mounting Position : Any
• Gear Ratios : 1:12.5, 1:25, 1:50, 1:100, 1:200 & 1:400
• Drive : Worm Drive
• Cable Entries : 2, 3/4" Conduit
• Maximum Rotation Speed : 1200 rpm
• Contact Material : Double break silver cadmium
• Wire Connection : Screw terminal
• Rated Voltage Insulation : 500 V.A.C
• Thermal Test Current : 10 Amps

Key Features to Look For

When selecting a worm drive limit switch, focus on:

• Gear ratio (e.g., 48:1, 96:1) → affects accuracy & rotation range
• Number of contacts (2, 4, etc.) → determines control flexibility
• Current rating (10A, 40A) → depends on motor/control circuit
• Enclosure (IP rating) → dust/weather protection
• Mounting type → shaft coupling or chain-driven

GUNATIT ELECTROPOWER  is a trusted name in the industry that manufactures and suppliesMetal Body Lever Limit Switch that can be obtained at reasonable rates. The proposed selection of limit switches is widely recognized for its robust construction, high durability, ease of operation and effective rotation. Lever limit switches offered by us are provided in tamper proof packaging to avoid damage.

Weight Operated Limit Switches are used on control / power circuit of reversing drives so as to limit their rotation / movement within a predetermined position.

 

Operation:

When the snatch block of the crane reaches its top position the snatch block pushes a plate which is hanging from one end of the lever of the limit switch. Due to the weight placed on the other end of the lever this lever is pushed up. When the lever is pushed up the shaft to which this lever is connected rotates there by rotating the cams which eventually open the contacts and disconnect the motor. The electronic limit switch contacts are automatically reset when the lever returns to zero position due to gravitational force.

Electro hydraulic thruster brake
.
What is an Electro-Hydraulic Thruster Brake?

An electro-hydraulic thruster brake is a fail-safe braking system that uses a combination of:

• Electric motor + hydraulic system (thruster)
• Spring-loaded brake mechanism

👉 It automatically applies braking when power is OFF and releases when power is ON.

✔ Suitable for: 1–20 Ton cranes (depends on size)
✔ Voltage: 400–440V, 3-phase
✔ Drum size: 100 mm to 600 mm

Budget OptionElectro Hydraulic Thruster Brake for EOT Crane (Basic Model) · ₹7,000Affordable standard thruster brake for light-duty crane applications.

✔ Good for light-duty cranes

✔ Lower cost, basic features 

Rotary Gear Limit Switch is basically consists of heavy duty worm gear drive. The worm gear unit is built in a cast housing fitted on main body of Limit Switch. The cam shaft which extends from behind the gear in to housing, accommodates the cams adjustable actuators which are fitted on the cams. These actuators strikes the contact finger of respective contacts
 
Function:
Limit Switch is to stop the mechanism of drive at the extreme clock wise / anti clock wise position. These rotary limit switches are particularly suited for use on reversing drives such as electric hoists, winches, over head cranes and traverse.
 
Application:
Rotary geared type limit switches are suitable for use reversing drives such as hoists, winches, rolling mills and various other mechanisms used such used in steel plants such as coke oven and feeding machinery.

GUNATIT ELECTROPOWER is a trusted name in the industry that manufactures and supplies Eot Crane Lever Limit Switch that can be obtained at reasonable rates. The proposed selection of limit switches is widely recognized for its robust construction, high durability, ease of operation and effective rotation. Lever limit switches offered by us are provided in tamper proof packaging to avoid damage.