Geared Rotary Limit Switch for EOT Cranes in India.
Standard Gear Ratio:
Plastic FG : 1:50, 1:100, 1:200, 1:400.
Sheet Metal/Aluminium Cast : 1:48 , 1:60 , 1: 96
Customized gear ratios for Rotary Limit Switch are also available.
Manufacturer and Supplier of FG Rotary Geared Limit Switch for Industrial Cranes
The FG Rotary Geared Limit Switch is an essential safety component for EOT cranes, electric hoists, and industrial lifting equipment. Designed with precision engineering, it ensures reliable control over movement limits and prevents mechanical damage. Built using durable materials and tested under industrial conditions, this switch provides consistent performance and long service life even in heavy-duty applications.
FG Limit Switches Dispatched
We are pleased to dispatch a fresh batch of FG Type Limit Switches today from Anand Systems Engineering Pvt Ltd. These heavy-duty rotary gear limit switches are engineered for precision control in EOT crane operations. Built with robust enclosures and tested for 500V / 10A, they ensure safety and accuracy in industrial movement limits. Proudly manufactured in-house and packed for reliable export delivery.
Why Choose FG Rotary Limit Switch?
- ✔️ Compact design and easy installation
- ✔️ Suitable for indoor and outdoor crane applications
- ✔️ Available in multiple gear ratios and contact configurations
- ✔️ Ensures precise motion control and enhanced safety
- ✔️ Designed and manufactured in India by Anand Systems Engineering
Working principle of rotary limit switch
A rotary limit switch works on the principle of a worm
drive .
A worm drive mechanism is suited so that enough torque is generated to move the attached gears within
the limit switch .
the shaft of the limit switch has threads which are matches and attached to a helical gear.
As the shaft rotates , the gear rotates according to the gear ratio.
The gears are attached to a cam mechanism which rotate along with the central gear, a rotary limit
switch has a minimum of two cams ,
one for setting the upper limit of the hoist machinery and one for setting the lower limit of the
hoist machinery .
Screws are provided for each cam .Each cam can be adjusted according to user requirements to fine
tune the upper and lower limit
these cams operate the contacts within the limit switch.
After the cam adjustment is done according to the user , as soon as the hoist machinery reaches the
upper vertical limit,
the cams operate the contacts which stop the moving machinery . The contacts can be of normal closed
(NC) or normally open (NO) type.
Once any limit is reached by the EOT crane , the crane will only be able to move in the opposite
direction thus preventing an accident.
Rotary Limit Switches are designed from the ground up for harsh Industrial Use.
Many Different models are available
FG50/SH/2 50:1, Contacts-2nos
FG50/SH/4 50:1, Contacts-4nos
FG100/SH/2 100:1, Contacts-2nos
FG100/SH/4 100:1, Contacts-4nos
FG200/SH/2 200:1, Contacts-2nos
FG200/SH/4 200:1, Contacts-4nos
FG400/SH/2 400:1, Contacts-2nos
FG400/SH/4 400:1, Contacts-4nos
GRLS/48/SH/2 48:1, Contacts-2nos
GRLS/48/SH/4 48:1, Contacts-4nos
GRLS/60/SH/2 60:1, Contacts-2nos
GRLS/60/SH/4 60:1, Contacts-4nos
GRLS/96/SH/2 96:1, Contacts-2nos
GRLS/96/SH/4 96:1, Contacts-4nos
Aluminium Die Cast Rotary Geared Limit Switch
Manufactured for Strength & Reliability
The Aluminium Die Cast Rotary Geared Limit Switch is engineered to provide precise motion control and reliable operation in cranes, hoists, and industrial lifting equipment. Designed for durability, it ensures maximum performance even under high load conditions.
Our rotary geared limit switches feature robust die-cast aluminium housings, corrosion-resistant finishes, and adjustable mechanical stops. They are widely used in material handling, overhead cranes, and automation systems where safety and accuracy are critical.
With customizable gear ratios and contact arrangements, these switches can be adapted to specific project requirements, providing seamless integration and long-term reliability. Ideal for industrial applications demanding high strength, precision, and safety compliance.
Product List of Rotary Geared Limit Switch
| Sr. no. | Product Name | Description | Part Number | Images |
|---|---|---|---|---|
| 1 | GRLS 48 Ratio 2C IP41 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 48, 02 CONTACT, 1NO + 1NC | GRLS/48/SH/2/41 | 
|
| 2 | GRLS 48 Ratio 4C IP41 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 48, 04 CONTACT, 2NO + 2NC | GRLS/48/SH/4/41 |
|
| 3 | GRLS 60 Ratio 2C IP41 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 60, 02 CONTACT, 1NO + 1NC | GRLS/60/SH/2/41 |
|
| 4 | GRLS 60 Ratio 4C IP41 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 60, 04 CONTACT, 2NO + 2NC | GRLS/60/SH/4/41 |
|
| 5 | GRLS 96 Ratio 2C IP41 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 96, 02 CONTACT, 1NO + 1NC | GRLS/96/SH/2/41 |
|
| 6 | GRLS 96 Ratio 4C IP41 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 96, 04 CONTACT, 2NO + 2NC | GRLS/96/SH/4/41 |
|
| 7 | GRLS 48 Ratio 2C IP55 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 48, 02 CONTACT, 1NO + 1NC | GRLS/48/SH/2/55 |
|
| 8 | GRLS 48 Ratio 4C IP55 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 48, 04 CONTACT, 2NO + 2NC | GRLS/48/SH/4/55 |
|
| 9 | GRLS 60 Ratio 2C IP55 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 60, 02 CONTACT, 1NO + 1NC | GRLS/60/SH/2/55 |
|
| 10 | GRLS 60 Ratio 4C IP55 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 60, 04 CONTACT, 2NO + 2NC | GRLS/60/SH/4/55 |
|
| 11 | GRLS 96 Ratio 2C IP55 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 96, 02 CONTACT, 1NO + 1NC | GRLS/96/SH/2/55 |
|
| 12 | GRLS 96 Ratio 4C IP55 | ROTARY GEARED LIMIT SWITCH WITH THE GEAR RATIO 96, 04 CONTACT, 2NO + 2NC | GRLS/96/SH/4/55 |
|
| 13 | FG50P2 | FG WORM DRIVE ROTARY GEAR LIMIT SWITCH WITH THE GEAR RATIO 50, 02 CONTACT | FG 50 P2 |
|
| 14 | FG50P4 | FG WORM DRIVE ROTARY GEAR LIMIT SWITCH WITH THE GEAR RATIO 50, 04 CONTACT | FG 50 P4 |
|
| 15 | FG100P2 | FG WORM DRIVE ROTARY GEAR LIMIT SWITCH WITH THE GEAR RATIO 100, 02 CONTACT | FG 100 P2 |
|
| 16 | FG100P4 | FG WORM DRIVE ROTARY GEAR LIMIT SWITCH WITH THE GEAR RATIO 100, 04 CONTACT | FG 100 P4 |
|
| 17 | FG200P2 | FG WORM DRIVE ROTARY GEAR LIMIT SWITCH WITH THE GEAR RATIO 200, 02 CONTACT | FG 200 P2 |
|
| 18 | FG200P4 | FG WORM DRIVE ROTARY GEAR LIMIT SWITCH WITH THE GEAR RATIO 200, 04 CONTACT | FG 200 P4 |
|
| 19 | FG400P2 | FG WORM DRIVE ROTARY GEAR LIMIT SWITCH WITH THE GEAR RATIO 400, 02 CONTACT | FG 400 P2 |
|
| 20 | FG400P4 | FG WORM DRIVE ROTARY GEAR LIMIT SWITCH WITH THE GEAR RATIO 400, 04 CONTACT | FG 400 P4 |
|
| 21 | FG12.5P4 | FG WORM DRIVE ROTARY GEAR LIMIT SWITCH WITH THE GEAR RATIO 12.5, 04 CONTACT | FG 12.5 P4 |
|
Applications of Rotary Limit Switch
Rotary Limit Switches are used whenever you need to count the angle or number of rotations and stop a rotating piece of equipment when it reaches it rotating limit.
EOT Cranes
Electric Hoists
Gantry Cranes
Goliath Cranes
Mobile Cranes
Tower Cranes
These rotary limit switches are widely used in crane manufacturing, material handling systems, and automation industries. They provide accurate rotational feedback and stop signals that keep equipment safe and reliable during continuous operation.
Anand FG Rotary Geared Limit Switch Technical Data Specifications
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| Body | Black Nylon | |
| Material Cover | Shock Resistance Thermoplastic | |
| Protection Degree | IP-55 Confirming to IS-13947(Part-1)1993: Dust ingress and protects against low-pressure water jet from any direction. | |
| Gear Ratio | 1:12.5, 1:25, 1:50, 1:100 & 1:400 | |
| Drive | Worm Screw | |
| Cable Entries | 2, 3/4 Conduit | |
| Rated Voltage Insulation | 500 VAC | |
| Thermal Test Current | 10 Amps | |
| Maximum Speed | 1200 rpm | |
| Wire Connection | Screw Terminal |
Rotary Geared Limit Switch – All Model 2D Drawings
2D Drawing of GRLS 48 Ratio 2C IP41
2D Drawing of GRLS 48 Ratio 4C IP41
2D Drawing of GRLS 60 Ratio 2C IP41
2D Drawing of GRLS 60 Ratio 4C IP41
2D Drawing of GRLS 96 Ratio 2C IP41
2D Drawing of GRLS 96 Ratio 2C IP41
2D Drawing of GRLS 48 Ratio 2C IP55
2D Drawing of GRLS 48 Ratio 4C IP55
2D Drawing of GRLS 60 Ratio 2C IP55
2D Drawing of GRLS 60 Ratio 4C IP55
2D Drawing of GRLS 96 Ratio 2C IP55
2D Drawing of GRLS 96 Ratio 4C IP55
Frequently Asked Questions
Q1: What is the purpose of a rotary geared limit switch?
A rotary geared limit switch helps control and restrict the motion of hoists, cranes, and winches, ensuring they stop safely when a preset limit is reached.
Q2: Can FG Rotary Limit Switches be customized?
Yes, we provide customized gear ratios and contact arrangements based on project requirements and crane type.