Product Description
I-MAK IRC Series Gear Units
The I-MAK IRC Series Gear Units are three-stage geared drives developed for lifting and hoisting technology. Moreover, their compact construction supports demanding applications where controlled low-speed movement and high output torque are essential.
The published range supports motor powers from 0.37 to 45 kW. In addition, available configurations provide output speeds from approximately 7 to 59 rpm.
Therefore, the I-MAK IRC gearbox range suits cranes, hoists, winches and material-handling equipment that require dependable operation and efficient use of installation space.
Three-Stage Gear Design
The I-MAK IRC Series Gear Units use three successive gear stages to reduce motor speed. Consequently, each stage contributes to the total reduction ratio and increases the available output torque.
This arrangement allows a standard electric motor to drive slow-moving lifting equipment. As a result, an IRC hoist gearbox can raise, lower or position loads with greater control.
Moreover, the three-stage layout fits inside a compact housing. Therefore, the gearbox suits lifting machinery where available installation space is limited.
Key Benefits of the I-MAK IRC Gearbox
The I-MAK IRC Series offers several practical advantages:
- Three-stage gear construction
- Developed for lifting and hoisting systems
- Motor powers from 0.37 to 45 kW
- Output speeds from approximately 7 to 59 rpm
- Maximum output torque up to 19,200 Nm
- Output shaft diameters from 35 to 120 mm
- High mechanical efficiency
- Compact, space-saving design
- Quiet operation
- Broad reduction-ratio range
- High service-factor options
- Low routine maintenance requirements
- Multiple sizes for different lifting duties
- Suitable for crane, hoist and winch applications
Together, these features support dependable lifting performance. Moreover, the broad torque and shaft range allows engineers to match an I-MAK IRC Series Gear Unit with different load capacities and drum dimensions.
Available IRC Gear Unit Models
The I-MAK IRC range includes:
- IRC 63: Up to 350 Nm; 35 mm shaft
- IRC 73: Up to 800 Nm; 45 mm shaft
- IRC 83: Up to 1,500 Nm; 50 mm shaft
- IRC 93: Up to 3,500 Nm; 70 mm shaft
- IRC 103: Up to 7,500 Nm; 95 mm shaft
- IRC 123: Up to 10,400 Nm; 110 mm shaft
- IRC 143: Up to 19,200 Nm; 120 mm shaft
Therefore, smaller IRC gear units suit lighter lifting equipment. In contrast, larger models support heavier cranes, winches and industrial hoists.
However, the maximum permitted load depends on more than gearbox torque alone. Consequently, users must also verify the drum diameter, reeving arrangement, lifting speed, operating duty class and required safety factors.
Controlled Low-Speed Operation
Hoisting equipment normally requires lower speeds than a standard electric motor provides. Therefore, the I-MAK IRC Series Gear Units reduce motor speed to a controlled gearbox output.
For example, an IRC gearbox can drive a rope drum used to raise or lower a load. Similarly, it can power an industrial winch that requires controlled pulling force.
Moreover, low output speeds help operators manage load movement more accurately. As a result, the lifting system can support smoother starts, stops and positioning when paired with suitable motors, brakes and controls.
High Efficiency and Quiet Performance
I-MAK identifies high efficiency as a principal advantage of the IRC Series. Therefore, the gearbox can transmit a large proportion of motor power to the lifting mechanism.
In addition, precision gear engagement supports quieter operation. Consequently, an I-MAK IRC hoist gearbox can suit indoor factories, warehouses and production facilities where excessive drive noise may be undesirable.
However, correct alignment, lubrication and installation remain essential. Otherwise, poor mounting can increase vibration, heat and operating noise.
Compact Hoist-Drive Construction
The compact housing of the I-MAK IRC Series Gear Units reduces the space required around the lifting mechanism. Therefore, machine builders can integrate the gearbox into cranes, hoists and winches with restricted installation dimensions.
Moreover, a compact hoist drive can reduce the length of the complete lifting assembly. As a result, designers may achieve more efficient use of the available crane or machine structure.
Low-Maintenance Industrial Operation
I-MAK describes the IRC gearbox range as durable and low maintenance. Nevertheless, low maintenance does not mean maintenance-free.
Operators should regularly inspect:
- Lubricant condition and level
- Gearbox seals
- Mounting bolts
- Couplings and shafts
- Brakes and safety devices
- Operating temperature
- Abnormal vibration or noise
Consequently, planned inspection can identify developing problems before they cause lifting-system downtime.
I-MAK IRC Series Applications in India
The I-MAK IRC Series Gear Units suit many lifting and material-handling applications across India, including:
- Overhead travelling cranes
- Gantry cranes
- Industrial hoists
- Wire-rope lifting systems
- Winches
- Warehouse lifting equipment
- Manufacturing plants
- Steel-processing facilities
- Ports and logistics terminals
- Construction lifting machinery
- Material-handling systems
- Maintenance workshops
For example, an overhead crane can use an IRC gear unit to drive its hoisting drum. Similarly, an industrial winch can use the gearbox for controlled pulling or lifting.
Selecting the Correct IRC Gear Unit
Correct selection of an I-MAK IRC gearbox depends on:
- Maximum lifted load
- Required lifting speed
- Drum diameter
- Rope reeving arrangement
- Motor power and speed
- Required output torque
- Starts per hour
- Operating duty class
- Brake arrangement
- Required service factor
Therefore, users should complete a lifting-drive calculation before ordering. Otherwise, the selected gear unit may not provide the required safety margin or operating life.
Why Choose I-MAK IRC Series Gear Units?
The I-MAK IRC Series Gear Units combine high torque with compact three-stage construction. Moreover, their broad model range supports different lifting capacities, shaft dimensions and operating duties.
Therefore, the IRC Series is a practical choice for facilities across India that require efficient, quiet and dependable hoist-drive performance.
Request an I-MAK IRC Gear Unit in India
The I-MAK IRC Series range is presented through Pumps Bharat for crane, hoist, winch, warehouse, manufacturing, steel-processing and material-handling applications across India.
When submitting an enquiry, please provide the lifted load, lifting speed, drum diameter, reeving arrangement, motor power, operating hours and required duty class. With this information, the available I-MAK IRC Series configurations can be evaluated against the application conditions.