To meet operational requirements and improve production efficiency, many feeding systems utilize integrated gear reducer and motor assemblies. These gearmotor units ensure sufficient torque output and smooth operation during continuous production cycles. Recently, a Korean customer needed a precision motor reducer for their feeder application, specifically requesting a KKM helical hypoid gear reducer paired with a three-phase asynchronous motor to achieve 1100 Nm torque and an output speed under 20 rpm. Which reducer model should be selected? Let’s explore the proper selection process using the KKM reducer catalog.
Understanding the Selection Parameters
When the user has clearly defined the KKM helical hypoid reducer series and the required output parameters after motor-reducer integration, the selection process focuses on matching the appropriate motor power to the corresponding KKM gearbox model based on the specified output torque and output speed.
Calculating Required Motor Power
Using the standard 1400 rpm specification of a 4-pole (4P) three-phase asynchronous motor, we can calculate the required motor power through the following torque formula:
- Motor torque calculation: 16.5 Nm
- Calculated motor power: 2.4 kW
Based on these calculations, you can select either a 2.2 kW motor for standard applications or upgrade to a 3 kW motor if additional torque margin is desired for demanding operational conditions. Let’s examine both matching scenarios.
Option 1: 2.2kW Motor Configuration
When pairing a 2.2kW three-phase motor with the KKM helical hypoid reducer, compatible models include:
- KKM050B hypoid gear reducer
- KKM063B hypoid gear reducer
- KKM075B hypoid gear reducer
- KKM090B hypoid gear reducer
- KKM090C hypoid gear reducer
- KKM110B hypoid gear reducer
- KKM110C hypoid gear reducer
These right-angle gearbox models provide a wide parameter range with output speeds from 23 to 374 rpm. However, since the customer requires output speed below 20 rpm, this standard 4P motor configuration doesn’t immediately satisfy the specification.
Solution: Converting to a 6-Pole Motor
The configuration can be optimized by switching to a 6-pole (6P) motor operating at 960 rpm instead of the standard 4P motor. By selecting a KKM hypoid reducer with a reduction ratio between 48:1 and 50:1, and pairing it with a 6P 2.2kW motor, the system will achieve the customer’s low-speed, high-torque requirements below 20 rpm output.
Option 2: 3kW Motor Configuration
When upgrading to a 3kW three-phase motor, the compatible KKM helical hypoid gear reducer models remain similar:
- KKM050B right-angle reducer
- KKM063B right-angle reducer
- KKM075B right-angle reducer
- KKM090B right-angle reducer
- KKM090C right-angle reducer
- KKM110B right-angle reducer
- KKM110C right-angle reducer
However, the output speed range with a standard 4P motor configuration doesn’t significantly differ from the 2.2kW option, still failing to achieve the sub-20 rpm requirement. Therefore, the same 6-pole motor conversion strategy applies here as well.
Key Selection Considerations for KKM Hypoid Gear Reducers
When the customer specifically requires a KKM helical hypoid gear reducer, the motor-pole configuration becomes critical for achieving low-speed applications. Different feeder systems may have varying operational requirements, so throughout the entire gearmotor selection process, it’s essential to:
- Understand equipment parameter requirements – Torque, speed, duty cycle
- Analyze operating conditions – Load characteristics, ambient environment
- Consider reduction ratio options – High-ratio configurations for low-speed applications
- Evaluate motor pole configurations – 4P vs 6P for optimal speed matching
- Verify safety factors – Ensure adequate torque margin for peak loads
Professional Reducer Selection Support
Selecting the optimal gear reducer motor combination requires careful consideration of multiple technical parameters and application-specific factors. If you’re uncertain about the helical hypoid gear reducer selection process or need assistance determining the right gearbox model for your feeder application, please contact AU reducer technical specialists for expert guidance and customized solutions.
