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ENThe all-inclusive powerhouse
Highly integrated wheel hub drive with Plug & Play function
All functional elements in one compact system
Framo Morat has developed a highly integrated wheel hub drive that combines all functional elements, such as the wheel, a high-precision planetary gear, a powerful electric motor and a brake and electronics, into one all-inclusive solution. This modular and scalable system boasts high performance in a compact design and lets users make adaptations to the load capacity, torque, interfaces, sensor system and control profiles.
A high level of vertical integration in the component production, motor winding and assembly helps achieve short delivery times. When providing service and consultation, Framo Morat draws upon over 100 years of experience in gear technology and drive engineering and many years of industry expertise.
Wheel hub drive – Technical features
Maximum power density
High radial loads and constantly high acceleration and speed
Long service life
Drive system designed for efficiency with a long-lasting PUR wheel
Low level of maintenance
Components can be replaced individually thanks to the modular design
Intelligent drive system
Plug & Play function and a central parameter check using an optional sensor system
High level of integration
All functional elements housed in a compact space with minimal weight
Comprehensive communication
Comprehensive drive control system as an e-axle thanks to standard interfaces (e.g. RS485 or CAN)
Wheel hub drive – Design
- Powerful, replaceable PUR wheel
- Efficient planetary gear (1- or 2-stage)
- Separate wheel bearing
- Universal customer interface
- High-performance BLDC motor
- Integrated holding brake
- Integrated secondary
motor encoder (RS422)
- Industrial standard serial interfaces
(RS485 / CAN) - Integrated primary motorencoder,
SPI (internal) / SSI
(external) - Complete sealed system
Wheel hub drive – Dimensions
| Dim. | Values |
|---|---|
| L1 | 218 mm |
| L2 | 196 mm |
| L3 | 70 mm |
| D1 | Ø 160 mm |
| D2 | Ø 92 mm |
| D3 | Ø 136 mm |
| B1 | 50 mm |
| B2 | 120 mm |
| B3 | 120 mm |
| S1 | 160 mm |
| S2 | 75 mm |
| S3 | 183 mm |
| S4 | 100 mm |
Wheel hub drive – Performance data
| 1-stage drive | 2-stage drive | |
|---|---|---|
| Power continuous operation (S1) | 360 W | |
| Power intermittent operation (S3) | 660 W | |
| Max. power *1 | 1300 W | |
| Nominal voltage | 48 VDC | |
| Nominal current | 20 A | |
| Max. power consumption *2 | 35 A | |
| Brake holding torque *3 | 2,2 Nm | |
| Brake nominal voltage | 48 VDC | |
| Encoder | Contactless, absolute angle sensor (up to 14-bit) | |
| Encoder communication | Serial SPI, incremental ABZ interface (12-bit) and SSI output (14-bit) | |
| Max. speed *4 | 8 km/h | |
| Max. acceleration *5 | 1 m/s2 | |
| Acceleration (80% of the load capacity) | 0,75 m/s2 | |
| Max. system speed *6 | 265 rpm | |
| Nominal torque *7 | 18 Nm | 21 Nm |
| Acceleration torque *8 | 36 Nm | 42 Nm |
| Emergency torque *9 | 54 Nm | 63 Nm |
| Protection class | IP54 | |
| Ambient temperature | 0 - 40° C | |
| Load capacity per wheel *10 | 500 kg | |
| Max. radial force per wheel | 5.000 N | |
| Max. axial force per wheel | 1.700 N | |
| Wheel diameter | Ø 160 mm | |
| Wheel width | 50 mm | |
| Hardness of tread | 92° Shore | |
| Rolling resistance | 65 N | |
| Friction coefficient | > 0,25 | |
| Drive weight *11 | 9 kg | 10 kg |
*1 – Maximum electrical power at stall torque
*2 – Maximum current consumption during the test cycle
*3 – Holding torque based on input side
*4 – Recommended maximum speed
*5 – Max. acceleration based on empty run
*6 – Corresponds to 8 km/h at Ø160 mm
*7 – Nominal values are based on a service life of 30,000 h
*8 – Max. 250 cycles per h, T2B proportion <5% of the total running time
*9 – Max. 1000 cycles during the entire service life
*10 – The load capacity specifications of the wheel manufacturer may vary
*11 – Drive weight based on condition upon delivery
All in one – one for all
Hub gearboxes – Platform and customer-specific adaptations
Besides the complete drive system, hub gearboxes from Framo Morat have proven their utility in connection with other motors, brakes & controlers, in wheel drives for driverless transport systems thanks to their compact design, which is achieved by integrating the planetary stage into the impeller. The advantageous arrangement of the bearings and the direct transmission of force into the vehicle frame enable high radial loads.
To facilitate short delivery times, the hub gearboxes are available in the NG250 and NG500 variants, each in single- and double-stage versions with polyurethan wheels. The low-maintenance design makes it easy to change the wheel. Customer-specific adaptations, such as a brush seal for outdoor applications or a toothed belt for use in high-bay warehouses, can be made upon request. Further information about the hub gears you’ll find at the Framo Morat website.
