eWheel – Overview
The eWheel from b-drives transports large loads safely and autonomously in confined spaces. As the most compact wheel drive system on the market, it easily adapts to your design requirements. Despite its compact size, eWheel offers impressive power density and high efficiency, which maximizes vehicle availability.
Our assembly concept enables quick wheel changes – loosening three screws is all that is needed to change the wheel in seconds. A modern BLDC motor with redundant encoders ensures a reliable drive, and the overload capacity is evident during acceleration and on inclines.
And the best thing is: our innovative wheel drive system sets a cost benchmark for AGV drive systems.
| eWheel | Unit | S | M | L | XL |
|---|---|---|---|---|---|
| Construction length | mm | 109 | 199 | 219 | 238 |
| Maximum speed | m/s | 0,7-3,0 | 1,0-3,7 | 1,0-3,7 | 1,0-3,7 |
| Maximum torque | Nm | 29-90 | 21-54 | 35-90 | 35-100 |
| Nominal voltage | V | 24/48 | 24/48 | 24/48 | 48 |
| Motor protection class | IP00 | IP54 | IP54 | IP54 | |
| Wheel protection class | IP69 | IP69 | IP69 | IP69 | |
| Wheel diameter | mm | 140/160/200 | 140/160/200 | 140/160/200 | 140/160/200 |
| Parking brake with emergency stop function (motor) | Nm | 1-3 | 1-3 | 1-3 | 1-3 |
| Redundant feedback with Hall sensors and incremental encoder | ✓ | ✓ | ✓ | ✓ | |
| Payload per wheel | kg | 500kg | 500kg | 500kg | 500kg |
| Wheel material | Vulkollan® 92° Shore A | Vulkollan® 92° Shore A | Vulkollan® 92° Shore A | Vulkollan® 92° Shore A | |
| Options | |||||
| Functional safety STO PL e | ✓ | ✓ | ✓ | ✓ | |
| Safety encoder attachment | x | ✓ | ✓ | ✓ | |
| Application-specific wheel surface | ✓ | ✓ | ✓ | ✓ | |
| Attachment to the vehicle | from the vehicle exterior/interior or above the drive using a mounting bracket | from the vehicle exterior/interior or above the drive using a mounting bracket | from the vehicle exterior/interior or above the drive using a mounting bracket | from the vehicle exterior/interior or above the drive using a mounting bracket |
Product options
- drive control,
- wheel tread,
- Assembly flange,
- and brake
control electronics
Double-axis controller
Voltage resistance up to 60V
Peak current up to 60A Bus interface
CANopen (other solutions with
ProfiNET/EtherCAT possible)
Functional safety STO according to PL e / up to SIL3
Complete system
Shortest overall length High overload
High power density
Low dead weight
High efficiency
500 kg load capacity per wheel.
wheel
3 different
wheel diameters
Standard wheel tread:
Vulkollan® 92° Shore A
Application-specific
wheel treads possible
Gearbox
Planetary gear
reduction ratios:
i = 11 / i = 20 / i = 30
BLDC motor
Sizes S/M/LXL
Redundant encoder system
High-resolution
brake
Holding brake with
emergency braking function. Choice
of braking torque:
1 Nm/ 2 Nm / 3 Nm
Wheel covering
Our standard wheel covering is made of Vulkollan® with a hardness of 92° Shore A. However, wheel coverings made of Vulkollan® 70° Shore A or other crowns are also conceivable and possible. Vulkollan® is a polyurethane traded by the company Covestro AG. Other materials and Shore hardnesses proven in intralogistics are also possible.
Assembly flange,
With our eWheel, we offer you the option of either mounting it yourself from the outside or from the inside of the vehicle.
This type of mounting is always provided and is part of our standard program.
You choose the mounting direction, whether you want to screw the eWheel on from the outside or the inside. On this basis, we then select the appropriate mounting flange during production.
In addition to our eWheel, we can also offer you a standardized mounting bracket to attach our eWheel conveniently under your vehicle chassis. This allows you to simply screw the AGV/AGV above our eWheel.
Drive controller
Our double-axis controller has STO (Safe Torque Off) in accordance with PL e and can therefore be a component of your functional safety concept for your AGV. The controller is voltage-resistant up to 60V with a peak current of 60A. Our standard interface for the double-axis controller is CANopen. You therefore need one dual-axis controller for two eWheels per AGV.
Do you have any questions or would you like advice?
We will be happy to answer any questions you may have and look forward to hearing from you.
You can reach us Mon – Thu from 8 am to 5 pm and Fri from 8 am to 2 pm.
