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Bearingless encoders for factory and outdoor automation

Magnetic, absolute durability

Completely wear-free thanks to contactless scanning and bearingless design
Absolute encoders single- and multiturn
Ideal for Mobile Machines or outdoor applications
All standard fieldbus/Ethernet interfaces for factory automation
Easy integration due to compact designs

Multiturn encoders – compact, robust, precise

EB360

Single and multiturn positioning
CANopen, SAE J1939 & SSI interface
Extremely robust even under the toughest conditions in outdoor use
Protection class up to IP69K, additionally thermal shock dunk tested
Immune to shock and vibration
Installation depth only 22 mm

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Multiturn encoder – large selection of interfaces

EAM360-K & EAM580-K

Single and multiturn positioning
Analog, CANopen, SAE J1939, SSI, PROFINET, EtherCAT, EtherNet/IP interface
For outdoor use and factory automation
Protection class up to IP67
Size (flange) ø36 mm or ø58 mm
E1 approved variants

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Singleturn encoder – low installation depth

EAM500R

Absolute position monitoring up to 360°
Installation depth 10 mm
CANopen & analog
Redundant variants
Up to IP69K
Corrosion protection CX (C5-M)

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Singleturn encoder – space-saving, with analog output

MDFM / MDRM

Singleturn positioning up to 360 °
Analog interface
For factory automation
Protection class up to IP67
Extremely compact rectangular or cylindrical design

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Your benefits

Compact machine design
- On-Axis encoders operate on axial sensing, which makes them ideal for applications where space around the shaft is limited
Reliable long-term operation even under extreme conditions
- Robust magnetic sensing fully free from wear
- Resistant to dirt, vibration and shock
- Immune to bearing loads
Immune to shaft currents
- Particularly in rotary encoders installed at powerful electric drives, ball bearings may be damaged by shaft currents
- The sensor head being decoupled from shaft will solve the problem
Long-term high IP protection
- The bearingless design allows for high and yet cost-efficient IP protection
- Even at high speed the encoder is protected against water and dust ingress
- Improved robustness by electronics being decoupled from moving parts
Designed for mobile automation
- High EMC robustness thanks to E1-compliant design
- Wire cross-section of 0.5 mm² for optional pre-assembly of automotive connectors (DEUTSCH, etc.)

Applications

Steering angle detection for AGVs

Wear-free singleturn or multiturn absolute systems
The right interface for AGV control
Additional incremental output available
Various encoder designs for easy integration

Measurement of container inclination angle in garbage trucks

Reliable absolute measurement even in dirty and damp conditions
Measurement is not affected by changes in distance between sensor and magnet within the specified measuring range
Easy integration even in very limited spaces because the electronic assembly is completely integrated in the sensor housing

Output of current crane rotary angle

Reliable position sensing even in case of a power failure thanks to absolute operating principle
Vibrations and strong crane forces do not affect the sensor thanks to contactless operation
Easy integration even in very limited spaces because the electronic assembly is completely integrated in the sensor housing

Tension control via dancer arm rotary angle

Contactless alternative to mechanical potentiometers
No wear despite uniform movements
High control quality thanks to short response times and high resolution

Technological highlights

Magnetic sensing requires no bearings between sensor head and material measure (here a center magnet). This way they can be positioned separated from each other. This allows for rather high mounting tolerances and increased flexibility in design and mounting. As there is no need for bearings, there is no conventional wear and tear either. This way the encoders are immune to dust, dirt, textile fibers, shaft currents or bearing loads and robust against vibration and shock.

Immune instead of robust

Thanks to magnetic sensing, bearingless encoders are immune to wear and disturbances caused by dust, dirt or fibers
The encoders achieve particularly high protection classes even at high speeds, as they do not require a complex impermeability concept without bearings
In addition, the encoders can be integrated into the machine design so that they are better protected against mechanical impacts
High speeds and long service life are easily compatible, as self-heating and wear of ball bearings are eliminated

Functionality of axial sensing

Axial sensing requires a sensor head and a center magnet
The center magnet is attached centrally to the shaft end
The magnet consists of a pair of poles and provides an absolute signal with each rotation
An internal signal processing generates up to 16384 steps from the SinCos period

Mounting with axial scanning

When mounting the magnet, make sure that the magnetization direction of the permanent magnet (north-south pole) is aligned parallel to the active surface of the sensor
The permanent magnet should not be installed in ferromagnetic materials such as steel, as otherwise the working distance may be negatively affected

Permanently high IP protection class

Bearingless encoders easily achieve a high IP protection class, especially at high speeds
Without bearings, they do not require a complex sealing concept
The entire measuring system has no wearing parts, making the encoders extremely durable
In addition, magnetic sensing is very robust against shock, vibration, dirt, dust and textile fibers
Seawater-resistant options are available with HeavyDuty encoders

Downloads

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Brochures / Catalogs

Brochure – Selection Guide Encoders and angle measurement

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