content provided by balluff

Balluff’s magnetic field sensors can be used on ANY pneumatic cylinder with a C-slot, regardless of the manufacturer. The universal design replaces several previous versions. Using fewer sensor variants reduces inventory needs and, therefore, costs.

They were designed for space-critical applications.

  • Flush-mountable
  • Available in multiple sizes, including an extremely shot version

Holds securely and monitors reliably

BMF magnetic field sensors for the C-slot from Balluff are mainly used to monitor the piston position on cylinders and grippers. The sensor detects the field of the magnet integrated in the piston through the cylinder wall. Thanks to this non-contact position detection, the sensors function wear-free and reliably, even at high travel speeds.

The correct sensor for every cylinder

Thanks to a special sensor element, the magnetic field sensors can be used on any cylinder regardless of the manufacturer. Less really is more now: the newest models replace several of our magnetic field sensors for the C-slot at once, which means that almost all cylinder sizes and makes can be covered with fewer designs.

Flexible integration options

With just a few mounting and retaining materials, the magnetic field sensors can be securely attached to any pneumatic cylinder with a C-slot. Flush-mountable, they are also suitable for space-critical applications. Since they can be inserted from above, the magnetic field sensors also fit where groove ends are closed and lateral insertion is not possible. In addition, Balluff offers extremely short designs for short-stroke cylinders.

Reliably detect end position

In welding systems in the automotive industry, hold-down devices hold the sheets in the desired position during the welding process. A BMF magnetic field sensor integrated into the groove detects the piston end position on the hold-down pneumatic cylinder, thus ensuring smooth processes.



  • Quick assembly, firm hold
  • No contact burning, bouncing or sticking
  • Only one switching point (with LED display)
  • Applicable for cylinders and grippers with strong or weak magnets
  • IP67: insensitive to dirt
  • Suitable for ambient temperatures –25...+85 °C