Magnetic linear encoder
Bogen LMSI magnetic linear encoder
Incremental linear magnetic tape scale with freely configurable pole pitch and up to nine tracks, supplied on long reels.
Need this part, a replacement or a better-fit option? Our engineers help with selection, procurement, sourcing, competitive pricing and lead times.
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Need Bogen parts, a replacement or another suitable option? Send your part number or describe the application. We’ll review the requirement and help with product selection, sourcing, pricing and lead times.
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Key specifications
| Accuracy | +/-3 to +/-100 um/m |
|---|---|
| Pole pitch | 0.5-20 (0.01 mm steps; std 0.5/1/2/2.54/5) |
| Max length | reels 25/50 m (brochure max 100 m) |
| Width | 5-25 |
| Temp | -40 to +100 C |
Series ranges as published; individual models vary. The full datasheet, drawings and CAD models are available on request.
Engineer support
Speak to our engineers about your project
Our experienced engineers are on hand, ready to help with your project. Whether you need the Bogen LMSI itself, help sourcing it, or a modified or custom design built around your load, speed and space, tell us what the machine has to do and we'll come back with the right option.
- Help sourcing LMSI and spares for installed machines
- Modified and custom designs when a catalogue part doesn't fit
- Complete axis: motor, drive, gearing and feedback matched together
Options
- 1-9 tracks
- reference mark
- cover tape (to 1500 mm)
Typical applications
What a magnetic linear encoder is
A magnetic linear encoder reads position from a magnetised scale, usually a flexible tape or a stainless-steel-covered strip with alternating poles, using a readhead with Hall-effect or magnetoresistive sensors. The readhead outputs incremental quadrature or analogue signals, or absolute position from a coded track. The scale can be cut to length and bonded to the machine, making long axes economical. Magnetic linear encoders tolerate dust, oil and coolant better than open optical systems.
When engineers choose a magnetic linear encoder
Choose a magnetic linear encoder for robust position feedback on long axes in harsh environments, such as woodworking, metal processing, packaging and linear motors on general automation. It is affordable and easy to install. The trade-offs are resolution and accuracy, which are typically lower than optical scales, and sensitivity to strong magnetic fields or ferrous debris. For precision metrology, optical or enclosed scales suit better.
How to specify the Bogen LMSI
Send these with your enquiry and an engineer can confirm the right LMSI variant:
- Resolution and accuracy (µm)
- Measuring length (mm or m)
- Absolute or incremental output
- Interface: TTL, sin/cos, SSI, BiSS
- Ride height and alignment tolerances (mm)
- Maximum speed (m/s)
- Environment and IP code
Common mistakes to avoid
- Exceeding ride height tolerances during installation
- Exposing tape to strong magnetic fields or magnetic tools
- Ignoring thermal expansion of the tape and substrate
- Expecting optical-grade accuracy
Bogen LMSI: frequently asked questions
Can you help replace Bogen LMSI or source the original?
Send the full model code, quantity and required date. Our engineers can check original-part availability and assess suitable alternatives, including Motion Control Products options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Bogen LMSI?
Incremental linear magnetic tape scale with freely configurable pole pitch and up to nine tracks, supplied on long reels. It is available through our supply network, and our engineers can confirm the right variant for your application.
Who makes the Bogen LMSI?
The Bogen LMSI is made by Bogen (Bogen Magnetics) available through our supply network. Send us your requirement for pricing, lead time, datasheets and CAD.
Is there an alternative to the Bogen LMSI?
We can assess suitable replacement options. Our engineers can review the original model and propose options for your load, speed and environment. An engineer confirms the fit against your application before recommending anything.
How accurate is a magnetic linear encoder?
Accuracy depends on the scale and readhead, but magnetic linear encoders are typically accurate to several micrometres or tens of micrometres per metre, with resolution down to around a micrometre. This suits general automation and woodworking. For sub-micrometre accuracy, optical scales are usually needed.
Can magnetic tape scales be cut to length?
Many magnetic tape scales are supplied on a reel and can be cut to the required length, then bonded to the machine with adhesive backing and a cover strip. This makes long axes simple and economical. Follow the manufacturer's handling guidance to avoid damaging the magnetisation.
Further reading: How to select a linear encoder · Magnetic vs capacitive vs optical encoders · Encoders and feedback
Often compared with
Engineers specifying this series often compare it with:
Other magnetic linear encoder series
Engineer support
Need Bogen LMSI or a complete system around it?
Tell us what you need, whether it is this part, an equivalent or a complete axis built around it. An engineer will review your requirements and reply, normally within one working day.
- Reviewed by an engineer, not an autoresponder
- Like-for-like and better-fit alternatives
- Standard, modified and custom options
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