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Description
- Structure and specification
- Coding
- Installation
Product description
Structure and specification
The magnetic strip consists of three firmly glued components:
| 1) | Two-track magnetic strip made of plastic which holds the position information (scale), 1 mm pole width, distance-coded |
| 2) | Transfer adhesive tape with protective foil |
| 3) | Stainless steel flexible conductive strip |
| 4) | Track 1 (incremental side) |
| 5) | Track 2 (reference side) |
Pole search film
With the pin search film, the magnetization of the two-track magnetic strip can be checked.
Technical data
Coding
The magnetic strip has two tracks, with an incremental and a reference side. The incremental track comprises 1 mm increments. On the reference side, distance-coded reference marks are provided. The clear arrangement of the reference marks ensures that an absolute position is already available when two marks have been passed. Thus, measuring lengths of up to 17.8 m are possible.
The necessary minimum length 1) of the magnetic strip for evaluating the distance-coded reference marks is 400 mm. If the length of the magnetic strip is shorter than 400 mm, the measuring system may only be used as incremental measuring system without evaluation of reference marks.
1) The minimum length can also be shorter, depending on the mechanical design
| 1) | Incremental side |
| 2) | Reference side |
| Material | CPE with 90% strontium ferrite (magnet carrier) |
| Coding | Incremental, two-track system (reference track) |
| Pole pitch | 1mm |
| Reference track | Distance-coded, TR = 192 mm |
| Minimum length for the evaluation of the distance coding | 400mm |
| Operating temperature, processed | -20...+80°C |
| Optimum storage temperature, unprocessed | +18°C |
| Adhesion temperature | +18...+30°C |
| Humidity | Max. 95%, non-condensing |
| Accuracy | ±20µm/m |
| Carrier strip material | Precision steel strip, 1.4310 |
| Adhesive tape | 3M-9088 |
| Dimensions | Width: 8 / 10 / 12 mm ± 0.1 mm |
| Thermal expansion coefficient | α = 16 x 10-6 1/K |
| Thermal longitudinal expansion | In the glued-on condition, the longitudinal expansion of the magnetic strip corresponds to the one of the rail. With a massive substructure, the latter is in turn determined by the longitudinal expansion of the substructure. |
| Weight | Ca. 60 g /m |
| Impact of external magnets | External magnetic fields at the surface of the magnetic strip max. 64 mT (640 Oe; 52 kA/m) to prevent damage. |
| Bending radius | Min. 150mm |
Mounting
Mounting
The magnetic strip is mounted by adhesion of the rail slot. Before mounting, the correct mounting orientation is to be ensured since, with the mounted magnetic strip, the push-on direction and thus the position of the reference edge of the runner block are determined. A magnetic strip which has already been glued on is destroyed after its removal and cannot be re-used. Before the adhesion of the magnetic strip, the latter is to be stored near the rail (ideally in the slot) for approx. 30 minutes so that the temperature corresponds to the rail temperature and any tensions due to thermal expansion can be excluded. After mounting, the strip ends are to be secured with strip clamps.
Mounting steps:
- Thoroughly clean the surface
- Acclimatize the magnetic strip
- Remove the protective foil and attach the magnetic strip with a great pressure force (4-5 kg/cm2)
- Cover it with lubricant (if no cover strip is used), push-on the runner block, secure it with strip clamps
The following preparation instructions are to be observed:
Preparing the surface
To guarantee ideal adhesion, any anti-adhesive contamination in the rail slot (e.g. oil, grease, dust, separating agents) must be removed with solvents with residue-free evaporation. Suitable agents are ketones or alcohols. When using solvents, the manufacturer’s instructions are to be observed at all times!
Pressure force:
The rigidity of the adhesion directly depends on the contact developed by the adhesive with the surfaces to be glued. The ideal pressure force is 4 to 5 kg/cm² (use press-on aids if applicable).
Adhesion temperature:
The most favorable adhesion temperature is between +18°C and +30°C. Adhesions in which the surfaces to be glued are colder than +10°C are to be avoided since, in such case, the adhesive becomes too hard and, therefore, a sufficient instant adhesion cannot be achieved. After proper adhesion, the rigidity of the connection is also guaranteed with temperatures in the minus range. According to our experience, the final adhesion force of an adhesion is reached after approx. 72 hours (at +21°C). For adhesion, only the transfer adhesive tape which is included in the scope of delivery and already attached to the magnetic strip is to be used.
Handling
To avoid tensions in the magnetic strip, it must not be stretched, twisted or stored/handled with the magnetized plastic strip directed to the inside. If the magnetic strip is reeled up, inserting a partition layer for avoiding damage is recommended. When being stored in a non-glued condition, the recommended storage temperature is to be complied with to avoid a weakening of the transfer adhesive layer.
Ordering codes
Material numbers
| Size | Description | Part number | Länge | Buy |
| 15 | Set | R168318000 | 17.8 m | |
| 20 | Set | R168388000 | 17.8 m | |
| 25 | Set | R168328000 | 17.8 m | |
| - | Pole search film | R168399000 |
Order key magnetic strip
Downloads
 | IMScompact integrated measuring system for BSHP ball rail system Manual | R320103196_EN | 2019-12-01 | English | PDF | 2.5MB Product Groups: Integrated measuring systems |
| R999001485 Integrated measuring system IMScompact Catalog | R999001485 | 2020-03-01 | English | PDF | 2.9MB Product Groups: Integrated measuring systems Only available as PDF |
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