Product Overview
MONORAIL AMSABS 3B is an integrated absolute position measuring system offered by SCHNEEBERGER, combining high-precision magneto-resistive position sensors with the proven MONORAIL MR four-row roller guideway. This system provides an ideal solution for machine tools and high-end automation applications requiring the highest precision positioning and real-time position feedback.
Absolute Measuring Advantages
Unlike incremental systems, absolute measuring systems provide precise position information immediately upon power-up, without requiring a homing procedure. This significantly reduces machine startup time and ensures immediate resumption of machining operations after power interruption, substantially improving production efficiency.
AMSABS 3B employs the magneto-resistive measuring principle, with the read head directly integrated into the carriage housing for a compact system design. The magnetic scale tape is embedded in the guideway side, fully protected from external environmental influences. The system offers SSI (cycle synchronous serial), Siemens Drive CLiQ®, FANUC and Mitsubishi configurations for easy integration with various control systems.
AMSABS 3B System Features
- Absolute Magneto-resistive Measuring Principle - Precise position known at power-up, no homing required, reduced startup time
- Based on MONORAIL MR Guideway - Four-row roller O-arrangement, providing maximum rigidity and load capacity
- High-precision Position Feedback - Resolution up to 0.1 µm, accuracy class ± 5 µm / 1000 mm
- Integrated Read Head Design - Read head embedded in carriage housing, no increase in system volume
- Protected Magnetic Scale Tape - Scale tape embedded in guideway side, protected from contamination and damage
- Multiple Configuration Options - SSI cycle synchronous serial / hybrid serial + 1 Vpp / Drive CLiQ® / FANUC / Mitsubishi
- Maximum Measuring Length 6000mm - Suitable for long stroke applications
- IP68 Protection Rating - Suitable for harsh industrial environments
System Specifications
| Measuring Principle | Magneto-resistive |
| Measuring Type | Absolute |
| Pole Pitch | 200 µm |
| Resolution | Up to 0.1 µm (depending on interface configuration) |
| Maximum Measuring Length | 6000 mm |
| Accuracy | ± 5 µm / 1000 mm; ± 2 µm / 40 mm |
| Maximum Speed | 3 m/s |
| Output Interface | SSI / Drive CLiQ® / FANUC / Mitsubishi |
| Operating Temperature | 0°C ~ +70°C |
| Protection Rating | IP68 |
| Supply Voltage | DC 5 V ± 10% or 24 V ± 10% |
Guideway Types
AMSABS 3B guideways are based on the MONORAIL MR design, with a built-in magnetic scale tape for absolute position measurement.
| Illustration | Type | Description | Available Sizes | Features |
 | N | Standard | 25, 30, 35, 45, 55, 65 | — |
 | C | Cover strip | 25, 35, 45, 55, 65 | — |
Carriage Types
AMSABS 3B carriages feature built-in read heads and share the same load capacity and mechanical characteristics as MONORAIL MR carriages.
| Illustration | Type | Description | Available Sizes | Mounting | Features |
 | A | Standard | 25-65 | Top | High load and moment, with read head |
 | B | Standard long | 25-65 | Top | Extended design, higher moment, with read head |
 | C | High-flat | 25-65 | Top | Lower height, high load, with read head |
 | D | High-flat long | 25-65 | Top | Extended high-flat type, higher moment, with read head |
 | E | High-flat, side mounting | 25, 35 | Side | Side mounting holes, special installation, with read head |
 | F | Flat | 25-55 | Top | Lowest height design, with read head |
 | G | Flat long | 25-55 | Top | Extended flat design, with read head |
Integrated Read Head Design
AMSABS 3B carriages integrate the read head inside the carriage housing, with the read head output cable routed from the carriage side. The carriage body is identical to MONORAIL MR, with the same load capacity and mechanical characteristics.
Available Sizes
Select a size to view detailed specifications:
AMSABS 3B Size 25
Rail width 23mm, accuracy ± 5 µm / 1000 mm, max measuring length 6000mm.
View Specifications AMSABS 3B Size 30
Rail width 28mm, max single-piece length 6000mm.
View Specifications AMSABS 3B Size 35
Rail width 34mm, accuracy ± 5 µm / 1000 mm, max measuring length 6000mm.
View Specifications AMSABS 3B Size 45
Rail width 45mm, accuracy ± 5 µm / 1000 mm, max measuring length 6000mm.
View Specifications AMSABS 3B Size 55
Rail width 53mm, accuracy ± 5 µm / 1000 mm, max measuring length 6000mm.
View Specifications AMSABS 3B Size 65
Rail width 63mm, accuracy ± 5 µm / 1000 mm, max measuring length 6000mm.
View Specifications Available Accessories
Guideway Accessories
| MRK | Plugs |
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| MAC | Cover strips |
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| EST | Cover strip end pieces |
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| MSC | Cover strip fixing bands |
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| MWC | Cover strip mounting tool |
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Carriage Accessories
| ZRV | Additional wipers |
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| ARM | Metal wipers |
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| FRB | Bellows |
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| ZFR | Bellows connection plates |
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| EFR | Bellows end plates |
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| MRS | Assembly rails |
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Measuring System Accessories
| SABS XB-MH | Read head spare part |
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| 12-pole connection cables |
| 17-pole connection cables |
Lubrication Accessories
| Lubrication fittings M6/M8 |
| Grease nipples |
| Hose connectors |
| Lubrication plates |
View Complete Accessories List →
