AMSABS 4B Absolute Measuring System
Absolute Measuring System with 4-row Ball Design
Product Overview
AMSABS 4B is SCHNEEBERGER's precision linear guideway series with integrated absolute position measuring system, based on the proven MONORAIL BM 4-row ball guideway. It combines a compact housing design with high-precision magnetoresistive measuring technology. This system provides the perfect combination of high-speed motion and precision position feedback for automation engineering, material handling, and machine tool applications.
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, greatly improving production efficiency.
AMSABS 4B uses magnetoresistive measuring principle with the read head directly integrated into the carriage housing, achieving a compact system design. The system offers up to 6 digital interface options, including SSI, BiSS-C, FANUC, Mitsubishi, and Siemens Drive CliQ, allowing easy integration with various mainstream control systems. All sizes use the same replaceable read head specifications, simplifying spare parts management.
AMSABS 4B System Features
- Based on MONORAIL BM Guideway - 4-row ball design, low friction, high-speed motion up to 5 m/s
- Absolute Magnetoresistive Measuring - Instant position knowledge on power-up, no homing required, reduced startup time
- High-Precision Position Feedback - Resolution up to 0.244 µm, accuracy ± 3 µm to ± 5 µm
- Integrated Read Head Design - Read head embedded in carriage housing, no increase in system volume
- Multiple Interface Options - SSI, BiSS-C, FANUC, Mitsubishi, Siemens Drive CliQ
- Universal Read Head Design - Same read head for all sizes, simplified spare parts management
- Maximum Measuring Length 6000mm - Suitable for long-stroke, high-speed applications
- IP67/IP68 Protection Rating - Suitable for demanding industrial environments
Measuring System Specifications
| Parameter | Specification |
|---|---|
| Measuring Principle | Magnetoresistive Absolute Encoding |
| Measuring Length | Max. 6000 mm |
| Accuracy | ± 3 µm to ± 5 µm (depending on size) |
| Resolution | 0.244 µm (SSI interface) |
| Digital Interface | SSI / BiSS-C / Drive CliQ |
| Analog Interface | 1 Vpp SinCos (with SSI) |
| Protection Rating | IP67 / IP68 |
| Operating Temperature | 0°C to +60°C |
Rail Types
AMSABS 4B rails are based on MONORAIL BM design with built-in magnetic scale tape for absolute position measurement.
| Type | Description | Available Sizes | Features |
|---|---|---|---|
| N | Standard | 15, 20, 25, 30, 35, 45 | — |
| ND | Through-Hardened Standard | 15, 20, 25, 30, 35, 45 | — |
| C | Cover Strip Type | 15, 20, 25, 30, 35, 45 | — |
| CD | Through-Hardened Cover Strip | 15, 20, 25, 30, 35, 45 | — |
ND/CD Type Description
Rails with "D" suffix are through-hardened versions with fully quenched raceways, suitable for high-load or impact environments.
Accuracy Grades
G1 - High Precision G2 - Precision G3 - Standard
Straightness
Standard (Contact us for special requirements)
Reference Edge
Standard Double-Sided Abutment
Surface Treatment
Standard (No Coating) HART - Corrosion-Resistant Coating
Carriage Types
AMSABS 4B carriages have built-in read heads and share the same load capacity and mechanical characteristics as MONORAIL BM carriages.
| Type | Description | Available Sizes | Mounting | Features |
|---|---|---|---|---|
| A | Standard | 15-45 | Top | High load and moment, with read head |
| B | Standard Long | 15-45 | Top | Extended design, higher moment, with read head |
| C | Narrow | 15-45 | Top | Narrow design, space-saving, with read head |
| D | Narrow Long | 15-45 | Top | Extended narrow, higher moment, with read head |
| E | Medium, Side Mounting | 25-35 | Side | Side mounting holes, special installation, with read head |
| F | Mini | 15-45 | Top | Most compact design, with read head |
| G | Mini Long | 15-45 | Top | Extended mini design, with read head |
Integrated Read Head Design
AMSABS 4B carriages integrate the read head within the carriage housing, with the read head output cable routed from the carriage side. The carriage body is identical to MONORAIL BM with the same load capacity and mechanical characteristics. Available carriage types vary by size; please refer to individual size specification pages.
Accuracy Grades
G1 - High Precision G2 - Precision G3 - Standard
Preload Classes
V1 - Light Preload V2 - Medium Preload V3 - High Preload
Reference Edge
R1 - Bottom Abutment R2 - Top Abutment
Lubrication Port
S10 - Front S20 - Rear S30 - Side
Factory Lubrication
LV - Pre-Lubricated LF - Food-Grade Grease LO - Oil Lubricated LD - Dry
Read Head Interface
TS1 - SSI TS2 - SSI + SinCos TSS - Siemens Drive CliQ TF1 - FANUC TM1 - Mitsubishi TB1 - BiSS-C
Cable Length
K03 - 3m K05 - 5m K10 - 10m K15 - 15m K20 - 20m
Size Series
Size 15
Rail width 15mm
Max. measuring length 1500mm
Size 20
Rail width 20mm
Max. measuring length 3000mm
Size 25
Rail width 23mm
Max. measuring length 6000mm
Size 30
Rail width 28mm
Max. measuring length 6000mm
Size 35
Rail width 34mm
Max. measuring length 6000mm
Size 45
Rail width 45mm
Max. measuring length 6000mm
Size Specification Comparison
| Specification | Size 15 | Size 20 | Size 25 | Size 30 | Size 35 | Size 45 |
|---|---|---|---|---|---|---|
| Rail Width B1 (mm) | 15 | 20 | 23 | 28 | 34 | 45 |
| Rail Height J1 (mm) | 15.7 | 19 | 22.7 | 26 | 29.5 | 37 |
| Max. Measuring Length (mm) | 1500 | 3000 | 6000 | 6000 | 6000 | 6000 |
| Mounting Hole Pitch L4 (mm) | 60 | 60 | 60 | 80 | 80 | 105 |
| Measuring Accuracy (µm) | ± 5 | ± 5 | ± 5 | ± 5 | ± 5 | ± 5 |
| C₀ Static Load (N) * | 19,600 | 31,400 | 46,100 | 63,700 | 84,400 | 134,800 |
| C₁₀₀ Dynamic Load (N) * | 9,000 | 14,400 | 21,100 | 29,200 | 38,700 | 61,900 |
* Based on A/C/E/F type carriages
Available Accessories
Rail Accessories
Plugs (BRK) Cover Strip (BAC) Cover Strip End Cap (EST) Cover Strip Retaining Clip (BSC) Cover Strip Installation Tool (BWC)
Carriage Accessories
Additional Scraper (ZBV) Metal Scraper (ABM) Bellows (FBB) Bellows Adapter Plate (ZFB) Bellows End Plate (EFB) Assembly Rail (MRS)
Measuring System Accessories
Read Head Spare (SABS XB-MH) 17-Pin Connection Cable Extension Cable
Lubrication Accessories
Lubrication Fitting M6/M8 Grease Nipple Hose Connector Lubrication Plate