





MXB-U Actuators
The MXB-U has an unguided carrier design for versatility in applications that already have guides built in.
The MXB is Tolomatic’s most advanced belt driven linear actuator series, with 3 different carrier guide options: Unguided (U), Solid Bearing (S), and Profiled Rail (P). The Unguided carrier style allows for movement in system that already have guide bearings designed in, and need to avoid binding from misalignment with the drive mechanism.
- 6 Body Sizes
- Universal mounting plate for easy load connections
- Stroke lengths up to 414 in (10.5m)
- Travel speeds up to 200 in/s (5 m/s)
- Acceleration capabilities up to 1200 in/sec^2 (30.5 mm/sec^2)
- Steel chorded polyurethane drive belt
Features & Ordering
Download the MXB-U Brochure for full details on features
MXB-U Features
MXB-U Ordering
Specifications
| Specifications | Units | MXB16U | MXB25U | MXB32U | MXB40U | MXB50U | MXB63U |
|---|---|---|---|---|---|---|---|
| Maximum Stroke | in (mm) | 200 (5,080) | 414 (10,516) | 413 (10,490) | 412 (10,465) | 410 (10,414) | 217 (5,512) |
| Maximum Force | lbf (N) | 38 (169) | 151 (672) | 209 (930) | 250 (1,112) | 325 (1,446) | 418 (1,859) |
| Maximum Speed | in/sec (mm/sec) | 200 (5,080) | |||||
IMAGE-MXB-U Specifications and Breakaway Torque
MXB-U Detailed Specifications and Breakaway Torque - US Measurements
| MXB-U, MXB-S, and MXB-P | BREAKAWAY TORQUE | ||||||
|---|---|---|---|---|---|---|---|
| MXB SIZE | Belt Width | Belt Dead Length | Pulley Pitch Dia. | Stroke per Rev. | Max. Stroke | Single Carrier | Aux. Carrier Opt. (MXB-P) |
| in | in | in | in | in | lb-in | lb-in | |
| 16 | 0.39 | 14.29 | 0.753 | 2.366 | 230 | 4.0 | 6.0 |
| 25 | 0.71 | 18.72 | 1.003 | 3.151 | 414 | 5.0 | 7.0 |
| 32 | 0.98 | 21.89 | 1.253 | 3.936 | 413 | 8.0 | 10.0 |
| 40 | 1.18 | 24.95 | 1.504 | 4.725 | 412 | 10.0 | 12.0 |
| 50 | 1.57 | 27.25 | 1.754 | 5.510 | 410 | 15.0 | 18.0 |
| 63 | 1.97 | 36.11 | 2.130 | 6.692 | 217 | 20.0 | 25.0 |
MXB-U Detailed Specifications and Breakaway Torque - Metric Measurements
| MXB-U, MXB-S, and MXB-P | BREAKAWAY TORQUE | ||||||
|---|---|---|---|---|---|---|---|
| MXB Size | Belt Width | Belt Dead Length | Pulley Pitch Dia. | Stroke per Rev. | Max. Stroke | Single Carrier | Aux. Carrier Opt. (MXB-P) |
| mm | mm | mm | mm | m | N-m | N-m | |
| 16 | 10 | 363.0 | 19.1 | 60.1 | 5.84 | 0.452 | 0.678 |
| 25 | 18 | 475.5 | 25.5 | 80.0 | 10.5 | 0.565 | 0.791 |
| 32 | 25 | 556.0 | 31.8 | 100.0 | 10.5 | 0.904 | 1.130 |
| 40 | 30 | 633.7 | 38.2 | 120.0 | 10.5 | 1.130 | 1.356 |
| 50 | 40 | 692.2 | 44.6 | 140.0 | 10.4 | 1.695 | 2.034 |
| 63 | 50 | 917.2 | 54.1 | 170.0 | 5.51 | 2.260 | 2.825 |
MXB-U Weight, Inertia - US Measurements
| MXB-U Size |
WEIGHT | INERTIA | |||||
|---|---|---|---|---|---|---|---|
| Plate Assembly | Belt Tensioning Assembly | Base Actuator | Per in of Stroke | Drive/Idle Pulley Assemblies | Plate Assembly (Including Belt Tensioner Assembly) | Per in of Stroke | |
| lb | lb | lb | lb/in | lb-in2 | lb-in2 | lb-in2 | |
| 16 | 0.11 | 0.10 | 1.59 | 0.084 | 0.0085 | 0.0297 | 0.0005 |
| 25 | 0.27 | 0.15 | 2.59 | 0.138 | 0.0259 | 0.1050 | 0.0017 |
| 32 | 0.48 | 0.30 | 4.17 | 0.237 | 0.1416 | 0.3043 | 0.0037 |
| 40 | 0.90 | 0.46 | 7.83 | 0.352 | 0.3719 | 0.7665 | 0.0065 |
| 50 | 1.03 | 0.72 | 9.93 | 0.472 | 0.7243 | 1.3480 | 0.0117 |
| 63 | 2.54 | 0.83 | 16.44 | 0.833 | 1.9512 | 3.8249 | 0.0216 |
MXB-U Weight, Inertia - Metric Measurements
| MXB-U Size |
WEIGHT | INERTIA | |||||
|---|---|---|---|---|---|---|---|
| Plate Assembly | Belt Tensioning Assembly | Base Actuator | Per cm of Stroke | Drive/Idle Pulley Assemblies | Plate Assembly (Including Belt Tensioner Assembly) | Per cm of Stroke | |
| kg | kg | kg | kg/cm | kg-cm2 | kg-cm2 | kg-cm2 | |
| 16 | 0.05 | 0.05 | 0.72 | 0.0150 | 0.0250 | 0.0870 | 0.0006 |
| 25 | 0.12 | 0.07 | 1.17 | 0.0246 | 0.0759 | 0.3073 | 0.0020 |
| 32 | 0.22 | 0.13 | 1.89 | 0.0423 | 0.4143 | 0.8906 | 0.0043 |
| 40 | 0.41 | 0.21 | 3.55 | 0.0629 | 1.0884 | 2.2430 | 0.0075 |
| 50 | 0.47 | 0.33 | 4.50 | 0.0843 | 2.1196 | 3.9449 | 0.0135 |
| 63 | 1.15 | 0.38 | 7.46 | 0.1488 | 5.7101 | 11.1931 | 0.0249 |
MXB Additional Detailed Specifications
| MAXIMUM VELOCITY MXB-U | 5080 mm/sec | 200 in/sec |
|---|---|---|
| MAXIMUM VELOCITY MXB-S | 2,540 mm/sec | 100 in/sec |
| MAXIMUM VELOCITY MXB-P | 3,810 mm/sec | 150 in/sec |
| MAXIMUM ACCELERATION | 30.48 m/sec 2 | 1,200 in/sec 2 |
| REPEATABILITY | ± 0.051 mm | ± 0.002 in |
| TEMPERATURE RANGE | -12 to 54 °C | 10 to 130 °F |
| Heat generated by the motor and drive should be taken into consideration as well as linear velocity and work cycle time. For applications that require operation outside of the recommended temperature range, contact Tolomatic. | ||
STRAIGHTNESS, FLATNESS 0.01702 L mm 0.00067 L in
Actuator mounted on a flat surface and fully restrained (see Mounting Plate Requirements, MXB catalog 8500-4000 page mxb_11)
L = Maximum distance between supports
The listed values relating to straightness/flatness are intended for reference purposes only, and not as an engineering standard of absolute tolerance for a given actuator. Appropriate installation is the single most important factor in reducing variation, so good engineering practices such as measurement, mapping, etc. must be employed in applications with stringent straightness/flatness requirements.
Dimensions
MXB-U Rodless Belt Drive Actuator & Option Dimensions
Get CAD
Manuals & Part Sheets
Additional Resources
Information Center:
Catalogs & Brochures
- Corporate Overview-Linear Motion Solutions Brochure (English)
- SOLUCIONES DE CONTROL DE MOVIMIENTO (Spanish, Corporate Overview-Motion Control Solutions Brochure)
- Unternehmensübersicht (German, Corporate Overview brochure)
- Brochure sur l'entreprise Tolomatic (French, Corporate Overview-Linear Motion Solutions Brochure)
- MXB Belt-Driven Linear Actuator Product Catalog
- Gantry & Multi-Axis Solutions Brochure
- Soluciones Gantry y Multieje (^ES Gantry brochure)
- OEM Actuator Solutions Brochure
Certifications
E-Books
Guides
Tech Bulletins
Terms & Conditions
White Papers
- Electric actuators vs. pneumatic cylinders: A comparison based on total cost of ownership
- Select the right linear actuator: Making sense of manufacturer specifications
- Specifying electric rodless actuators: Ten tips for maximizing actuator life and system performance
- Rules of actuator and guide alignment in linear motion systems
- IP ratings and the manufacturing environment: How to apply linear actuators for quality, safety and long service life.
- Minimizing electrical noise in actuator drive systems for maximum reliability and performance
- Screw-driven vs. belt-driven rodless actuators: How to select drive trains for reliability, efficiency and long service life
- Introduction to accuracy and repeatability in linear motion systems
- Elektrische Stangenantriebe vs. Hydraulikzylinder: Ein Vergleich der Vor- und Nachteile beider Technologien weißes Papier (Electric vs Hydraulic WP, German)
- Elektrische Antriebe und Pneumatikzylinder: Ein Vergleich basierend auf den Gesamtbetriebskosten weißes Papier (GERMAN, TCO WhitePaper)
- Designing Gantry and Multi-Axis Automation Systems

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