Rodless belt actuator
Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) actuator
Belt-driven rodless actuator in six sizes for long, fast strokes, offered unguided (U), with self-cleaning solid bearings for dusty sites (S), or on profiled rail for heavy loads (P).
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Pricing and availability
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Need Tolomatic parts, a replacement or a suitable alternative? Send us a part number, or tell us what the machine needs to do. Our UK engineers will come back with the right product, pricing, lead time and delivery, whether that is the original part, a checked alternative or a complete axis.
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Spec builder
Configure Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P)
Select every part you need and answer the questions an applications engineer would ask. Our engineers use your specification to come back with the right products, pricing and lead times. You see your summary before we ask for any details.
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- 1Products
- 2Performance
- 3Environment
- 4Volumes
- 5Your spec
What are you specifying?
Select everything you need. A motor, drive and gearbox can be specified together as one axis.
Key specifications
| Ingress protection | not stated (IP67 applies to QD switches only) |
|---|---|
| Temperature | -12–54 °C |
| Force (max) | 1,859 N |
| Stroke (max) | 10,516 mm |
| Linear speed (max) | 5,080 mm/s |
| Screw lead | 60.1, 80, 100, 120, 140, 170 (travel per rev) |
| Screw type | belt |
| Repeatability | 0.051 mm |
| Duty | not stated |
| Sizes | 16, 25, 32, 40, 50, 63 |
| Max load | 11,490 |
| Variants | MXB-U 5,080 mm/s, MXB-S 2,540 mm/s, MXB-P 3,810 mm/s |
Series ranges as published; individual models vary. The full datasheet, drawings and CAD models are available on request.
Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) replacement and alternative options
Use these supply-network options as a starting point for an engineering check. We can also help source the original Tolomatic part. Published series figures do not establish an exact-model or drop-in replacement: confirm ratings, fit, interfaces and approvals for your application.
Compact captive-style hybrid linear stepper with high straightness and rigidity, used in biomedical, lab and cosmetology devices.
| Published maximum | MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) | Kaptive Linear Stepper Actuator |
|---|---|---|
| Force | 1,859 N | 2,400 N meets or exceeds |
| Stroke | 10,516 mm | — |
| Speed | 5,080 mm/s | — |
Hybrid stepper whose lead screw passes through the motor, giving long travel limited only by screw length; needs external anti-rotation.
| Published maximum | MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) | Non-captive Linear Stepper Actuator |
|---|---|---|
| Force | 1,859 N | 2,400 N meets or exceeds |
| Stroke | 10,516 mm | — |
| Speed | 5,080 mm/s | — |
Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) model codes
Published model codes in the MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) range, with key figures from the manufacturer's data. Search this page for your part number, or send it to us for availability, pricing and lead time.
| Model code | Max thrust (N) | Max stroke (mm) | Max speed (mm/s) | Description | Pricing / replacement |
|---|---|---|---|---|---|
| MXB16U | 169 | 5080 | 5080 | MXB-U unguided | Quote or replacement for MXB16U → |
| MXB25U | 672 | 10516 | 5080 | MXB-U unguided | Quote or replacement for MXB25U → |
| MXB32U | 930 | 10490 | 5080 | MXB-U unguided | Quote or replacement for MXB32U → |
| MXB40U | 1112 | 10465 | 5080 | MXB-U unguided | Quote or replacement for MXB40U → |
| MXB50U | 1446 | 10414 | 5080 | MXB-U unguided | Quote or replacement for MXB50U → |
| MXB63U | 1859 | 5512 | 5080 | MXB-U unguided | Quote or replacement for MXB63U → |
Options
- direct or 3:1 reduction drive (2:1 on size 16)
- dual stub shaft
- auxiliary carrier (S, P)
- floating mount (S)
- mirrored carrier (P)
- tube clamps, mounting plates, head cover
- 12 switch options
- Your Motor Here
Typical applications
What a rodless belt actuator is
A rodless belt actuator moves a carriage along an aluminium profile using a toothed belt driven by a pulley at one end. The load mounts on the carriage, which runs on internal bearings or profile rails, so the unit carries and guides the load. Because the belt does not whip like a long screw, stroke can be long, typically several metres, and speeds are high. Belt drives are less stiff than screws, so they suit fast transfer more than high-force pushing.
When engineers choose a rodless belt actuator
Choose a belt actuator for long strokes, high speed and lighter thrust loads, such as transfer axes, gantries and pick-and-place over distance. The trade-offs are stiffness, thrust and accuracy: belt stretch reduces stiffness and repeatability compared with screw drives, and vertical axes need a brake and careful sizing. For high thrust or tight positioning at short stroke, a screw rodless actuator is usually a better fit.
How to specify the Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P)
Send these with your enquiry and an engineer can confirm the right MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) variant:
- Payload mass and moment loads (kg, Nm)
- Stroke (mm or m)
- Speed and acceleration (m/s, m/s²)
- Positioning repeatability (mm)
- Thrust force needed (N)
- Orientation and any vertical axis requirements
- Motor mounting, gearbox and environment
Common mistakes to avoid
- Forgetting belt tension and stretch when tight repeatability is needed
- Using a belt actuator for pressing or high thrust tasks
- Ignoring reflected inertia and gearbox ratio on high-acceleration axes
- Mounting the profile unsupported over long spans
Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P): frequently asked questions
Can you help replace Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) 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 supply-network options where appropriate. We confirm compatibility and any changes needed before recommending a replacement.
What is the Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P)?
Belt-driven rodless actuator in six sizes for long, fast strokes, offered unguided (U), with self-cleaning solid bearings for dusty sites (S), or on profiled rail for heavy loads (P). Published series figures include temperature -12 °C, temperature 54 °C, force 1,859 N, stroke 10,516 mm. It is available through our supply network, and our engineers can confirm the right variant for your application.
What model codes are in the Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) range?
The MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) range includes MXB16U, MXB25U, MXB32U, MXB40U, MXB50U, MXB63U. The table on this page lists each published model code with its key figures. Send us the code you use, or the one you need to replace, and our engineers will confirm availability, lead time or the closest equivalent.
Who makes the Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P)?
The Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) is made by Tolomatic (Tolomatic Inc.) available through our supply network. Send us your requirement for pricing, lead time, datasheets and CAD.
What is the temperature of the Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P)?
The published series minimum temperature is -12 °C. Individual models and sizes in the MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) range vary, so check the exact variant against your duty cycle, mounting and environment, or ask our engineers to confirm the right size for you.
Is there an alternative to the Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P)?
We can assess suitable replacement options. On published figures, DINGS' Kaptive Linear Stepper Actuator and DINGS' Non-captive Linear Stepper Actuator are options to assess from our supply network. An engineer confirms the fit against your application before recommending anything.
How long can a belt-driven linear actuator be?
Belt actuators commonly reach several metres of stroke from one profile, and longer strokes are possible with joined profiles. The limits are profile stiffness, belt stretch, support spacing and the moment loads on the carriage. Long axes need regular supports along their length to avoid sag.
How accurate is a belt-driven actuator?
Repeatability on belt actuators is typically in the region of a tenth of a millimetre, depending on belt type, tension and load, which is coarser than screw drives. Accuracy is affected by belt stretch and pulley tolerances. For better accuracy, add linear encoder feedback or choose a screw drive.
Further reading: Rodless belt vs screw actuators · How to size a linear actuator · Linear actuators
Often compared with
Engineers specifying this series often compare it with:
Other rodless belt actuator series
Engineer support
Need Tolomatic MXB Belt-Drive Rodless (MXB-U / MXB-S / MXB-P) or a complete system around it?
Tell us the part or application, quantity and timing. Our UK engineers will come back with the right product, pricing, lead time and delivery.
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- Like-for-like and better-fit alternatives
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Prefer to configure it? Use the spec builder.
How it works
From enquiry to delivery
Send a part number or describe the application. Our engineers take it from there: the right product, a clear quotation, and delivery and support arranged.
- 01Tell us what you needSend a part number, or configure the application, quantities and timing.
- 02An engineer reviews itWe check the specification and find the original part, a checked equivalent or a complete axis.
- 03Receive your quotationProducts, pricing, lead time and compatibility notes in one reply.
- 04Order and deliveryWhen you are happy, the order is placed and delivery and after-sales support are arranged.