Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X80SU
The AirTAC Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X80SU is a genuine single acting, pull (spring extend) aluminum-barrel mini round cylinder with a Ø40mm bore and 80mm stroke, G1/4 air ports and a fixed rubber bumper. Air drives the pull (work) stroke and the spring returns the rod — it rests extended on air loss.
- BoreØ40 mm
- Stroke80 mm
- Port sizeG1/4
- Acting typeSingle acting, pull (spring extend)
- Rod threadM12×1.25
- CushionFixed rubber bumper
About the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X80SU
The AirTAC MTBL40X80SU is a compact single-acting pull-type mini cylinder with a 40mm bore and 80mm stroke. An internal spring extends the rod to a fail-safe extended home position, while air pressure retracts it to perform useful work on the pull stroke. It delivers a usable pull force of 339.1 N at 0.5 MPa and 550.1 N at 0.7 MPa. The U code denotes a flat-end back cover for rigid rear mounting. Equipped with an S code built-in magnet, it supports CMSG reed and DMSG or EMSG solid-state sensor switches for precise end-of-stroke detection.
This model features a riveted rolling-packed aluminum barrel and a 20 µm hard-chrome plated carbon-steel rod. Because it is single-acting, the overall length is A + 2 x stroke, and it uses a fixed rubber bumper rather than an adjustable air cushion. Operating pressure spans 0.2-1.0 MPa, requiring a minimum of 0.2 MPa to overcome the return spring. The G1/4 port and M12x1.25 rod-end thread are standard for this bore size.
Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X80SU Technical Specifications
| Model | Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X80SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 mm |
| Acting type | Single acting, pull (spring extend) |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 100 mm |
Single-acting minimum working pressure is 0.2 MPa (the air must overcome the return spring). Do not apply an external load during the spring return stroke. Thread options: PT / G / NPT.
Usable Pull Force (Ø40mm)
| Pressure | Pull force (net of spring) |
|---|---|
| 0.5 MPa | 339.1 N |
| 0.7 MPa | 550.1 N |
These are the usable single-acting forces after the return spring — lower than a same-bore double-acting MBL. Size with a margin.
Model Code: Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X80SU
| MTBL | Single acting, pull (spring extend) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×80 | Stroke length in mm. |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
| CA / U | Back cover: CA pivot (clevis) or U flat-end. |
Related: MSBL (single-acting push), MBL/MBLC (double acting), MBLD (double rod).
Where the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X80SU Is Used
Injection Mold Ejection
Pulls ejector pins back inside the mold plate during the 80mm stroke, ensuring the spring-extend fail-safe home keeps pins retracted safely when air pressure drops.
Stamping Press Stripper
Draws the stripper plate upward against 339.1 N of force at 0.5 MPa to clear metal sheet, relying on the flat-end U cover for rigid rear chassis mounting.
PCB Conveyor Tensioning
Maintains tension on a transfer belt by pulling an idler pulley, using the built-in magnet to trigger an EMSG electronic sensor for position feedback.
Is the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X80SU the Right Cylinder?
When sizing this 40mm bore cylinder, consider stepping down to the 32mm bore if your application requires less force, as it yields 224.8 N at 0.5 MPa. If you need to step up, note that 40mm is the largest available single-acting bore in this series, delivering 550.1 N at 0.7 MPa. Choose the MTBL over the MSBL push type when a power loss or stopped valve must leave the rod extended in a safe rest state. Remember that the return spring opposes the air stroke, so the usable pull force is lower than a double-acting MBL. Always maintain at least 0.2 MPa working pressure, and apply no external load during the spring extend return stroke. To replace this unit, match the 40mm bore, 80mm stroke, G1/4 port, PT thread, U flat-end back cover, and S magnet option.
Quick checklist
- ✓ Usable pull force at your pressure (min 0.2 MPa)
- ✓ Fail-safe rest position (extended)
- ✓ No external load on the spring return stroke
- ✓ Magnet (S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa (min 0.2 to overcome the spring).
- check Apply no external load on the spring return stroke.
- check Avoid side load on the piston rod.
- check Use the correct mounting accessory (LB / FA / SDB) and back cover (CA / U).
- check Installation by qualified personnel per AirTAC docs.
Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X80SU FAQ
This single-acting pull cylinder generates a usable pull force of 339.1 N at 0.5 MPa and 550.1 N at 0.7 MPa. It requires a minimum operating pressure of 0.2 MPa to overcome the internal return spring, with an overall operating range of 0.2-1.0 MPa.
Air retracts the rod for the work stroke, but on air loss, the internal spring pushes the rod out to a fail-safe extended home position. The S code includes a built-in magnet for position detection, compatible with AirTAC CMSG reed switches and DMSG or EMSG electronic sensors.
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