Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50U
The AirTAC Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50U is a genuine single acting, pull (spring extend) aluminum-barrel mini round cylinder with a Ø40mm bore and 50mm 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
- Stroke50 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 MTBL40X50U
The AirTAC MTBL40X50U is a compact single-acting pull-type mini cylinder featuring a 40mm bore and 50mm stroke. Air retracts the Ø16mm rod to perform useful work, while an internal spring extends it to a fail-safe home when pressure drops. It delivers 339.1N of usable pull force at 0.5 MPa (peaking at 550.1N at 0.7 MPa), making it the highest-force option in the MTBL family.
This U variant uses a flat-end back cover for rigid rear mounting, and its riveted rolling-packed aluminum barrel keeps weight down in tight spaces. Because this SKU lacks the -S magnet code, it cannot accept a CMSG, DMSG, or EMSG position sensor. The fixed rubber bumper absorbs end-of-stroke impact, and the 20µm hard-chrome plating on the carbon-steel rod resists wear.
Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50U Technical Specifications
| Model | Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50U |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MTBL40X50U
| MTBL | Single acting, pull (spring extend) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×50 | 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 MTBL40X50U Is Used
Injection Mold Ejection
Pulls ejector pins back inside the mold base after part release, relying on 339.1N at 0.5 MPa to overcome stripper friction before the spring extends to a safe rest.
Packaging Flap Folding
Draws cardboard flaps closed during case erecting, using the 50mm stroke to tension the mechanism shut before the spring drives the flap open on air loss.
Stamping Press Unloading
Retracts a mechanical hook to pull finished metal stampings out of a die, benefiting from the rigid U back cover to handle the 550.1N peak pull force at 0.7 MPa.
Is the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50U the Right Cylinder?
As the largest available MTBL bore, this 40mm cylinder provides maximum pulling force. If your application requires less tension, step down to the 32mm bore, which yields 224.8N of pull force at 0.5 MPa. If 40mm is insufficient, you must move to a double-acting MBL cylinder, as no larger single-acting pull bore exists in this series. The 0.2 MPa minimum operating pressure is required to overcome the return spring. Never apply external load during the spring-extend return stroke. To replace this unit, match the 40mm bore, 50mm stroke, G1/4 port, PT thread, U flat-end cover, and no magnet.
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 MTBL40X50U FAQ
This 40mm bore cylinder generates 339.1N of usable pull force at 0.5 MPa and 550.1N at 0.7 MPa. It requires an operating pressure of 0.2-1.0 MPa, with a 0.2 MPa minimum needed to overcome the internal return spring and retract the rod.
No. This specific SKU lacks the -S code, meaning it has no built-in magnet and cannot accept AirTAC CMSG, DMSG, or EMSG sensor switches. You would need the MTBL40X50S variant for solid-state or reed switch position detection.
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