Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50CA
The AirTAC Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50CA 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 MTBL40X50CA
The AirTAC MTBL40X50CA is a 40 mm bore, single-acting pull-type mini cylinder that generates 339.1 N of usable pulling force at 0.5 MPa. Compressed air retracts the rod for the 50 mm work stroke, while an internal spring extends it back out. This fail-safe extended home is optimal for mechanisms that must rest open, drawing closed only when pressurized via a 3/2 valve.
This SKU features a CA pivot clevis back cover designed to articulate around a pin, absorbing arcing loads better than a rigid flat mount. It uses a G1/4 port and a 16 mm hard-chrome carbon-steel rod. Note that this specific configuration lacks a built-in magnet, meaning it cannot support CMSG or DMSG position sensors. The riveted aluminum barrel keeps weight low, while the fixed rubber bumper absorbs end-of-stroke impact.
Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50CA Technical Specifications
| Model | Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50CA |
|---|---|
| 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 MTBL40X50CA
| 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 MTBL40X50CA Is Used
Packaging Lid Lifting
Pulls a hinged packaging lid closed with 339.1 N at 0.5 MPa to seal cartons, relying on the fail-safe extended spring to keep the lid open during product loading.
Brake Cable Tensioning
Draws a tensioned brake cable on an automated conveyor, using the 50 mm stroke to seat the mechanism while the CA clevis accommodates the cable's angular sweep.
Chip Bin Discharge
Pulls a discharge gate open against gravity in a CNC chip bin, ensuring the spring pushes the gate firmly shut to prevent coolant leaks when air pressure drops.
Is the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X50CA the Right Cylinder?
For applications needing less pull force, stepping down to the 32 mm bore yields 224.8 N at 0.5 MPa. If higher force is required, note that 40 mm is the largest available MTBL bore, so exceeding 550.1 N at 0.7 MPa requires switching to a double-acting MBL. Unlike the MSBL push type that fails safe retracted, this MTBL spring-extend variant ensures the rod stays out during air loss. Maintain at least 0.2 MPa operating pressure to overcome the spring, and never apply external loads during the extend return stroke. To replace, match the 40 mm bore, 50 mm stroke, PT thread, CA pivot cover, and no-magnet configuration.
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 MTBL40X50CA FAQ
The usable pull force is 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 a maximum operating pressure of 1.0 MPa.
No. Because this SKU lacks the -S code for a built-in magnet, it cannot support AirTAC CMSG (reed) or DMSG/EMSG (electronic) position switches. You would need an MTBL40X50S variant or equivalent to use sensors.
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