Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X40SCA
The AirTAC Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X40SCA is a genuine single acting, pull (spring extend) aluminum-barrel mini round cylinder with a Ø40mm bore and 40mm 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
- Stroke40 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 MTBL40X40SCA
The AirTAC MTBL40X40SCA is a 40 mm bore, single-acting pull-type mini cylinder where air retracts the rod and an internal spring extends it. It develops 339.1 N of usable pull force at 0.5 MPa, making this 40 mm stroke well suited for drawing mechanisms closed under significant tension. The fail-safe home position is fully extended, meaning the rod pushes out upon air loss or valve closure.
This SKU features a built-in magnet (-S) for CMSG, DMSG, or EMSG sensor tracking, and a CA pivot back cover that swings on a pin to absorb arcing loads. It uses a G1/4 port, a 16 mm hard-chrome carbon-steel rod, and a fixed rubber bumper instead of an adjustable air cushion. The riveted rolling-packed aluminum barrel keeps the unit compact while extending overall length to A + 2 x stroke.
Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X40SCA Technical Specifications
| Model | Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X40SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MTBL40X40SCA
| MTBL | Single acting, pull (spring extend) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×40 | 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 MTBL40X40SCA Is Used
Press Die Extraction
Pulls stamped sheet metal parts out of a press die using 339.1 N at 0.5 MPa, releasing the part safely when air is cut and the rod spring-extends.
Packaging Lid Puller
Draws carton flaps closed on a packaging line; the CA pivot absorbs arcing misalignment while the fail-safe extended home keeps the line clear.
Gate Valve Tensioning
Tensions a diverter gate in a bulk material hopper, using the 40 mm stroke to pull the gate shut against product flow.
Is the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X40SCA the Right Cylinder?
Step down to the 32 mm bore if your pulling load is lighter, which yields 224.8 N at 0.5 MPa, or step up to this 40 mm bore for 339.1 N at 0.5 MPa and 550.1 N at 0.7 MPa. Choose this MTBL pull-type over the MSBL push-type if your mechanism requires a fail-safe extended rest state rather than a retracted one. Unlike a double-acting MBL, usable force is net of the return spring, requiring a minimum 0.2 MPa operating pressure to overcome it. Apply no external load during the spring-extend return stroke. For replacements, match the 40 mm bore, 40 mm stroke, G1/4 port, PT thread, CA pivot cover, and -S 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 MTBL40X40SCA FAQ
The usable pull force is 339.1 N at 0.5 MPa and 550.1 N at 0.7 MPa. Because it is single-acting, it requires a minimum operating pressure of 0.2 MPa to overcome the internal return spring.
The CA back cover is a pivot clevis that swings on a pin to accommodate arcing angular loads. The -S denotes a built-in magnet for position detection using AirTAC CMSG reed switches or DMSG and EMSG electronic sensors.
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