Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X30SCA
The AirTAC Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X30SCA is a genuine single acting, pull (spring extend) aluminum-barrel mini round cylinder with a Ø40mm bore and 30mm 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
- Stroke30 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 MTBL40X30SCA
The AirTAC MTBL40X30SCA is a compact single-acting pull-type mini cylinder with a 40mm bore and 30mm stroke. Air retracts the M12x1.25 threaded rod while an internal spring extends it, yielding a usable pull force of 339.1 N at 0.5 MPa and 550.1 N at 0.7 MPa. The CA pivot back cover swings on a pin to absorb arcing loads, and the built-in magnet enables position detection.
It operates at 50-800 mm/s within a 0.2-1.0 MPa range, needing at least 0.2 MPa to overcome the return spring. The riveted rolling-packed aluminum barrel and 20 µm hard-chrome carbon-steel rod provide durability in tight spaces. Overall length equals A plus twice the stroke, and end-of-travel deceleration relies on a fixed rubber bumper rather than an adjustable air cushion.
Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X30SCA Technical Specifications
| Model | Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X30SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 MTBL40X30SCA
| MTBL | Single acting, pull (spring extend) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×30 | 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 MTBL40X30SCA Is Used
Pneumatic Gripper Linkage
Draws a mechanical gripper closed on stamped sheet metal brackets, using the 339.1 N pull force to seat parts while the CA pivot absorbs jaw misalignment.
Package Flap Sealer
Tensions a sealing arm on a carton erector; the spring-extend fail-safe opens the jaw on air loss to prevent jamming downstream.
Textile Tensioning Arm
Pulls a fabric guide roller into its working position, where the CMSG reed switch confirms retraction before the cutting knife cycles.
Is the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X30SCA the Right Cylinder?
Stepping down, the 32mm bore neighbor provides 224.8 N at 0.5 MPa, offering a lighter footprint if your pulling load permits. Stepping up is unavailable as 40mm is the largest single-acting pull bore in this series. Choose this MTBL over a single-acting MSBL when a fail-safe extended home is required upon air loss, or a double-acting MBL when you only need to power one direction. The 0.2 MPa minimum is mandatory to retract the rod, and you must apply no extra external load during the spring-extend return stroke. To replace this SKU exactly, match the 40mm bore, 30mm stroke, G1/4 port, PT thread, CA pivot back cover, and the -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 MTBL40X30SCA FAQ
The usable pull force is 339.1 N at 0.5 MPa and 550.1 N 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.
Air retracts the rod for the working stroke, and the internal spring extends it to a fail-safe extended home upon air loss. The -S magnet allows CMSG reed or DMSG/EMSG electronic switches to detect rod position, while the fixed rubber bumper absorbs end-stroke impact.
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