Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X75SCA
The AirTAC Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X75SCA is a genuine single acting, pull (spring extend) aluminum-barrel mini round cylinder with a Ø40mm bore and 75mm 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
- Stroke75 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 MTBL40X75SCA
The AirTAC MTBL40X75SCA is a 40 mm bore, 75 mm stroke single-acting pull cylinder with a spring-extend mechanism. Air retracts the rod to perform work, while an internal spring drives it back out to a fail-safe extended home. Delivering a usable pull force of 339.1 N at 0.5 MPa (550.1 N at 0.7 MPa), this unit suits heavy tensioning and drawing closed tasks. The 75 mm stroke provides ample travel for seating large components.
This SKU features a CA pivot/clevis back cover, allowing the cylinder to swing on a pin to absorb arcing angular loads. The built-in magnet (-S) enables position detection with CMSG reed or DMSG/EMSG electronic switches. A G1/4 port feeds the chamber, and the 16 mm hard-chrome carbon-steel rod operates at 50-800 mm/s. It uses a fixed rubber bumper for end-of-stroke damping, and the riveted aluminum barrel extends to A + 2 x stroke to house the return spring.
Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X75SCA Technical Specifications
| Model | Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X75SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 MTBL40X75SCA
| MTBL | Single acting, pull (spring extend) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×75 | 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 MTBL40X75SCA Is Used
Injection Mold Ejection
Pulls a heavy mold core back 75 mm during the machine cycle, utilizing the 339.1 N pull force at 0.5 MPa to overcome draft friction before the spring extends it clear.
Heavy Guard Door Latching
Draws an industrial safety guard closed and holds it under tension; the CA pivot absorbs misalignment, and the spring ensures the door fails open if air pressure drops.
Cable Tensioning Systems
Maintains consistent drawbar pull on wire feeds, using the 550.1 N force at 0.7 MPa to seat cables firmly while the pivot clevis accommodates line angle changes.
Is the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X75SCA the Right Cylinder?
For applications needing less force, the 32 mm bore neighbor provides 224.8 N of pull at 0.5 MPa; if 339.1 N is insufficient, stepping up is impossible within the single-acting range as 40 mm is the largest available. Choose this MTBL pull-type over an MSBL push-type when your mechanism requires a fail-safe EXTENDED position upon air loss. It requires a 3/2 valve and a minimum of 0.2 MPa to overcome the spring. Never apply external loads during the unpowered extend return stroke. To replace this unit, match the 40 mm bore, 75 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 MTBL40X75SCA 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 required to overcome the internal return spring.
The CA back cover is a pivot/clevis that swings on a pin to handle arcing loads. The built-in magnet (-S) works with AirTAC CMSG reed and DMSG/EMSG electronic sensors to detect rod position. On air loss, the spring forces the rod to its extended fail-safe home.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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