Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X20SCA
The AirTAC Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X20SCA is a genuine single acting, pull (spring extend) aluminum-barrel mini round cylinder with a Ø40mm bore and 20mm 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
- Stroke20 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 MTBL40X20SCA
The AirTAC MTBL40X20SCA is a compact single-acting pull-type mini cylinder with a 40mm bore and 20mm stroke. Air retracts the rod while an internal spring extends it, yielding a fail-safe extended home position. It delivers a usable pull force of 339.1 N at 0.5 MPa and 550.1 N at 0.7 MPa. The 20mm stroke is well-suited for short, high-force tensioning or drawing mechanisms closed in tight spaces.
This SKU features a CA pivot/clevis back cover that swings on a pin to accommodate arcing angular loads. The built-in magnet (-S) supports AirTAC CMSG (reed) and DMSG or EMSG (electronic) sensor switches for precise position detection. It uses a G1/4 port, a 16mm hard-chrome carbon-steel rod, and a riveted aluminum barrel. End-of-stroke deceleration relies on a fixed rubber bumper, as single-acting designs lack adjustable air cushions.
Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X20SCA Technical Specifications
| Model | Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X20SCA |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø40 mm |
| Stroke | 20 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 MTBL40X20SCA
| MTBL | Single acting, pull (spring extend) aluminum-barrel mini cylinder. |
|---|---|
| 40 | Bore size in mm (20/25/32/40). |
| ×20 | 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 MTBL40X20SCA Is Used
Stamping Press Draw Bar
Pulls a heavy draw bar closed with 339.1 N at 0.5 MPa to seat sheet metal blanks, relying on the spring to safely push the bar back out when air is cut.
Packaging Film Tensioner
Draws a web-tensioning roller backward on a short 20mm stroke, using the CA pivot to absorb angular misalignment as the film pulls off-center.
Gate Latch Retractor
Retracts a heavy security latch to allow access, using the 550.1 N pull force at 0.7 MPa, while the spring-extend fail-safe home keeps the gate locked during air loss.
Is the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X20SCA the Right Cylinder?
For lighter duty, the 32mm bore neighbor provides 224.8 N at 0.5 MPa, while the 40mm bore here offers 339.1 N at 0.5 MPa, making it the largest standard option in this mini series. Choose this MTBL pull-type when your process requires a fail-safe extended rest position upon air loss, contrasting with the MSBL push-type which fails safe retracted. A double-acting MBL is better if you need powered force in both directions.
Operating pressure must be at least 0.2 MPa to overcome the return spring. Never apply external load to the spring-extend return stroke. To replace this unit, match the 40mm bore, 20mm stroke, PT thread, CA pivot back cover, and the -S magnet. The short 20mm stroke minimizes rod bending, but always ensure the clevis pin is free to rotate to prevent side-load binding.
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 MTBL40X20SCA FAQ
The usable pull force, already net of the return spring, 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 spring and retract the rod.
It is a single-acting pull type, so air retracts the rod and the internal spring extends it. On air loss, the spring drives the rod to a fail-safe extended home position. The -S built-in magnet allows CMSG (reed) or DMSG and EMSG (electronic) sensors to detect this position.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC Mini Cylinders
Request a Quote for Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL40X20SCA
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.