Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL25X40SU
The AirTAC Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL25X40SU is a genuine single acting, pull (spring extend) aluminum-barrel mini round cylinder with a Ø25mm bore and 40mm stroke, G1/8 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.
- BoreØ25 mm
- Stroke40 mm
- Port sizeG1/8
- Acting typeSingle acting, pull (spring extend)
- Rod threadM10×1.25
- CushionFixed rubber bumper
About the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL25X40SU
The AirTAC MTBL25X40SU is a compact single-acting pull-type mini cylinder with a 25mm bore and 40mm stroke. Air retracts the rod while an internal spring extends it, yielding a usable pull force of 132.6 N at 0.5 MPa. The riveted rolling-packed aluminum barrel keeps the body light for tight spaces, and the 20 µm hard-chrome plating on the carbon-steel rod wards off scuffing. The U suffix denotes a flat-end back cover for rigid rear mounting.
Because the -S code indicates a built-in magnet, this unit supports AirTAC CMSG (reed) and DMSG or EMSG (solid-state) sensor switches for position detection. The fixed rubber bumper absorbs end-of-stroke impact, as single-acting designs lack adjustable air cushions. Overall length follows the A + 2 x stroke rule, making the body longer than a double-acting equivalent.
Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL25X40SU Technical Specifications
| Model | Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL25X40SU |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Single acting, pull (spring extend) |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Pull force (net of spring) |
|---|---|
| 0.5 MPa | 132.6 N |
| 0.7 MPa | 215.0 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 MTBL25X40SU
| MTBL | Single acting, pull (spring extend) aluminum-barrel mini cylinder. |
|---|---|
| 25 | 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 MTBL25X40SU Is Used
Packaging Flap Sealing
Draws a carton flap closed during hot-melt glue application. The 132.6 N pull force at 0.5 MPa seats the panel firmly while the adhesive sets.
Textile Tensioning
Pulls a fabric guide roller inward to maintain web tension. The spring-extend fail-safe releases the material safely if the air supply drops.
Print Head Retraction
Withdraws an inkjet print head from a moving substrate. The 40mm stroke provides clearance, and the CMSG reed switch confirms the retracted position.
Is the Airtac MTBL Single Acting Aluminum Alloy Mini Cylinder MTBL25X40SU the Right Cylinder?
When sizing this 25mm bore, stepping down to the 20mm version drops your usable pull force to 84.8 N at 0.5 MPa, while stepping up to the 32mm bore raises it to 224.8 N. Choose the MTBL pull-type over the MSBL push-type when a fail-safe extended home position is required upon air loss. A minimum of 0.2 MPa is needed to overcome the return spring, and you must avoid applying any external load during the spring-extend stroke. For a direct replacement, match the 25mm bore, 40mm stroke, G1/8 port, PT thread, U flat-end 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 MTBL25X40SU FAQ
The usable pull force is 132.6 N at 0.5 MPa and 215 N at 0.7 MPa. Operating pressure must be 0.2-1.0 MPa, requiring a minimum of 0.2 MPa to retract the rod against the internal spring.
Air retracts the rod, and the spring extends it. On air loss, the spring drives the rod to its extended fail-safe home. The -S code means a magnet is fitted for CMSG, DMSG, or EMSG sensors to detect rod 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 MTBL25X40SU
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.