Airtac SAIJ40 Adjustable Cylinder SAIJ40AX280-75
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX280-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 280mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke280 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX280-75
The AirTAC SAIJ40X280-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 205 to 280 mm window. This on-the-fly positioning flexibility eliminates the need to physically swap out the entire barrel when adapting to new product dimensions.
This specific configuration utilizes an SUS420J2 stainless steel rod (material code A) for superior corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic solid-state switches. Because the 280 mm stroke is relatively long for this 40 mm bore, external guide rails should be used to prevent excessive side-loading on the piston rod.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX280-75 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX280-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX280-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×280 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX280-75 Is Used
Variable End-Stop Positioning
Dial in the retract distance precisely within the 205-280 mm window during machine commissioning to accommodate varying material thicknesses without changing hardware.
Product Size Changeovers
Quickly reconfigure the stroke length on packaging lines when switching between different carton or product dimensions, drastically reducing setup downtime.
Sensor Mounting Flexibility
Leverage the dual-side sensor grooves to mount DMSE solid-state sensors for precise position detection, independent of where the rear adjuster is set.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX280-75 the Right Cylinder?
Choose this 75 mm adjustment variant when your machine setup requires frequent end-position calibration across a wide 205-280 mm travel range, rather than relying on a fixed 280 mm stroke SAI cylinder. The SAIJ mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting the FB, CA, CB, and CR foot and pivot brackets.
Keep in mind that the rear adjuster functions purely as a mechanical travel stop to set the retract position, not as a locking device. The cylinder cannot hold a load without continuous live air pressure. If your setup demands true fail-safe load holding, consider using an AirTAC SAIL pneumatic lock cylinder or an external pilot-operated check valve instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ 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 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX280-75 FAQ
A rear external stopper screw allows you to mechanically shorten the standard 280 mm stroke by up to 75 mm. This creates a usable travel window of 205 to 280 mm, enabling fine-tuning of the end position at commissioning without adding external stops.
The maximum theoretical force at 1.0 MPa is 128 kgf.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40AX280-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.