Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 240mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke240 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20S
The AirTAC SAIJ80X240-20-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you dial the effective travel back by 20 mm to fine-tune end positions. This yields a usable 220-240 mm travel window, ideal for machine changeovers without swapping hardware. It delivers 2513 N of push force at 0.5 MPa and operates at 30-800 mm/s.
This SKU features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and because it carries the -S magnet, it directly supports AirTAC CMSE reed and DMSE electronic solid-state switches. The mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 240 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×240 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX240-20S Is Used
Variable End-Stop Tuning
Dial in the exact 220 to 240 mm end position during machine setup to compensate for mechanical tolerances without adding external stopper blocks.
Product Size Changeover
Quickly shorten the retract distance by up to 20 mm on a packaging line when switching to a smaller carton format, minimizing downtime.
Precision Ejection
Use the fine-tune adjustment to alter the ejection point of a part, ensuring it clears a fixture precisely before the full return stroke.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20S the Right Cylinder?
Choose this 80 mm bore when an application demands more push force than a 63 mm cylinder (1559 N at 0.5 MPa) but less than a 100 mm unit (3927 N). The adjustable stroke is selected over a fixed SAI when you need a variable end-stop for product size changes or commissioning precision. To match this ISO 15552 replacement exactly, verify the 240 mm stroke, 20 mm adjustment, PT G3/8 port, and -S magnet.
Since the stroke is 240 mm, the 25 mm rod and M20x1.5 thread provide rigidity, but an external guide rail is still recommended to prevent side-load damage on long unsupported travels. Remember, the rear adjuster is a travel stop, not a lock; the SAIJ does not hold loads without live air. For true load-holding, use a SAIL or BSAI cylinder.
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 SAIJ80 Adjustable Cylinder SAIJ80AX240-20S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can deliver up to 513 kgf at the maximum 1.0 MPa pressure.
A rear external screw acts as a stopper, allowing you to shorten the 240 mm nominal stroke by up to 20 mm. This creates a 220-240 mm usable travel window for fine-tuning end positions at commissioning without replacing the cylinder.
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.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80AX240-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.