Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 290mm 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
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30
The AirTAC SAIJ80X290-30 is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical adjuster, allowing you to dial back the nominal 290 mm stroke by up to 30 mm. This creates a precise 260-290 mm usable travel window, perfect for fine-tuning end positions during commissioning without adding external stops. It delivers 2513 N of push force at 0.5 MPa and features a robust 25 mm carbon steel rod with an M20x1.5 thread.
The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. It uses a PT tapered port and relies on adjustable air cushions at both ends to decelerate the load. Remember that the rear adjuster acts only as a travel stop, not a load-holding lock, so live air pressure is required to maintain position.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 290 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 SAIJ80X290-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×290 | 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 SAIJ80X290-30 Is Used
Machine Setup Commissioning
Fine-tune the 260-290 mm travel window during initial machine build to perfectly dial in the end-of-stroke position without machining custom spacers.
Product Size Changeover
Quickly adjust the retract stop on packaging lines when switching between different product sizes, using the 30 mm adjustment range to adapt the stroke on the fly.
Variable End-Stop Positioning
Set precise lower-end positions for assembly presses that need slight travel variations between runs while utilizing the 2513 N push force at 0.5 MPa.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X290-30 the Right Cylinder?
Choose this 80 mm bore when you need higher thrust than a 63 mm cylinder (1559 N at 0.5 MPa) but want to avoid the bulk of a 100 mm unit. The adjustable stroke is ideal for product changeovers or variable end-stops on a line, providing setup flexibility that a fixed SAI cylinder cannot match. Because the stroke is 290 mm, the 25 mm rod handles moderate side loads, but you should still use an external guide for long unsupported travel to prevent premature wear.
To replace an ISO 15552 cylinder with this model, match the 80 mm bore, 290 mm nominal stroke, 30 mm adjustment range, PT port thread, and the required mounting accessory. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR options. If your application requires holding a load without continuous air pressure, consider the SAIL or BSAI locking cylinders 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 SAIJ80 Adjustable Cylinder SAIJ80X290-30 FAQ
At a standard 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 4523 N of push force at the maximum 0.9 MPa pressure.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 290 mm nominal stroke down to as little as 260 mm. This allows you to set the exact end position at commissioning without replacing the cylinder.
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