Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX290-50 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 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 SAIJ80 Adjustable Cylinder SAIJ80BX290-50
The AirTAC SAIJ80X290-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the effective travel by up to 50 mm. This creates a usable 240-290 mm stroke window, giving you exact end-position control at commissioning without swapping out the barrel or adding external stops.
This unit is configured with a SUS304 stainless steel rod for superior corrosion resistance and ships with PT tapered port threads. The extruded aluminum profile includes dual sensor grooves, ready for your CMSE reed or DMSE electronic switches if you add a magnet later. Remember that the rear adjuster functions purely as a travel stop to set deceleration endpoints; it does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-50 |
|---|---|
| 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 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 SAIJ80 Adjustable Cylinder SAIJ80BX290-50
| 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 SAIJ80BX290-50 Is Used
Machine Changeovers
Dial in the 240-290 mm travel window during product size transitions to set new end-stops rapidly without changing the cylinder.
End-Position Tuning
Fine-tune the retract position at commissioning using the rear stopper to perfect the mechanical timing of your process.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod in humid or washdown manufacturing environments where standard carbon steel rods would pit.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX290-50 the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your machine setup requires frequent product-size changeovers or precise variable end-stops. If you need slightly less force, stepping down to a 63 mm bore yields 2182 N at 0.7 MPa, while moving up to a 100 mm bore provides 5497 N. For load-holding without continuous air pressure, this cylinder will not suffice—you should look to the SAIL (air-released lock) or BSAI (clamp-lock) variants instead.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 290 mm nominal stroke, 50 mm adjustment range, PT G3/8 ports, and your required mounting accessory. SAIJ supports a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 290 mm stroke is substantial, the 25 mm rod diameter handles high side loads well, but you should still utilize an external guide rail to prevent binding on long unsupported travels.
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 SAIJ80BX290-50 FAQ
The rear adjuster acts as a mechanical stop that shortens the 290 mm nominal stroke by up to 50 mm, providing an adjustable 240-290 mm travel window. It sets the end position but does not lock the load without live air.
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