Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10
The AirTAC SAIJ80X250-10 is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you fine-tune the retract end-position without adding external stops. It provides a usable travel window of 240-250 mm, trimming up to 10 mm off the 250 mm nominal stroke. In the 80 mm bore class, it delivers 3518 N of push force at 0.7 MPa, making it suitable for medium-to-heavy handling tasks.
This variant uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing direct mounting of position switches. The rear adjuster acts purely as a travel stop for deceleration and positioning, not as a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 250 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 SAIJ80AX250-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×250 | 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 SAIJ80AX250-10 Is Used
Machine Changeover
Dial in the retract stop on the fly when switching product sizes on a packaging line, saving downtime by avoiding physical cylinder swaps.
End-Position Tuning
Fine-tune the 240-250 mm travel window during commissioning to perfectly align tooling without machining external stop blocks.
Medium-Heavy Handling
Leverage the 3518 N push force at 0.7 MPa for positioning heavier jigs or parts on an assembly conveyor.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX250-10 the Right Cylinder?
Choose this 80 mm bore when your application requires more thrust than a 63 mm cylinder (which provides 2182 N push at 0.7 MPa) but does not need the full 5497 N push of a 100 mm unit. The adjustable stroke is ideal for machine setup and product changeovers, letting you dial in the exact end-stop during commissioning rather than swapping out a fixed-stroke SAI cylinder. Because the 250 mm stroke is relatively long, an external guide is recommended to prevent side-loading damage to the rod.
When specifying a replacement, match the 80 mm bore, 250 mm nominal stroke, 10 mm adjustment range, PT G3/8 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that the SAIJ series omits the FB, CA, CB, and CR mounts. If your process requires true load-holding without live air pressure, this cylinder will not suffice; look to the SAIL or BSAI locking series 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 SAIJ80AX250-10 FAQ
A rear external screw acts as a stopper, allowing you to shorten the effective stroke by up to 10 mm. This creates a 240-250 mm adjustable travel window. The adjuster only sets the travel end and deceleration; it does not lock or hold the load without live air pressure.
At 0.7 MPa, the SAIJ80X250-10 provides 3518 N of push force and 2268 N of pull force. It operates at a speed range of 30-800 mm/s and features a G3/8 port.
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