Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-100
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX250-100 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke250 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 SAIJ80BX250-100
The AirTAC SAIJ80X250-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 100 mm. This yields a usable window of 150-250 mm, letting you dial in the exact retract end-position during commissioning without adding external stops. In this configuration, the 25 mm rod is SUS304 stainless steel and the fluid ports are PT tapered threads.
The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting, while the adjustable rear stopper acts purely as a travel limiter and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-100 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-100 |
|---|---|
| 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 | 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 SAIJ80BX250-100
| 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 SAIJ80BX250-100 Is Used
Machine Changeover Tuning
Quickly adjust the 150-250 mm travel window during product size changeovers on packaging lines without disassembling the cylinder or adding external mechanical stops.
End-Stop Calibration
Fine-tune the exact retract position at machine commissioning to achieve precise part seating, using the rear screw to compensate for mechanical tolerances.
Variable Stroke Diverter
Actuate sorting arms or diverters on a conveyor where the required extension distance varies by package size, easily dialed in via the 100 mm adjustment range.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-100 the Right Cylinder?
Choose this SAIJ80X250-100 when your setup requires a wide 150-250 mm retract window for product changeovers or fine-tuning machinery stops. If you need less force, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa, whereas a 100 mm bore provides 3927 N for heavier loads. Because the 250 mm stroke exceeds 300 mm only marginally, side-load risks are moderate, but an external guide is still recommended for unsupported lateral loads.
This model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. It is dimensionally interchangeable per ISO 15552. To replace a fixed-stroke unit, match the 80 mm bore, 250 mm nominal stroke, 100 mm adjuster, PT ports, and SUS304 rod. For applications requiring the cylinder to hold a load without continuous air pressure, select a SAIL locking cylinder or an external rod lock, as the SAIJ adjuster is a stop, not a brake.
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 SAIJ80BX250-100 FAQ
At the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw lets you shorten the nominal 250 mm stroke by up to 100 mm, creating a usable travel window of 150-250 mm. It acts as a mechanical stop to set the end position and does not function as a lock to hold the load without live air.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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