
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX100-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 100mm 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.
The AirTAC SAIJ80X100-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. The integrated adjustment screw allows you to shorten the effective stroke, creating a usable travel window of 50 to 100 mm for precise end-position tuning without external stops.
This unit is built with a SUS304 stainless steel rod for superior corrosion resistance and features an extruded aluminum barrel with sensor grooves on both sides. It supports a speed range of 30-800 mm/s and uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. The rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX100-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 100 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.
| 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.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×100 | 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.
Dial in the exact 50 to 100 mm travel window during commissioning to fine-tune end positions without machining new external stopper blocks.
Quickly adapt the stroke on packaging lines when product dimensions change, using the rear screw to shorten the retraction distance on the fly.
The 50mm adjustment range is ideal for machine setups requiring variable end-stops during product changeovers, saving the effort of swapping out a fixed-stroke SAI cylinder. Because the stroke is 100mm, side-load risks are minimal, but always guide the load for stability.
For load-holding without continuous air pressure, select a SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead, as this plain SAIJ adjuster cannot brake or hold a suspended load. To replace this ISO 15552 cylinder, match the 80mm bore, 100mm nominal stroke, 50mm adjustment, PT G3/8 port, and SUS304 rod material.
Quick checklist
It achieves a maximum push of 513 kgf at 1.0 MPa.
The rear adjuster screw lets you trim the nominal 100mm stroke back by up to 50mm, yielding a usable travel window of 50 to 100mm. It functions purely as a mechanical stop and does not lock or hold the load without live air.
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