
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80AX200-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 200mm 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 SAIJ80X200-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to 180-200 mm. By turning the external stopper screw at the retract end, you can dial in the exact end-position at commissioning without swapping out the barrel or bolting on external stops. The 80 mm bore delivers substantial thrust, pushing 3518 N at 0.7 MPa and 4523 N at 0.9 MPa.
This unit uses a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and features PT tapered port threads (G3/8). It supports speeds of 30-800 mm/s and includes variable air cushions at both ends. The extruded aluminum barrel provides sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX200-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 200 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. |
| ×200 | 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.
Quickly adjust the travel window from 180 to 200 mm during line changeovers to accommodate varying package sizes without changing cylinders.
Fine-tune the retract stop during commissioning to perfect the seating of heavy 80 mm bore components, avoiding the need for external mechanical stops.
The adjustable stroke is ideal for machine setups requiring variable end-stops during product changeovers. Because the nominal stroke is 200 mm, you do not need external guides, but always account for side loads when attaching rigid components.
Remember that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure. For true load-holding requirements without continuous air supply, consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead. This SAIJ model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
It features a rear external adjusting screw that allows you to shorten the effective stroke by up to 20 mm. This gives you a usable travel window of 180-200 mm, letting you set the exact retract end-position at commissioning without replacing the cylinder.
The pull force at 0.7 MPa is 2268 N. It operates at speeds between 30 and 800 mm/s.
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