
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 475mm 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.
The AirTAC SAIJ80X475-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits up to 30 mm of travel reduction. This yields a usable stroke window of 445 to 475 mm, allowing precise end-position tuning during commissioning without adding external stops. The 80 mm bore delivers 2513 N of pull force at 0.5 MPa and up to 4523 N at 0.9 MPa.
This variant features a SUS420J2 stainless steel rod for enhanced corrosion resistance and a PT tapered port thread. It carries a 25 mm rod and M20x1.5 thread, which provides robust side-load capacity, though the 475 mm stroke requires an external guide for unsupported loads. The extruded aluminum barrel includes dual sensor grooves, and the mounting set spans Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX475-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 475 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 | 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.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×475 | 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 445 to 475 mm travel distance during commissioning to perfect end-of-stroke positioning without swapping cylinders.
Quickly adapt the rear stop for different product lengths on a conveyor line, trimming up to 30 mm of stroke on the fly.
Provide adjustable retraction limits for automated machinery setups where the exact retracted position varies per job.
Select this 80 mm bore when an application requires 2513 N pull force at 0.5 MPa, stepping up from a 63 mm bore that provides 1402 N, or down from a 100 mm bore yielding 3681 N. The adjustable stroke is chosen over a fixed SAI cylinder when you need a variable end-stop for product changeovers. Note that the rear adjuster acts as a travel stop, not a lock; the SAIJ does not hold loads without live air. For load-holding without pressure, use an external rod lock or pilot-operated check valve. Because the stroke is 475 mm, an external guide is necessary to prevent rod side-loading. This SKU matches an ISO 15552 replacement with an 80 mm bore, 475 mm nominal stroke, 30 mm adjustment, PT port, and no magnet.
Quick checklist
At 0.5 MPa it provides 2513 N pull force, increasing to 4523 N at 0.9 MPa. The maximum push force is 513 kgf at 1.0 MPa.
A rear screw stopper lets you shorten the 475 mm nominal stroke by up to 30 mm, creating a 445 to 475 mm usable travel window. It acts as a travel stop, not a lock.
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