
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 180mm stroke, G1/2 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 SAIJ100X180-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 130-180 mm usable travel window from its 180 mm nominal stroke. Equipped with a SUS304 stainless steel rod, it delivers 7068 N of push force at 0.9 MPa, making it suitable for heavy-duty positioning. The extruded aluminum barrel includes sensor grooves on both sides.
This model uses a PT tapered G1/2 port and omits the magnet option. The rear stopper allows you to fine-tune the retract end position at commissioning without adding external stops. Remember the adjuster only sets the travel end; it does not hold the load without live air pressure.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX180-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 180 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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. |
|---|---|
| 100 | Bore size in mm. |
| ×180 | 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 130 to 180 mm end-stop during format changeovers without physically replacing the cylinder or adding mechanical shims.
Leverage the 7068 N push force at 0.9 MPa for high-load stamping or holding, using the rear screw to tune the bottoming position precisely.
Fine-tune the retract position during initial machine setup to compensate for mechanical tolerances across the tooling layout.
Choose this 100 mm bore when the 80 mm class (4523 N push at 0.9 MPa) is insufficient for your load. The 50 mm adjustment range is ideal for production lines running multiple product sizes, letting you dial in the exact end-stop on the fly instead of swapping to a fixed-stroke SAI cylinder. For load-holding without continuous air, use an external rod lock or pilot-operated check valve, or switch to the SAIL or BSAI series.
To match this ISO 15552 cylinder for a direct replacement, verify the 180 mm stroke, 50 mm adjuster code, PT G1/2 port, and SUS304 (B) rod material. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the stroke is under 300 mm, side-load stress is moderate, but always guide the load externally for optimal bearing life.
Quick checklist
At an operating pressure of 0.9 MPa, this 100 mm bore cylinder provides a push force of 7068 N and a pull force of 3681 N. The maximum push force is 801 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 50 mm. This creates a usable travel window of 130 to 180 mm from the factory 180 mm stroke, though it only stops travel and does not lock the load without air pressure.
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