
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X45-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 45mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
The AirTAC SAIJ200X45-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster.
It uses a PT tapered G3/4 port and a 40mm carbon steel rod with M36x2 thread to handle high side loads. The extruded aluminum barrel includes dual sensor grooves for CMSE or DMSE switches, while the rear stopper solely sets the end position—it is not a lock.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X45-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 45 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 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. |
|---|---|
| 200 | Bore size in mm. |
| ×45 | 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 25 to 45mm travel window during machine commissioning to accommodate varying material thicknesses without external stops.
Quickly adjust the end-stop position on automated lines when switching product sizes, saving setup time and eliminating hardware swaps.
Choose this 200mm bore when 160mm (10053N at 0.5MPa) is insufficient for your extreme push requirements. The adjustable stroke is ideal for fine-tuning end positions during machine setup or product changeovers without swapping cylinders or adding external stops. For holding loads without live air, select a SAIL or BSAI cylinder instead, as this adjuster only acts as a travel stop.
When replacing an ISO 15552 cylinder, match the 200mm bore, 45mm stroke, 20mm adjustment, PT G3/4 port, and standard carbon steel rod. Supported mounts include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
It can reach a maximum push force of 3204 kgf at 1.0MPa.
The rear adjuster screw allows you to shorten the 45mm nominal stroke by up to 20mm, creating a 25-45mm usable travel window. This stopper sets the end position but does not lock or hold the load without live air pressure.
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