
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX225-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 225mm stroke, G3/4 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 SAIJ200X225-20 is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty applications. It features a rear adjusting screw that allows you to fine-tune the effective stroke, providing a usable travel window of 205 to 225 mm without requiring physical cylinder replacement. With a 200 mm bore, it delivers a maximum thrust of 3204 kgf at 1.0 MPa, making it ideal for high-force operations.
This unit is configured with a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. It utilizes adjustable air cushions at both ends to decelerate the massive moving load smoothly.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX225-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 225 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 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. |
|---|---|
| 200 | Bore size in mm. |
| ×225 | 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 205-225 mm end-stop during machine setup to ensure consistent, high-force pressing of thick materials without over-traveling the tooling.
Adjust the retract stroke on the fly during product size changeovers to precisely position heavy diverters on a packaging line.
Fine-tune the clamping position for large molds, utilizing the 3204 kgf force while accommodating slight variations in workpiece dimensions.
Selecting this 200 mm bore model provides immense thrust, stepping up significantly from the 160 mm bore which yields 2050 kgf at 1.0 MPa. The adjustable stroke is chosen when you need precise end-position tuning at commissioning or during product changeover, avoiding the need to bolt on external stops. Remember that the rear adjuster functions strictly as a travel stop and does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
As a dimensionally interchangeable ISO 15552 cylinder, this SKU matches the following exact configuration: 200 mm bore, 225 mm stroke, 20 mm adjustment range, PT port threads, and no magnet. Because the 225 mm stroke exceeds 300 mm only marginally, side-loading is moderate, but for any unsupported long travels, an external guide is still recommended to protect the M36x2 rod thread. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options.
Quick checklist
At the maximum operating pressure of 1.0 MPa, this 200 mm bore cylinder generates a push force of 3204 kgf. At a standard 0.5 MPa, it provides 15708 Newtons of push force.
The rear adjuster screw acts as a mechanical stop that lets you shorten the nominal 225 mm stroke by up to 20 mm, creating a usable travel window of 205 to 225 mm. It functions as a travel stop and does not lock the load without live air pressure.
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