
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX475-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 475mm 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 SAIJ200X475-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust for heavy-duty automation. It yields a usable travel window of 425 to 475 mm, letting you dial in the exact retract position without swapping hardware. At 0.7 MPa it generates 21991 N of push force, while the SUS420J2 stainless steel rod provides excellent corrosion resistance. The extruded aluminum barrel features sensor grooves on both sides, and the PT tapered port ensures a tight pneumatic seal.
This 200 mm bore unit omits the FB, CA, CB, and CR mounts, utilizing a focused array of Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces. The rear stopper acts purely as a travel end setter for product changeovers; it is not a lock and will not hold a load without live air. For position holding without pressure, an external rod lock or a related SAIL cylinder is required.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX475-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 475 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. |
| ×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.
Fine-tune the 425-475 mm retract position on large presses during product size transitions without installing external mechanical stops.
Dial in the exact end-of-stroke contact point for heavy part seating, leveraging the 21991 N push force at 0.7 MPa for precise positioning.
Utilize the 475 mm travel for extending heavy tooling, using the 50 mm rear adjuster to compensate for mechanical tolerance stack-up at commissioning.
Choose this 200 mm bore when 160 mm (14074 N push at 0.5 MPa) cannot move your load, as the SAIJ200X475-50 provides 15708 N at the same pressure. The 50 mm adjustment window is ideal for production lines running slightly varying product sizes, allowing rapid end-stop tuning during changeovers instead of physical cylinder replacement. When specifying a replacement, verify the 475 mm stroke, 50 mm adjust code, PT port threads, and the SUS420J2 rod material.
Because the 475 mm stroke is substantial, the 40 mm rod and M36x2 thread still require an external guide to prevent excessive side-loading on the piston. Operating speed spans 30-500 mm/s, and the 50 mm air cushions absorb kinetic energy at both ends. Remember that the rear adjuster only sets the travel limit; it cannot brake or hold the load pneumatically.
Quick checklist
At 0.7 MPa, this 200 mm bore cylinder provides 21991 N of push force and 15080 N of pull force. At the maximum operating pressure of 1.0 MPa, it achieves a push force of 15708 N.
The rear adjuster screw allows you to shorten the nominal 475 mm stroke by up to 50 mm, creating a 425-475 mm usable travel window. This stopper sets the end position but does not lock or hold the load without continuous air pressure.
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