
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX170-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 170mm 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 SAIJ200X170-50 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications requiring precise end-position tuning. A rear adjusting screw allows you to trim the nominal 170 mm stroke back by up to 50 mm, creating a flexible 120 to 170 mm usable travel window without swapping hardware. At 0.5 MPa it generates 15708 N of push force and 15080 N of pull force, making it ideal for high-thrust tasks.
This unit features a SUS304 stainless steel rod for superior corrosion resistance and operates at speeds of 30-500 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, though this configuration omits the magnet required for CMSE or DMSE electronic switches. The rear stopper acts purely as a travel limit and does not hold the load without continuous air pressure.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX170-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 170 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. |
| ×170 | 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 120 to 170 mm bottoming position during heavy press commissioning without machining new spacers.
Quickly adjust the rear stopper by up to 50 mm to accommodate different sized pallets or workpieces on a high-thrust line.
Replace rigid fixed stops with a tunable 50 mm window to perfect deceleration and end-of-stroke positioning on large actuators.
Selecting this 200 mm bore cylinder makes sense when your machinery demands extreme thrust, such as 15708 N at 0.5 MPa, alongside variable end-stops for product changeovers. If your application requires less force, stepping down to a 160 mm bore yields 10053 N of push force while saving physical space. The adjustable stroke is chosen over a fixed SAI cylinder when you need on-the-fly commissioning fine-tuning rather than machining external stops.
For load-holding without live air pressure, note that the SAIJ adjuster is a stop, not a lock; you would need an external pilot-operated check valve or a related SAIL lock cylinder. This SAIJ200X170-50 configuration includes a SUS304 rod, PT tapered ports, and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. Because the stroke is 170 mm, side-load is minimal, but always ensure proper external guiding for the massive 40 mm rod and heavy loads.
Quick checklist
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At a maximum 1.0 MPa, it can deliver up to 3204 kgf.
The rear adjuster screw lets you shorten the 170 mm nominal stroke by up to 50 mm, providing an effective travel window of 120 to 170 mm. This stopper only sets the end position and does not lock the load without air pressure.
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