
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX145-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 145mm 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 SAIJ200X145-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 135-145 mm from its 145 mm nominal stroke. Delivering immense thrust, it generates 21991N at 0.7 MPa and reaches 28274N at 0.9 MPa. The extruded aluminum barrel features sensor grooves on both sides, and this unit includes a magnet for position detection.
This model uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. The rear adjuster acts as a mechanical stop to fine-tune end positions at commissioning, but it is not a lock. The cylinder relies on variable air cushions at both ends for deceleration and cannot hold a load without live air pressure.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX145-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 145 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. |
| ×145 | 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 135-145 mm closure depth on a heavy press during initial commissioning without machining custom external stoppers.
Quickly adapt a packaging line to a new carton size by turning the rear adjuster screw to modify the effective stroke end-point.
Establish a precise retraction window for a large robotic gripper, using the 10 mm trim range to clear obstacles safely.
Choose this 200 mm bore cylinder when an application requires massive force that smaller bores cannot provide, such as the 160 mm bore variant which tops out at 14074N at 0.7 MPa. The 10 mm adjustable stroke is selected when precise end-position tuning is needed during machine setup or product changeover, avoiding the need to swap out a fixed-stroke SAI cylinder. For exact ISO 15552 replacement matching, verify the 200 mm bore, 145 mm stroke, 10 mm adjustment, PT port thread, and the -S magnet requirement.
Because the stroke is under 300 mm, the 40 mm diameter rod handles side loads well without an external guide. If the machinery needs to hold the load safely without continuous air pressure, this cylinder is insufficient; consider an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) instead. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
At an operating pressure of 0.7 MPa, this 200 mm bore cylinder provides a push force of 21991N. At 0.9 MPa, the push force increases to 28274N.
The rear adjuster screw acts as a mechanical stop, allowing you to trim the effective travel back by up to 10 mm. This creates a usable 135-145 mm stroke window for fine-tuning without replacing the cylinder.
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