
The AirTAC SAIJ160 Adjustable Cylinder SAIJ160BX185-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 185mm 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 SAIJ160X185-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window between 135 and 185 mm without swapping components. Equipped with a SUS304 stainless steel rod, it provides 10053 N of pull force at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered port threads ensure a tight pneumatic connection.
Because the rear mechanism functions strictly as a travel stop and not a lock, it cannot hold a load without live air pressure. For applications requiring true load-holding, consider the SAIL or BSAI series. This model supports speeds of 30-500 mm/s and uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX185-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 185 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 | 9425 N | 9425 N |
| 0.7 MPa | 13195 N | — |
| Max (@1.0 MPa) | 1922 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. |
|---|---|
| 160 | Bore size in mm. |
| ×185 | 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 retract distance from 135 to 185 mm during machine commissioning to accommodate varying material thicknesses without external stopper blocks.
Quickly adapt the stroke length on a packaging line when switching to a different product size, using the rear screw to set the new end position.
Achieve precise clamping positions on large fixtures by micro-adjusting the travel end, leveraging the 10053 N pull force for secure holding.
Choose this 160 mm bore when you need substantial thrust, such as 10053 N pull at 0.5 MPa, combined with on-machine adjustability. If your application requires less force, stepping down to a 125 mm bore yields 5734 N of pull, whereas moving up to a 200 mm bore offers 15080 N. The 50 mm adjustment range is ideal for product changeovers, allowing you to dial in the exact end position without adding external stops.
When replacing an ISO 15552 cylinder, match the 160 mm bore, 185 mm stroke, PT port threads, and the specified SUS304 rod material. Since the total stroke is 185 mm, an external guide is recommended to manage side loads on the 40 mm rod. Note that this SAIJ variant omits FB, CA, CB, and CR mounts.
Quick checklist
At the maximum operating pressure of 1.0 MPa, it achieves 2050 kgf.
The rear adjuster acts as a stopper that can trim the nominal 185 mm stroke back by up to 50 mm, creating a usable travel window of 135 to 185 mm. It sets the end position but does not lock the load without live air pressure.
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