
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX260-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 260mm 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 SAIJ200X260-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the 260 mm nominal travel back by up to 50 mm, yielding a 210-260 mm usable end-position window. Belonging to the heaviest force class, it generates 15708 N of push thrust and 15080 N of pull thrust at 0.5 MPa, utilizing a robust 40 mm piston rod and G3/4 PT tapered port. The extruded aluminum barrel incorporates sensor grooves on both sides, allowing direct mounting of electronic DMSE or reed CMSE switches if position feedback is later required.
Equipped with a 50 mm adjustment screw at the rear, this unit allows operators to fine-tune the retract end-position during commissioning without physically swapping the cylinder or adding external stops. The rod is constructed from SUS420J2 stainless steel (code A) for enhanced durability against minor moisture or corrosion, while the 40 mm rod diameter and M36x2 thread provide a highly rigid interface capable of handling substantial side loads. This SAIJ configuration uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting the FB, CA, CB, and CR brackets.
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX260-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 260 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. |
| ×260 | 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 210-260 mm end-stop for heavy pressing operations without changing out the entire cylinder during product changeovers.
Use the 50 mm rear adjuster to fine-tune the retract distance during machine commissioning, compensating for mechanical wear or fixture variations.
Adapt the stroke window on the fly for conveyor lines processing varying package sizes, ensuring precise positioning without external stops.
Selecting this 200 mm bore model is appropriate when your application requires the massive 15708 N push force at 0.5 MPa, which is nearly double the 10053 N output of the neighboring 160 mm bore. The 50 mm adjustment range is ideal for machinery requiring variable end-stops to accommodate different product sizes on a single line. Because the stroke is 260 mm, which is below the 1500 mm maximum standard stroke for this bore, it is a standard catalog item, though the 40 mm rod should still be guided over long unsupported travels to prevent premature seal wear.
When specifying this cylinder, note that the rear adjuster acts strictly as a travel stop and works in tandem with the adjustable air cushions at both ends to decelerate the load. It does not function as a lock or brake, and the cylinder will not hold its position without live air pressure. If your application requires true load-holding without continuous air supply, you should evaluate the AirTAC SAIL (air-released lock) or BSAI (clamp-lock) series instead. For dimensionally interchangeable ISO 15552 drop-in replacements, match the 200 mm bore, 260 mm stroke, 50 mm adjustment, G3/4 PT port, and the desired mounting bracket.
Quick checklist
At an operating pressure of 0.5 MPa, this 200 mm bore cylinder provides a push force of 15708 N and a pull force of 15080 N. At the maximum operating pressure of 1.0 MPa, it delivers up to 3204 kgf.
The rear adjuster screw allows you to shorten the 260 mm nominal stroke by up to 50 mm, creating a usable travel window of 210-260 mm. This stopper fine-tunes the end position but does not lock the load; live air pressure is required to hold position.
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