
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX150-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 150mm stroke, G1/2 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 SAIJ100X150-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 50 mm. This creates a highly versatile 100-150 mm usable window, letting you dial in the exact retract end-position during commissioning without adding external stops or swapping the cylinder. In the 100 mm bore class, it delivers a robust 3927 N of push force at 0.5 MPa.
This SKU is configured with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. The extruded aluminum barrel features sensor grooves on both sides, seamlessly supporting AirTAC CMSE reed and DMSE electronic solid-state switches. Unlike fixed-stroke SAI units, this adjustable model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR options.
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX150-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 150 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 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 | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 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. |
|---|---|
| 100 | Bore size in mm. |
| ×150 | 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 retract distance within a 100-150 mm window during machine setup, eliminating the need to machine custom spacers for every new product variant.
Quickly adjust the physical stroke limit on packaging lines when switching between different package sizes, ensuring precise and repeatable mechanical positioning.
Leverage the SUS304 stainless steel rod to drive tooling or clamps in washdown or mildly corrosive manufacturing areas where standard carbon steel rods would fail.
Choose this 100 mm bore if your process requires substantial force (3927 N push at 0.5 MPa) but demands variable end-stops for product changeovers. If you need less force and a smaller footprint, stepping down to the 80 mm bore yields 2513 N at 0.5 MPa. Remember that the rear adjuster acts only as a travel stop to decelerate the load; it does not hold the load without live air. For true pneumatic load-holding, consider the SAIL or BSAI clamp-lock series instead.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 150 mm nominal stroke, 50 mm adjustment range, G1/2 PT tapered port, and the -S magnet requirement. Because the 150 mm stroke is relatively short for this bore, side-load concerns are minimal, but the 25 mm rod and M20x1.5 thread provide excellent rigidity for any off-center loads.
Quick checklist
The rear adjuster acts as an external stop that lets you shorten the 150 mm nominal stroke by up to 50 mm, providing a usable travel window of 100-150 mm. It sets the end-position and works with the air cushion to decelerate the load, but it does not lock or hold the load without continuous air pressure.
At 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. Because it includes a magnet (-S), it is fully compatible with AirTAC CMSE reed switches and DMSE electronic solid-state sensors mounted in the dual-side barrel grooves.
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