
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 115mm stroke, G3/8 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 SAIJ63X115-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 115 mm stroke that can be dialed back by up to 100 mm, creating a highly versatile 15-115 mm usable travel window. This wide adjustment range is ideal for prototyping and machine setups where the exact end position needs fine-tuning at commissioning without swapping cylinders. Delivering 1559 N of pull force at 0.5 MPa, it handles robust actuation tasks.
This model includes a magnet for position sensing and uses a SUS420J2 stainless steel rod for enhanced durability against minor corrosion or scoring. The extruded aluminum barrel features sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE solid-state switches. It offers a G3/8 port and variable air cushions at both ends to decelerate the load, though the rear stopper and cushions do not hold the load without live air pressure.
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 115 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×115 | 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 15-115 mm travel window during product size transitions without physically replacing the actuator or adding external stops.
Fine-tune the exact end position at commissioning to find the optimal stroke distance for a new assembly process.
Adjust the rear stopper screw on the fly to accommodate varying material thicknesses or positioning requirements on the fly.
Choose this 63 mm bore when your application requires 1559 N pull force at 0.5 MPa (or 2182 N push at 0.7 MPa) alongside extreme stroke flexibility. If you need less force, stepping down to a 50 mm bore yields 825 N pull, whereas an 80 mm bore provides 2268 N pull for heavier loads. The SAIJ63X115-100-S is selected over a fixed SAI cylinder when you need a variable end-stop for product changeovers. Because the stroke is 115 mm, an external guide is not strictly required, but always ensure the load is supported to prevent rod side-loading.
For ISO 15552 replacement matching, specify a 63 mm bore, 115 mm nominal stroke, 100 mm adjustment range, PT tapered G3/8 port, and the -S magnet option. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Remember that the rear adjuster acts as a travel stop, not a lock; for true load-holding without live air, select an SAIL or BSAI cylinder.
Quick checklist
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 1402 N of push force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw allows you to trim the 115 mm nominal stroke back by up to 100 mm, giving a usable travel window of 15-115 mm. The adjuster acts as a mechanical stop to set the end position and does not lock the load without live air.
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