
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX100-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 100mm 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 SAIJ63X100-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 80 to 100 mm for precise end-position tuning. It delivers 1559 N of push force at 0.5 MPa and features a G3/8 port paired with a 20 mm piston rod. The integrated magnet supports CMSE reed and DMSE electronic sensors for exact position feedback.
This model utilizes an SUS420J2 stainless steel rod for enhanced corrosion resistance and includes adjustable air cushions at both ends to manage impact. The rear stopper allows you to dial in the retract position during commissioning without adding external stops, though it acts only as a travel stop and does not hold the load without live air pressure.
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX100-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 100 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. |
| ×100 | 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 80 to 100 mm travel window during product size changes without physically swapping the cylinder or adding external stopper blocks.
Fine-tune the retract end position at machine commissioning to absorb mechanical tolerance stacks and achieve exact clamping or positioning.
Leverage the integrated magnet with DMSE solid-state sensors to confirm the adjusted end-of-stroke in automated assembly processes.
Choose this 63 mm bore when an application requires around 1559 N of thrust at 0.5 MPa, stepping up from a 50 mm bore that provides 982 N, or down from an 80 mm bore yielding 2513 N. The adjustable 80 to 100 mm window is ideal for product changeovers on a line where the exact end-of-stroke varies slightly. For load-holding without continuous air pressure, consider the SAIL or BSAI series, as this adjuster is strictly a stop. To match this ISO 15552 replacement, specify the 100 mm stroke, 20 mm adjustment, PT tapered G3/8 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and the -S magnet.
Quick checklist
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. It can deliver up to 2182 N push force at 0.7 MPa.
The rear adjuster screw lets you shorten the nominal 100 mm stroke by up to 20 mm, creating an adjustable 80 to 100 mm travel window. It functions as a mechanical stop for end-position tuning and does not lock or hold the load without air pressure.
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