
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 35mm 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 SAIJ63X35-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 25 to 35 mm for precision end-position tuning. Delivering 1559 N of push force at 0.5 MPa, it handles robust actuation tasks while allowing up to 10 mm of stroke reduction without swapping the cylinder. The extruded aluminum barrel features sensor grooves on both sides, and this specific SKU includes a magnetic piston for position detection.
This variant is configured with an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads with a G3/8 connection. It supports AirTAC CMSE reed and DMSE electronic solid-state sensors. The rear adjuster acts purely as a mechanical stop to fine-tune the retract distance and does not hold the load without live air pressure.
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX35-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 35 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. |
| ×35 | 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 25 to 35 mm retract position during machine commissioning to perfect part seating without machining external spacers.
Quickly adjust the stroke by up to 10 mm on a packaging line when switching between different product heights, minimizing downtime.
Leverage the 1559 N push force at 0.5 MPa to secure heavy workpieces, using the fine stroke adjustment to prevent over-travel and workpiece damage.
Choose this 63 mm bore when you need higher force than a 50 mm cylinder (which provides 982 N push at 0.5 MPa) but want a more compact footprint than an 80 mm option (2513 N). The 10 mm adjustable stroke is ideal for applications requiring exact end-stop calibration during commissioning or product changeover, eliminating the need for external stops. For load-holding without continuous air pressure, consider an AirTAC SAIL or BSAI cylinder, as the SAIJ adjuster is a travel stop, not a lock.
To match this ISO 15552 interchangeable cylinder for a replacement, verify the 63 mm bore, 35 mm nominal stroke, 10 mm adjustment range, PT G3/8 port, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR brackets.
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 reach up to 2805 N push force at its maximum 0.9 MPa pressure.
The rear adjuster screw lets you mechanically shorten the nominal 35 mm stroke by up to 10 mm, creating a usable travel window of 25 to 35 mm. It functions as a physical stop to set the end position and does not lock the load without live air pressure.
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