
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX100-20 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 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 1559N push force at 0.5 MPa and allows you to dial back the nominal 100mm stroke by up to 20mm, yielding a precise 80-100mm usable travel window for commissioning without external stops.
Built with an extruded aluminum barrel and a SUS420J2 stainless steel rod, it handles side loads well. It uses PT tapered ports (G3/8) and supports AirTAC CMSE reed and DMSE solid-state sensors via dual-side grooves. The rear adjuster acts purely as a travel stop, so it will not hold a load without live air pressure.
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX100-20 |
|---|---|
| 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 exact retract distance from 80 to 100mm during machine commissioning to align tooling perfectly.
Quickly adjust the stroke stop on the line when switching to a new product size without changing the cylinder.
Set precise retraction limits for pressing or locating tasks that require a variable end-stop within a 20mm range.
Choose this 63mm bore when a 50mm bore falls short (delivering only 982N push at 0.5 MPa) but an 80mm bore is excessive. The adjustable 80-100mm travel window is perfect for product changeovers, letting you fine-tune the retract end-position on the fly instead of swapping a fixed-stroke SAI cylinder.
For load-holding without continuous air, skip this cylinder and use SAIL or BSAI variants. This model is dimensionally interchangeable with ISO 15552 cylinders. Confirm your exact mounting needs from the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, TCM2.
Quick checklist
It delivers a push force of 1559N and a pull force of 1402N at 0.5 MPa operating pressure.
A rear screw stopper lets you shorten the 100mm stroke by up to 20mm, creating an 80-100mm travel window. It acts as a mechanical stop, not a lock.
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