Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 290mm 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.
- BoreØ63 mm
- Stroke290 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-40S
The AirTAC SAIJ63X290-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel. With a nominal 290 mm stroke and a 40 mm adjustment range, you gain a usable travel window of 250 to 290 mm. This bore size delivers 1559 N of push force at 0.5 MPa and 2182 N at 0.7 MPa, making it well-suited for medium-duty positioning tasks.
This SKU ships with an SUS420J2 stainless steel rod (option A) for improved corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel features sensor grooves on both sides, and the unit uses PT tapered port threads (G3/8). The rear adjuster acts purely as a mechanical stop to set the retract end-position and cannot hold a load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 290 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.
Theoretical Output Force (Ø63mm)
| 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.
Model Code: Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×290 | 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.
Where the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-40S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 250 and 290 mm during commissioning to accommodate different material lengths without adding external stopper blocks.
Product Changeover Systems
Quickly adjust the stroke end-position on packaging or sorting lines when switching product sizes, reducing machine downtime significantly.
Medium-Force Machine Setup
Leverage 1559 N of push force at 0.5 MPa to securely push fixtures into place, fine-tuning the final resting position via the rear screw.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-40S the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your machine setup requires variable end-stops or frequent product changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder. If you need less force, stepping down to a 50 mm bore yields 982 N at 0.5 MPa; stepping up to an 80 mm bore provides 2513 N. Because the 290 mm stroke places significant leverage on the 20 mm rod and M16x1.5 thread, an external guide rail is recommended to prevent side-load wear. For load-holding without continuous air pressure, use an external rod lock or pilot-operated check valve, as the SAIJ rear stopper and air cushions only decelerate travel. This model is dimensionally interchangeable per ISO 15552 and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX290-40S FAQ
The rear adjuster screw allows you to shorten the effective travel by up to 40 mm. This creates a usable stroke window of 250 to 290 mm, letting you fine-tune the end position at commissioning without replacing the cylinder.
At an operating pressure of 0.5 MPa, it provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
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Covers non-human-caused product damage.
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