Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 185mm 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
- Stroke185 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-40S
The AirTAC SAIJ63X185-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 185 mm stroke that can be fine-tuned backward by up to 40 mm, creating a precise 145-185 mm usable travel window. Delivering 2182 N of push force at 0.7 MPa, it is built with a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance.
This model includes a magnetic piston (-S) for position detection and uses PT tapered ports sized G3/8. The extruded aluminum barrel features sensor grooves on both sides, accepting AirTAC CMSE reed and DMSE electronic solid-state switches. The rear stopper allows you to dial in the retract end 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.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 185 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 SAIJ63AX185-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×185 | 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 SAIJ63AX185-40S Is Used
Product Changeover
Dial in the 145-185 mm travel window during format size changes on packaging lines, using the rear screw to set new end positions without replacing hardware.
End-Stop Calibration
Fine-tune the retract position during machine commissioning to prevent mechanical crashes, relying on the 40 mm adjustment range for exact positioning.
Assembly Pressing
Apply 2182 N of thrust at 0.7 MPa for pressing tasks, using the adjustable stopper to accommodate varying part heights on the fly.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-40S the Right Cylinder?
Choose this 63 mm bore when an application requires roughly 2182 N push force at 0.7 MPa; step down to a 50 mm bore (1374 N push at 0.7 MPa) for lighter loads, or up to an 80 mm bore (3518 N push at 0.7 MPa) for heavier demands. The adjustable 145-185 mm travel window is ideal for product changeovers on a line, letting you reposition the end stop in minutes rather than swapping the entire cylinder for a fixed-stroke SAI unit.
For a direct ISO 15552 replacement match, verify the 63 mm bore, 185 mm nominal stroke, 40 mm adjustment range, PT G3/8 port thread, and the -S magnet requirement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is under 300 mm, side-load stress is moderate, but the 20 mm rod diameter still requires external guiding for heavy lateral loads. Note that neither the rear adjuster nor the air cushions function as a lock; for load-holding without live air, consider an external rod lock, SAIL, or BSAI cylinder.
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 SAIJ63AX185-40S FAQ
At 0.7 MPa operating pressure, this 63 mm bore cylinder provides 2182 N of push force and 1402 N of pull force. At 0.5 MPa, the push force is 1559 N.
The rear adjuster screw lets you shorten the 185 mm nominal stroke by up to 40 mm, providing a usable travel window of 145-185 mm. It acts as a mechanical stop to set the end position and does not lock the load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX185-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.