Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 180mm 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
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75
The AirTAC SAIJ63X180-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to trim the effective travel back by up to 75 mm. This creates a highly flexible usable-travel window between 105 and 180 mm, letting you dial in exact end positions during commissioning without swapping out the barrel or adding bulky external stops. Equipped with a G3/8 port and a 20 mm piston rod, it delivers a robust 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it well suited for moderate to heavy actuation tasks.
This specific configuration utilizes a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic solid-state switches, though this particular SKU is specified without a magnet. The rear adjuster acts purely as a mechanical stop to set the retract position, working in tandem with the built-in variable air cushions to decelerate the load at the end of travel.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 180 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 SAIJ63AX180-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×180 | 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 SAIJ63AX180-75 Is Used
Machine Setup & Changeover
Dial in the exact retract position within the 105-180 mm window during commissioning or product size changes, eliminating the need to physically swap cylinders on the line.
Variable End-Stop Positioning
Use the 75 mm rear adjuster to fine-tune the stroke end-point for multi-format packaging or machining operations without adding external mechanical stops.
Corrosive-Resistant Actuation
Leverage the SUS420J2 stainless steel rod to reliably drive tooling or clamps in environments where moisture or light coolant splash would damage standard carbon steel rods.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX180-75 the Right Cylinder?
Choose this 63 mm bore adjustable-stroke unit when your application requires on-the-fly end-position tuning or frequent product changeovers, stepping up from a 50 mm bore that provides 982 N push force at 0.5 MPa. The 75 mm adjustment range is particularly valuable for prototyping or accommodating multiple product sizes on a single conveyor line. For load-holding requirements without live air pressure, note that neither the rear adjuster nor the air cushions function as a lock; you should instead specify an AirTAC SAIL or BSAI cylinder.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 180 mm nominal stroke, 75 mm adjustment range, PT tapered port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because this model omits the FB, CA, CB, and CR mounts, verify your existing bracket compatibility. The 20 mm rod and M16x1.5 thread provide excellent side-load capacity, but for any stroke at or above 300 mm, always use an external guide to prevent rod deflection.
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 SAIJ63AX180-75 FAQ
The rear adjuster is a mechanical stop that allows you to shorten the nominal 180 mm stroke by up to 75 mm, providing a usable travel window of 105 to 180 mm. It sets the retract end position and must be used with live air pressure, as it does not lock the load.
At 0.5 MPa operating pressure, the SAIJ63X180-75 provides 1559 N of push force and 1402 N of pull force. It can deliver up to 2182 N of push force at 0.7 MPa.
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