Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 175mm 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
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50
The AirTAC SAIJ63X175-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to shorten the effective travel by up to 50 mm. This creates a highly flexible usable stroke window of 125 to 175 mm, letting you dial in the exact end position during commissioning without swapping out the cylinder or adding external stops. In the 63 mm bore class, it delivers a robust 2182 N of push force at 0.7 MPa and 1402 N of pull force.
This variant is built with an SUS420J2 stainless steel rod for superior corrosion resistance and uses PT tapered port threads for a tight, reliable seal. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to easily mount CMSE reed or DMSE solid-state switches if position feedback is later required. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 175 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 SAIJ63AX175-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×175 | 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 SAIJ63AX175-50 Is Used
Machine Changeovers
Rapidly adjust the retract stop by up to 50 mm to accommodate different product lengths on the same fixture without disassembling the pneumatic setup.
End-Position Tuning
Fine-tune the final resting position during initial commissioning to perfectly time a pressing or gripping operation within the 125 to 175 mm travel window.
Variable Diverter Stops
Set precise physical end-stops for product diverters on a conveyor line, allowing quick physical recalibration when package dimensions change.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX175-50 the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your application requires a 125 to 175 mm travel window and roughly 2182 N of thrust at 0.7 MPa. If your process needs less force, stepping down to a 50 mm bore yields 1374 N of push force; if you need significantly more clamping power, moving up to an 80 mm bore provides 3518 N. An adjustable stroke is ideal for product-size changeovers on a line, whereas a fixed-stroke SAI cylinder is better suited for dedicated, single-purpose stations.
Because the nominal stroke is 175 mm, side loads are minimal, but you should still ensure the load is properly guided to prevent rod binding. Remember that the rear adjuster and the variable air cushions only decelerate the piston at the end of travel; they do not function as a locking mechanism. For true load-holding without continuous air pressure, select a SAIL or BSAI series cylinder instead. This SAIJ model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ63AX175-50 FAQ
At a standard operating pressure of 0.7 MPa, this 63 mm bore cylinder generates 2182 N of push force and 1402 N of pull force. It can deliver up to 2805 N of push force at its maximum rated pressure of 0.9 MPa.
The rear adjusting screw acts as a mechanical stop that lets you shorten the nominal 175 mm stroke by up to 50 mm, resulting in a usable travel window of 125 to 175 mm. This stop only sets the end position and does not lock the load without live air pressure.
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