Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 275mm 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
- Stroke275 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-75S
The AirTAC SAIJ63X275-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the travel by up to 75 mm. This yields a highly flexible 200-275 mm usable stroke window, letting you set exact end positions at commissioning without adding external stops. It delivers a robust 1559 N pull force at 0.5 MPa, making it well-suited for moderate-to-heavy actuation tasks.
Built with a SUS420J2 stainless steel rod (option A) and PT tapered ports, this unit integrates dual-sided sensor grooves for position feedback. It supports AirTAC CMSE reed and DMSE solid-state switches via the included -S magnet. The mounting footprint is dimensionally interchangeable per ISO 15552, utilizing a reduced bracket set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 275 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 SAIJ63AX275-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×275 | 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 SAIJ63AX275-75S Is Used
Product Changeover Lines
Quickly fine-tune the retract end-position by up to 75 mm when switching between different package lengths on a packaging conveyor.
Machine Setup Calibration
Dial in the exact 200-275 mm travel window during commissioning to perfect pressing or pushing forces without machining custom spacers.
Variable End-Stop Forming
Adjust the stroke rearward to accommodate varying material thicknesses in light assembly and forming stations.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-75S the Right Cylinder?
Choose this 63 mm bore when your application requires more force than a 50 mm cylinder (which provides 825 N pull at 0.5 MPa) but does not warrant the bulk of an 80 mm unit. The 75 mm adjustment range is ideal for production lines running multiple product sizes, as the rear stopper screw allows rapid end-position changes without physically swapping the cylinder. For a fixed travel requirement without the adjuster, the standard SAI series is a simpler alternative.
When ordering, confirm the 63 mm bore, 275 mm nominal stroke, 75 mm adjustment range, PT port threads, and the -S magnet option. Because the nominal stroke is 275 mm, ensure adequate guiding for the load to prevent excessive side-loading on the M16x1.5 rod thread. Note that the rear adjuster functions only as a travel stop and does not hold the load without live air; for true fail-safe load holding, consider the SAIL or BSAI series.
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 SAIJ63AX275-75S FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. It operates at speeds between 30 and 800 mm/s.
A rear-mounted adjusting screw acts as a mechanical stopper, allowing you to shorten the effective travel from the nominal 275 mm down to 200 mm. This stopper only sets the end position; it does not lock or hold the load without continuous air pressure.
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