Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-100 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 SAIJ63AX275-100
The AirTAC SAIJ63X275-100 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 275 mm stroke that can be dialed back by up to 100 mm, creating a highly versatile 175-275 mm usable travel window for precise end-position tuning. Delivering 1559 N of pull force at 0.5 MPa, it handles demanding actuation tasks with ease.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads with a G3/8 connection. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. Note that the rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-100 |
|---|---|
| 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 SAIJ63AX275-100
| 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 SAIJ63AX275-100 Is Used
Product Changeovers
Quickly adapt the retract stroke between 175 and 275 mm on packaging lines handling varying container sizes without changing hardware.
Machine Setup
Fine-tune the end-of-stroke position during commissioning to perfectly align tooling, avoiding the need for external stopper blocks.
Variable End Stops
Ideal for assembly stations where the rear stopper screw is adjusted on the fly to accommodate different part lengths.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX275-100 the Right Cylinder?
Choose this 63 mm bore when a 50 mm cylinder (offering 825 N pull at 0.5 MPa) lacks the necessary force, but an 80 mm bore (2268 N pull) would be excessive. The generous 100 mm adjustment range is ideal for product changeovers, allowing you to fine-tune the retract position at commissioning without swapping the cylinder or adding external stops. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead of relying on the adjuster.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 275 mm stroke, G3/8 PT ports, and the required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Because the 275 mm stroke is relatively long, ensure adequate external guiding to prevent excessive side-loading on the SUS420J2 rod. This model operates without a magnet; add an -S suffix if CMSE or DMSE sensors are required.
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 SAIJ63AX275-100 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N at 0.7 MPa. The maximum thrust is 318 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 100 mm, providing a usable travel window of 175 to 275 mm. It functions as a mechanical stop for end-position tuning and is not a locking device.
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