Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 260mm 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
- Stroke260 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20
The AirTAC SAIJ63X260-20 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa, making it a robust choice for medium-duty automation. The integrated rear stopper allows you to trim the effective travel, providing a usable window of 240-260 mm for precise end-position calibration.
This unit features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and carries a G3/8 PT tapered port. It retains the standard extruded aluminum barrel with sensor grooves on both sides. While it lacks a factory magnet, the housing fully supports adding CMSE reed or DMSE electronic sensors if position detection becomes necessary later.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 260 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 SAIJ63AX260-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×260 | 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 SAIJ63AX260-20 Is Used
Machine Changeover
Dial in the 240-260 mm travel window during product size transitions to set exact retract positions without changing hardware.
Actuator Setup
Use the rear stopper to fine-tune the end-of-stroke deceleration point at commissioning, preventing harsh impacts on tooling.
Assembly Line Timing
Synchronize multiple 63 mm bore actuators delivering 1559 N of force by individually trimming each stroke by up to 20 mm.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX260-20 the Right Cylinder?
Choose this 63 mm bore when a 50 mm cylinder (offering 982 N push at 0.5 MPa) lacks the necessary thrust, but an 80 mm bore (2513 N) would be physically oversized. The 20 mm adjustment range is ideal for fine-tuning the retract end during machine setup or product changeover, eliminating the need to swap cylinders or bolt on external stops. For any required load-holding without live air pressure, note that this rear adjuster acts only as a travel stop and not a brake; you would need to specify a SAIL or BSAI cylinder instead.
Because the 260 mm stroke creates an extended lever arm, ensure external guiding is used to prevent excessive side-loading on the SUS420J2 rod. When matching this cylinder for an ISO 15552 interchange, verify the 63 mm bore, 260 mm stroke, 20 mm adjust, G3/8 PT port, and your required mounting style. The SAIJ series supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR options.
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 SAIJ63AX260-20 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. It operates at a speed range of 30-800 mm/s.
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 260 mm stroke by up to 20 mm, creating a usable travel window of 240-260 mm. It only sets the travel end and does not lock or hold the load without continuous air pressure.
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