Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 135mm 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
- Stroke135 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30S
The AirTAC SAIJ63X135-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 105 to 135 mm. Delivering 1559 N of push force at 0.5 MPa, it handles robust actuation tasks while allowing precise end-position tuning without swapping out the unit. The extruded aluminum barrel features sensor grooves on both sides, and the integrated magnet (-S) supports position detection.
This specific SKU features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and utilizes PT tapered port threads with a G3/8 connection. The rear stopper lets you dial in the exact retract distance during commissioning, acting purely as a travel limit rather than a load lock. For applications requiring the cylinder to hold a load without live air pressure, an external rod lock or a related SAIL pneumatic lock cylinder is required.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 135 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 SAIJ63AX135-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×135 | 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 SAIJ63AX135-30S Is Used
Machine Changeover
Quickly adjust the retract distance by up to 30 mm when switching between product sizes on a packaging line, avoiding the need to physically swap cylinders.
End-Position Tuning
Fine-tune the exact end-of-stroke position during machine commissioning to perfectly time part ejection or clamping without adding external spacers.
Robust Actuation
Leverage the 1559 N push force and SUS420J2 stainless steel rod for reliable performance in industrial environments requiring precise physical stops.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-30S the Right Cylinder?
Select this 63 mm bore cylinder when your application requires 1559 N of push force at 0.5 MPa but demands variable end-stops for product changeovers. If your setup requires less force, stepping down to a 50 mm bore yields 982 N; stepping up to an 80 mm bore provides 2513 N. The adjustable 105-135 mm travel window is ideal for fine-tuning machinery at commissioning without fabricating external mechanical stops.
Because this is a 135 mm stroke unit, side-load risks are moderate, but ensuring proper external guiding will maximize seal life. To guarantee an exact ISO 15552 replacement match, verify the 63 mm bore, 135 mm nominal stroke, 30 mm adjustment range, PT G3/8 port, and the -S magnet requirement. Note that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ63AX135-30S FAQ
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke by up to 30 mm, providing an adjustable travel window of 105 to 135 mm. It only sets the travel end and does not lock or hold the load without continuous air pressure.
At a standard operating pressure of 0.5 MPa, the SAIJ63X135-30-S provides 1559 N of push force and 1402 N of pull force. It operates at speeds between 30 and 800 mm/s.
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