Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-100
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-100
The AirTAC SAIJ63X155-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to dial back the retract end-position by up to 100 mm. This creates a highly flexible usable travel window of 55 to 155 mm, letting you fine-tune machine stops during commissioning or product changeovers without physically swapping the actuator. Delivering 1559 N of push force at 0.5 MPa, it handles solid mid-range automation tasks with precision.
This SKU is configured with a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and features a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides for straightforward mounting of CMSE reed or DMSE electronic switches. Remember that the rear adjuster functions strictly as a travel stop to set deceleration and end-limits, not as a lock to hold a load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-100 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 155 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 SAIJ63AX155-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×155 | 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 SAIJ63AX155-100 Is Used
Variable End-Stop Positioning
Dial in the retract stroke anywhere from 55 to 155 mm to accommodate varying material lengths or tooling depths without changing the cylinder.
Machine Changeover
Rapidly reconfigure assembly line end-positions during product family transitions by turning the rear adjuster screw rather than swapping actuators.
Mid-Force Automation
Leverage the 1559 N of thrust at 0.5 MPa for clamping, pressing, or lifting tasks where the exact end-position needs on-site fine-tuning.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-100 the Right Cylinder?
Choose this 63 mm bore when your application requires around 1559 N of push force at 0.5 MPa (or 2182 N at 0.7 MPa). If you need less force, step down to the 50 mm bore which yields 982 N at 0.5 MPa; for heavier loads, the 80 mm bore provides 2513 N. The massive 100 mm adjustment range is ideal for machines processing variable product sizes, replacing the need to maintain a large inventory of fixed-stroke SAI cylinders for different travel lengths.
Because the nominal stroke is 155 mm, side-loading is less severe than on longer strokes, but you should still guide the load externally to prevent rod binding. This SAIJ model uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. For any application requiring true load-holding without continuous air pressure, select a SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock instead of relying on the adjuster.
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 SAIJ63AX155-100 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. If you increase the pressure to 0.7 MPa, it provides 2182 N of push force.
The rear adjuster acts as an external stopper that shortens the effective stroke. For this model, it provides an adjustable travel window of 55 to 155 mm, allowing you to set the exact retract end-position during commissioning without adding external stops.
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