Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30 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 SAIJ63AX155-30
The AirTAC SAIJ63X155-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 125-155 mm usable travel window, allowing you to dial back the nominal 155 mm stroke by up to 30 mm during commissioning. Delivering 1559 N of pull force at 0.5 MPa, it handles robust actuation while maintaining a standard ISO 15552 mounting footprint.
This variant uses a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and features PT tapered port threads with a G3/8 air connection. The extruded aluminum barrel includes sensor grooves on both sides. Since no magnet is specified, position sensing requires adding the -S option to use reed CMSE or solid-state DMSE switches.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30 |
|---|---|
| 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 SAIJ63AX155-30
| 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 SAIJ63AX155-30 Is Used
End-Position Tuning
Dial in the exact retract distance within the 125-155 mm window during machine commissioning to perfect product seating without external stops.
Product Changeover
Quickly adjust the stroke by up to 30 mm on the rear screw to accommodate different product sizes running on the same line.
Assembly Pressing
Leverage the 1559 N pull force for pressing tasks while using the adjustable stop to prevent overtravel on delicate components.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30 the Right Cylinder?
Select this 63 mm bore cylinder when an application requires precise end-position tuning without swapping components, offering 1559 N pull force at 0.5 MPa. If your setup needs less force, the 50 mm bore provides 825 N pull; if more force is required, stepping up to the 80 mm bore yields 2268 N. The adjustable rear stopper is strictly a travel limit, not a locking device, so it cannot hold a load without live air pressure. For positive load-holding, consider an external pilot-operated check valve or the SAIL lock variant.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 155 mm nominal stroke, 30 mm adjustment range, G3/8 PT ports, and the SUS420J2 rod material. The SAIJ supports a reduced mounting set of 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 SAIJ63AX155-30 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of pull force and 2182 N of push force. At the maximum 1.0 MPa pressure, it delivers up to 318 kgf.
The rear adjuster acts as a mechanical stop that shortens the 155 mm nominal stroke by up to 30 mm, creating a 125-155 mm usable travel window. It only sets the end position and does not lock the load without continuous air pressure.
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