Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30S 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 SAIJ63AX155-30S
The AirTAC SAIJ63X155-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 155 mm travel to a precise 125-155 mm window. This on-machine fine-tuning eliminates the need to swap hardware during product changeovers. It delivers a robust 2182 N push force at 0.7 MPa, making it suitable for mid-range automation tasks. The extruded aluminum barrel features sensor grooves on both sides for direct mounting of position switches.
This SKU ships configured with a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance, PT tapered port threads, and an integrated magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The 20 mm diameter rod and M16x1.5 thread provide high rigidity, though long unsupported strokes still require an external guide. The SAIJ mounting set omits FB, CA, CB, and CR brackets, offering Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30S |
|---|---|
| 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 SAIJ63AX155-30S
| 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 SAIJ63AX155-30S Is Used
Variable End-Stop Positioning
Dial in the exact 125 to 155 mm retract position during machine commissioning to accommodate multiple product sizes without physically changing the cylinder.
Corrosion-Resistant Actuation
Leverage the SUS420J2 stainless steel rod for mid-force tooling tasks in environments where standard carbon steel rods face moisture or mild chemical exposure.
Automated Product Changeover
Quickly reconfigure the effective stroke by up to 30 mm on packaging lines when switching between different package lengths, minimizing downtime.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-30S the Right Cylinder?
Select this 63 mm bore when an application requires 2182 N of push force at 0.7 MPa but demands variable end-stops for setup flexibility. If your process needs less force, stepping down to a 50 mm bore yields 1374 N push at 0.7 MPa; if you need more clamping power, stepping up to an 80 mm bore provides 3518 N. Choose this adjustable-stroke SAIJ over a fixed SAI when you need to trim the retract position at commissioning without adding external stops. The rear adjuster acts purely as a travel stop and cannot hold the load without live air pressure. For dead-load holding, select the SAIL (air-released lock) or BSAI (clamp-lock) variants. This cylinder is dimensionally interchangeable per ISO 15552 mounting-interface dimensions, uses PT ports, includes a magnet for CMSE/DMSE sensors, and features the SUS420J2 rod material.
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 SAIJ63AX155-30S FAQ
The rear adjuster screw acts as an external mechanical stop that lets you shorten the effective stroke by up to 30 mm. This provides a usable travel window of 125 to 155 mm, allowing precise end-position tuning at commissioning without swapping the cylinder.
At a 0.7 MPa operating pressure, the SAIJ63X155-30-S generates 2182 N of push force and 1402 N of pull force. It can deliver up to 2805 N push force at its maximum 1.0 MPa pressure rating.
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