Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 105mm 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
- Stroke105 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50
The AirTAC SAIJ63X105-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 1559 N of push force at 0.5 MPa. It features a SUS420J2 stainless steel rod and PT tapered ports. The integrated adjustment screw allows you to dial back the nominal 105 mm stroke by up to 50 mm, creating a precise 55-105 mm usable travel window for fine-tuning end positions during commissioning.
This adjustable stopper eliminates the need to swap cylinders or bolt on external stops when product sizes change. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE or DMSE switches if a magnet is added later. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 105 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 SAIJ63AX105-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×105 | 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 SAIJ63AX105-50 Is Used
Product Changeovers
Rapidly dial in the 55-105 mm stroke window during format changeovers without swapping out the entire actuator assembly.
End-Position Tuning
Fine-tune the retract end position at machine commissioning to achieve exact seating without adding external mechanical stops.
Variable Stops
Handle multiple part sizes on a single line by adjusting the travel limit in the field to accommodate varying workpiece dimensions.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-50 the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore provides insufficient thrust (982 N push at 0.5 MPa) but an 80 mm bore is oversized (2513 N push at 0.5 MPa). The 50 mm adjustment range is ideal for machines running multiple product sizes, allowing operators to set variable end-stops on the fly instead of repositioning fixed stops. For a direct ISO 15552 replacement, match the 63 mm bore, 105 mm stroke, 50 mm adjustment, PT ports, and your required mounting kit.
Remember that the rear adjuster functions strictly as a travel stop, not a locking device. It cannot hold a load without continuous live air pressure. If your application requires true load-holding, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external pilot-operated check valve.
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 SAIJ63AX105-50 FAQ
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back by up to 50 mm. This creates a usable stroke window of 55 to 105 mm, allowing you to set the exact retract position without changing the cylinder.
At 0.5 MPa operating pressure, it provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
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