Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-20 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 SAIJ63AX105-20
The AirTAC SAIJ63X105-20 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 105 mm stroke that can be fine-tuned backward by up to 20 mm, yielding a usable travel window of 85-105 mm. Operating at 0.15-1.0 MPa, it delivers a push force of 1559 N and a pull force of 1402 N at 0.5 MPa.
This variant features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance and uses PT tapered port threads with a G3/8 connection. The rear adjuster acts purely as a mechanical stop to set the end position during commissioning; it does not lock the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-20 |
|---|---|
| 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 SAIJ63AX105-20
| 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 SAIJ63AX105-20 Is Used
Commissioning Calibration
Dial in the exact retract distance within the 85-105 mm window during machine setup to perfectly align tooling without machining new spacers.
Product Changeover
Quickly adjust the rear stopper by a few millimeters on a packaging line when switching to a slightly different product size.
Variable End-Stop Machining
Fine-tune the clamping reach on a machining fixture where the raw material thickness varies slightly between batches.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX105-20 the Right Cylinder?
Choose this 63 mm bore cylinder when an application requires precise end-position tuning without swapping components or adding external stops. If your setup demands less force, stepping down to a 50 mm bore yields 982 N of push force at 0.5 MPa, while stepping up to an 80 mm bore provides 2513 N. Because this is a 105 mm stroke, side-load risks are minimal, but always guide the load properly on longer strokes.
To match this exact configuration for an ISO 15552 replacement, specify a 63 mm bore, 105 mm stroke, 20 mm adjustment range, PT G3/8 port, and SUS420J2 rod material. Note that SAIJ supports a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. Since no magnet is specified, position sensing via CMSE or DMSE switches is not enabled.
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 SAIJ63AX105-20 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder generates 1559 N of push force and 1402 N of pull force. At the maximum pressure of 1.0 MPa, it achieves a maximum push force of approximately 318 kgf.
The rear adjuster screw allows you to shorten the effective stroke from its 105 mm nominal length down to 85 mm. This provides a 20 mm tuning window to set the exact retract end position without needing to replace the cylinder or add external stops.
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