Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 165mm 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
- Stroke165 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40
The AirTAC SAIJ63X165-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from 165 mm to a 125 mm minimum. Operating at 0.5 MPa, this 63 mm bore generates 1559 N of pull force and 2182 N of push force at 0.7 MPa, making it well-suited for moderate-duty positioning tasks.
This variant features a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and utilizes PT tapered port threads with a G3/8 connection. The extruded aluminum barrel includes sensor grooves on both sides, allowing for the straightforward mounting of CMSE reed or DMSE electronic solid-state switches if position feedback is later required.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 165 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 SAIJ63AX165-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×165 | 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 SAIJ63AX165-40 Is Used
Machine Changeover
Quickly shift the end-stop from 165 mm down to 125 mm when adapting machinery to run a slightly shorter product size.
Commissioning Calibration
Fine-tune the retract position during initial setup to achieve precise mechanical alignment without external spacers.
Variable End Stops
Provide a flexible travel window for assembly stations that occasionally require slightly different stroke endings.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-40 the Right Cylinder?
Selecting this adjustable model over a fixed-stroke SAI cylinder is ideal when you need to dial in a precise end-of-stroke position during commissioning or product changeovers without physically swapping the cylinder or adding external stops. The rear adjuster acts purely as a mechanical stop; it does not lock or hold the load without live air pressure. If your application requires true fail-safe load holding, consider an AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder instead.
Because the 165 mm stroke is relatively short for the 63 mm bore, the 20 mm rod diameter and M16x1.5 thread handle side loads well without requiring an external guide. When replacing an ISO 15552 cylinder, match the 63 mm bore, 165 mm stroke, 40 mm adjustment range, PT G3/8 port, and standard mounting options (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ63AX165-40 FAQ
The rear adjuster screw allows you to shorten the nominal 165 mm stroke by up to 40 mm, providing an effective travel window of 125 to 165 mm. This stopper sets the end position but does not lock or hold the load without continuous air pressure.
At 0.5 MPa operating pressure, the SAIJ63X165-40 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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