Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75S 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 SAIJ63AX165-75S
The AirTAC SAIJ63X165-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 165 mm stroke that can be dialed back by up to 75 mm, yielding a usable travel window of 90 to 165 mm. This wide adjustment band is ideal for commissioning machinery where exact end-of-stroke positioning must be fine-tuned without adding external stops. The bore delivers 1559 N of pull force at 0.5 MPa and 2182 N of push force at 0.7 MPa.
This model features a SUS420J2 stainless steel rod (option A) for superior corrosion resistance and a PT tapered port thread. The -S magnet enables position sensing with AirTAC CMSE reed and DMSE electronic solid-state switches. The extruded aluminum barrel includes sensor grooves on both sides. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75S |
|---|---|
| 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 SAIJ63AX165-75S
| 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 SAIJ63AX165-75S Is Used
Variable End-Stop Positioning
Dial in the exact 90 to 165 mm travel distance during machine commissioning to accommodate different product lengths without physically swapping cylinders.
Product Size Changeover
Quickly retract the rear stopper by up to 75 mm on packaging lines when switching to a smaller package format, minimizing downtime between production runs.
Sensor-Driven Clamping
Leverage the integrated -S magnet with DMSE solid-state sensors to confirm clamp positions while adjusting the stroke window on automated assembly fixtures.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75S the Right Cylinder?
Choose this 63 mm bore when your application requires moderate thrust and a highly variable end-stop. If you need less force, stepping down to a 50 mm bore yields 825 N of pull at 0.5 MPa; stepping up to an 80 mm bore provides 2268 N of pull. Select this adjustable-stroke version over a fixed SAI cylinder when your setup involves frequent product changeovers requiring different travel distances. The rear screw acts purely as a travel stop and does not hold the load without live air. For true load-holding without pressure, use an SAIL air-released lock, a BSAI clamp-lock, or an external pilot-operated check valve.
When replacing an ISO 15552 cylinder, match the 63 mm bore, 165 mm nominal stroke, 75 mm adjustment range, PT G3/8 port, and the -S magnet requirement. With a 165 mm stroke, the M16x1.5 rod thread handles standard loads, but long unsupported strokes still need an external guide to prevent side-load wear.
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 SAIJ63AX165-75S FAQ
The rear adjuster screw acts as a mechanical stop that shortens the effective travel. For this model, you can trim the 165 mm nominal stroke back by up to 75 mm, creating a usable travel window of 90 to 165 mm. The adjuster only sets the end position; it does not lock or hold the load without continuous air pressure.
At an operating pressure of 0.5 MPa, the SAIJ63X165-75-S provides 1559 N of pull force and 1402 N of push force. At 0.7 MPa, the push force increases to 2182 N. The maximum operating pressure is 1.0 MPa.
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