Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75 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 SAIJ63AX165-75
The AirTAC SAIJ63X165-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 165 mm travel by up to 75 mm. This creates a wide 90-165 mm usable stroke window, giving you exceptional flexibility for end-position tuning during commissioning or product changeovers without swapping the barrel or adding external stops. It delivers a robust 1559 N pull force at 0.5 MPa and 2182 N push at 0.7 MPa.
This variant features a SUS420J2 stainless steel rod (option A) for improved corrosion resistance over standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, and fluid is supplied via a PT tapered G3/8 port. The rear adjuster acts purely as a mechanical stop to set the travel end; it does not lock or hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75 |
|---|---|
| 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 SAIJ63AX165-75
| 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 SAIJ63AX165-75 Is Used
Machine Changeovers
Dial in the 90-165 mm travel window on the fly to accommodate different product lengths during line changeovers.
End-Position Tuning
Fine-tune the exact retract position at commissioning without machining new external stopper blocks.
Variable Assembly Stops
Adjust the stroke dynamically for multi-model assembly lines requiring different clamping depths.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-75 the Right Cylinder?
Choose this 63 mm bore when your application requires around 1559 N of pull force at 0.5 MPa, stepping up from a 50 mm bore that provides 825 N pull, or down from an 80 mm bore that yields 2268 N pull. The 75 mm adjustment range is ideal for machines processing variable product sizes, replacing fixed-stroke SAI cylinders when you need a variable end-stop rather than a rigid travel length. Because the rear adjuster only halts forward movement, load-holding without live air requires a SAIL or BSAI lock variant. For ISO 15552 replacements, match the 63 mm bore, 165 mm stroke, 75 mm adjuster, PT G3/8 port, and the Basic, FA, LB, TC, FTC, TCM1, TCM2 mounting set.
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 SAIJ63AX165-75 FAQ
The rear adjuster screw lets you mechanically shorten the 165 mm nominal stroke by up to 75 mm, providing an adjustable 90-165 mm travel window. It functions as a hard stop to set the end position and does not lock the load without continuous air pressure.
At 0.5 MPa, it provides 1559 N of pull force and 1402 N of push force. At 0.7 MPa, the push force increases to 2182 N, making it suitable for medium-duty clamping and positioning tasks.
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