Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20 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 SAIJ63AX165-20
The AirTAC SAIJ63X165-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 145 to 165 mm, allowing you to dial back the nominal 165 mm stroke by up to 20 mm during commissioning. Operating at 0.7 MPa, it delivers 2182 N of push force and 1402 N of pull force, making it a robust choice for mid-range pneumatic tasks.
This variant features an SUS420J2 stainless steel piston rod (option A) for improved corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is specified without a magnet, meaning position sensing via AirTAC CMSE or DMSE switches is not enabled out of the box. The rear adjustment screw functions purely as a travel stop to set end positions and does not lock the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20 |
|---|---|
| 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 SAIJ63AX165-20
| 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 SAIJ63AX165-20 Is Used
Machine Changeover
Dial in the 145 to 165 mm travel window during product size transitions without physically replacing the cylinder or bolting on external stoppers.
End-Position Tuning
Fine-tune the retract end position to precise tolerances during commissioning using the integrated rear adjusting screw.
Assembly Conveyors
Provide reliable push force using the 2182 N at 0.7 MPa output for mid-range assembly and positioning tasks on the line.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX165-20 the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your machine setup requires precise end-position tuning without adding external stops or swapping out a fixed-stroke SAI cylinder. If your application needs less force, stepping down to a 50 mm bore yields 1374 N of push force at 0.7 MPa. For higher force requirements, moving up to an 80 mm bore provides 3518 N.
The PT tapered port is G3/8, and the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments, omitting FB, CA, CB, and CR options. Because the rear adjuster and the variable air cushions only decelerate the travel end, this cylinder will not hold a load without continuous air pressure; for true load-holding, consider the SAIL or BSAI series. At 165 mm, the 20 mm rod thread handles standard side loads, but longer unsupported strokes require an external guide.
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 SAIJ63AX165-20 FAQ
At an operating pressure of 0.7 MPa, the SAIJ63X165-20 cylinder delivers a push force of 2182 N and a pull force of 1402 N. It can reach a maximum push force of 2805 N at 0.9 MPa.
The rear adjuster allows you to shorten the effective stroke by up to 20 mm, creating a usable travel window of 145 to 165 mm. This stopper sets the travel end and decelerates the load, but it does not lock the load without live air pressure.
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