Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 135mm 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
- Stroke135 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-40
The AirTAC SAIJ63X135-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to a 95-135 mm window. Delivering a push force of 2182 N at 0.7 MPa, it provides robust actuation for mid-range tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
This variant is configured with a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and PT tapered ports. The M16x1.5 rod thread and 20 mm rod diameter provide high structural rigidity, handling side loads well, though long unsupported strokes still require external guides. The rear adjuster acts purely as a mechanical stop to set the end position and does not hold the load without live air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 135 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 SAIJ63AX135-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×135 | 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 SAIJ63AX135-40 Is Used
Machine Changeover
Dial in the exact 95 to 135 mm end-stop during product size changes on a packaging line without adding external mechanical stops.
Commissioning Calibration
Fine-tune the retract position during initial machine setup to absorb mechanical tolerances and achieve precise sensor triggering.
Variable End Positioning
Adjust the travel window on the fly for assembly stations that need to accommodate slightly different part lengths.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX135-40 the Right Cylinder?
Choose this adjustable-stroke model when your application requires precise end-position tuning at commissioning or during product changeover without swapping out the entire cylinder. If your setup needs less force, stepping down to a 50 mm bore yields 1374 N at 0.7 MPa; if more thrust is required, an 80 mm bore provides 3518 N.
For load-holding applications without continuous air pressure, note that the rear adjuster is a travel stop, not a lock—consider the SAIL or BSAI series instead. This SAIJ model ensures ISO 15552 mounting interchangeability with a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets.
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 SAIJ63AX135-40 FAQ
At an operating pressure of 0.7 MPa, this 63 mm bore cylinder generates a push force of 2182 N and a pull force of 1402 N. At 0.5 MPa, the push force is 1559 N.
The rear adjusting screw allows you to mechanically shorten the nominal 135 mm stroke by up to 40 mm, providing an adjustable travel window of 95 to 135 mm. This stopper sets the end position but does not lock the load without live air pressure.
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