Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 115mm 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
- Stroke115 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40
The AirTAC SAIJ63X115-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 115 mm stroke by up to 40 mm. This yields a usable travel window of 75-115 mm, allowing precise end-position tuning at commissioning without swapping out the unit or adding external stops. It features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and operates with a PT tapered port thread.
Delivering 1559 N of push force and 1402 N of pull force at 0.5 MPa, this 63 mm bore cylinder handles robust actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. The rear adjuster acts purely as a travel stop to set the retraction end-point and relies on the integrated air cushion for deceleration; it does not lock or hold the load without continuous air pressure.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 115 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 SAIJ63AX115-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×115 | 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 SAIJ63AX115-40 Is Used
Machine Changeover
Dial in the exact retraction end-stop between 75 and 115 mm when switching product sizes on a packaging line, avoiding the need to physically swap cylinders.
Commissioning Calibration
Fine-tune the tooling position during initial setup to dial out mechanical tolerance stacks, ensuring the 1559 N push force hits the exact target depth.
Variable End-Stop Actuation
Handle multi-format clamping tasks on a single fixture by adjusting the rear stopper screw, accommodating different workpiece heights without external stops.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX115-40 the Right Cylinder?
Select this 63 mm bore cylinder when your application requires 1559 N of push force at 0.5 MPa but demands variable end-stop positioning within a 75-115 mm window. If your setup requires less force, stepping down to a 50 mm bore provides 982 N of push force; conversely, an 80 mm bore yields 2513 N for heavier loads. The adjustable stroke is ideal for product-size changeovers on a line, whereas a fixed-stroke SAI is sufficient for repetitive single-depth tasks.
Because this model lacks a magnet (-S), it cannot host CMSE or DMSE sensors without modification. To replace this cylinder with another ISO 15552 component, match the 63 mm bore, 115 mm stroke, 40 mm adjustment range, G3/8 port size, PT thread, and the SUS420J2 rod material. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. For any load-holding requirements without live air pressure, utilize a SAIL air-released lock or an external rod lock, as the rear adjuster here is strictly a stop.
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 SAIJ63AX115-40 FAQ
At 0.5 MPa operating pressure, this 63 mm bore cylinder provides 1559 N of push force and 1402 N of pull force. At 0.7 MPa, the push force increases to 2182 N.
The rear adjuster screw allows you to trim the effective stroke back by up to 40 mm from the nominal 115 mm. This creates a usable travel window of 75-115 mm, acting as a mechanical stop for the retracted position without locking the load.
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