Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40S
The AirTAC SAIJ63X155-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 155 mm travel by up to 40 mm for a precise 115-155 mm usable window. It delivers a robust 2182 N push force at 0.7 MPa and operates at speeds between 30-800 mm/s. The integrated magnet (-S) enables direct position sensing using AirTAC CMSE reed and DMSE solid-state switches housed in the dual-side sensor grooves.
Built for demanding environments, this variant features an SUS420J2 stainless steel rod (code A) for superior corrosion resistance and a PT tapered port thread. The extruded aluminum barrel maintains a true ISO 15552 mounting interface, dimensionally interchangeable with comparable profile cylinders. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning without adding external stops; it does not hold the load without live air.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 155 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 SAIJ63AX155-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×155 | 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 SAIJ63AX155-40S Is Used
Machine Changeover
Quickly adapt the retract end-stop from 115 to 155 mm when switching between product sizes on a packaging line, eliminating the need to physically swap cylinders.
End-Position Tuning
Fine-tune the exact bottom-dead-center position during machine commissioning to perfectly time a pressing or clamping operation without external stopper blocks.
Sensor-Driven Feedback
Leverage the integrated magnet and dual sensor grooves to mount CMSE or DMSE switches, confirming the adjusted travel end has been reached for process validation.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX155-40S the Right Cylinder?
Choose this 63 mm bore when your application requires the 2182 N push force at 0.7 MPa, bridging the gap between the 50 mm bore (1374 N) and the larger 80 mm bore (3518 N). The 40 mm adjustment window is ideal for product changeovers or dialing in exact end positions on the fly, a major advantage over a fixed-stroke SAI cylinder. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is under 300 mm, side-load risks are lower, but an external guide is still recommended for heavy lateral loads. Note that neither the rear stopper nor the air cushions function as a lock; for true load-holding without live air pressure, consider the SAIL or BSAI series.
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 SAIJ63AX155-40S FAQ
At a 0.7 MPa operating pressure, this 63 mm bore cylinder generates 2182 N of push force and 1402 N of pull force. It can reach a maximum push force of 2805 N at 0.9 MPa.
The rear adjuster screw lets you mechanically shorten the 155 mm nominal stroke by up to 40 mm, creating a usable travel window of 115 to 155 mm. It functions as a hard stop to set the end position and does not lock or hold the load without continuous air pressure.
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