Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-30S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 400mm 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
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-30S
The AirTAC SAIJ63X400-30-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, giving you a usable travel window of 370-400 mm. It delivers 1559 N of pull force at 0.5 MPa and 2182 N of push force at 0.7 MPa. This variant includes a piston magnet for position sensing and uses a SUS420J2 stainless steel rod for enhanced corrosion resistance. The barrel is an extruded aluminum profile, not a tie-rod design.
A PT tapered G3/8 port supplies air, while adjustable air cushions at both ends manage end-of-stroke deceleration. The rear stopper lets you fine-tune the retract position during commissioning without adding external physical stops. It accepts AirTAC CMSE reed and DMSE solid-state sensors in the dual-side grooves.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-30S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 400 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 SAIJ63AX400-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×400 | 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 SAIJ63AX400-30S Is Used
Machine Changeover
Dial in the 30 mm retract window to switch product sizes on a packaging line without physically replacing the cylinder.
End-Stop Tuning
Fine-tune the final resting position during commissioning to align tooling perfectly, avoiding the need for custom spacer shims.
Variable Positioning
Set precise retract distances for multi-stage assembly processes using the integrated rear stopper mechanism.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-30S the Right Cylinder?
Choose this 63 mm bore when a 50 mm bore falls short on power (offering only 825 N pull at 0.5 MPa) but an 80 mm bore is excessive (delivering 2268 N pull). The 30 mm adjustment window is ideal for product changeovers, allowing you to dial in the exact end position without swapping the cylinder for a fixed-stroke SAI. For load-holding without live air pressure, note that this rear adjuster acts only as a travel stop; you would need an SAIL air-released lock, a BSAI clamp-lock, or an external pilot-operated check valve.
Because the 400 mm stroke is substantial, the 20 mm rod diameter and M16x1.5 rod thread will still experience leverage forces. Even with the robust stainless rod, an external guide rail is recommended to prevent side-load wear on the seals. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ63AX400-30S FAQ
At 0.5 MPa it provides 1559 N of pull force and 1402 N of push force. At 0.7 MPa, push force increases to 2182 N. The operational speed range for this 63 mm bore cylinder is 30-800 mm/s.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 400 mm nominal stroke by up to 30 mm, providing a usable travel window of 370-400 mm. It only sets the travel end and does not hold the load without live air pressure.
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