Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100S 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 SAIJ63AX400-100S
The AirTAC SAIJ63X400-100-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 400 mm stroke that can be dialed back by up to 100 mm, yielding a 300-400 mm usable travel window for precise end-position tuning during commissioning. Delivering 2182 N of push force at 0.7 MPa, it is built with a SUS420J2 stainless steel rod and includes a magnet (-S) for position sensing.
This model uses PT tapered ports sized G3/8 and operates at speeds from 30-800 mm/s. The rear adjuster acts purely as a mechanical stop to fine-tune the retract distance without adding external stops. It supports mounting options Basic, FA, LB, TC, FTC, TCM1, and TCM2, and its extruded aluminum barrel features sensor grooves on both sides for CMSE reed or DMSE solid-state switches.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100S |
|---|---|
| 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 SAIJ63AX400-100S
| 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 SAIJ63AX400-100S Is Used
Variable End-Stop Positioning
Dial in the retract distance within the 300-400 mm window during machine setup to accommodate varying material lengths without bolting on external physical stops.
Product Size Changeover
Quickly reconfigure the effective stroke on automated lines processing different product sizes, using the rear screw to fine-tune the end position at commissioning.
Sensor-Driven Assembly
Leverage the integrated magnet and dual sensor grooves to mount DMSE solid-state or CMSE reed switches, confirming the adjusted end-of-travel position in automated assembly cells.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-100S the Right Cylinder?
Select this 63 mm bore cylinder when an application requires a variable end-stop within a 300-400 mm travel window, avoiding the need to swap cylinders during product changeovers. If your process demands less force, stepping down to a 50 mm bore yields 1374 N of push force at 0.7 MPa; stepping up to an 80 mm bore provides 3518 N. Because the 400 mm stroke is substantial, always use an external guide to support the load and mitigate side-load stress on the rod.
To match this ISO 15552 interchangeable cylinder for a replacement, verify the 63 mm bore, 400 mm stroke, 100 mm adjustment range, G3/8 PT ports, and the -S magnet option. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ does not hold loads without live air pressure, so for fail-safe load holding, consider an SAIL or BSAI cylinder instead.
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 SAIJ63AX400-100S FAQ
At 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 acts as a mechanical stop that lets you shorten the effective stroke from 400 mm down to 300 mm. It is a travel stop for fine-tuning end positions, not a lock, and the cylinder remains double-acting.
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