Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40S 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 SAIJ63AX400-40S
The AirTAC SAIJ63X400-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 360-400 mm usable travel window, allowing you to dial back the 400 mm nominal stroke by up to 40 mm during commissioning or product changeovers without swapping the cylinder or adding external stops. Delivering 1559 N pull force at 0.5 MPa, it is tailored for precise end-position tuning.
This variant includes a SUS420J2 stainless steel rod for enhanced corrosion resistance and a built-in magnet (-S) compatible with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and fluid connections use PT tapered threads (G3/8 port). The rear adjuster acts strictly as a travel stop for deceleration, not a load-holding lock.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40S |
|---|---|
| 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 SAIJ63AX400-40S
| 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 SAIJ63AX400-40S Is Used
Product Changeover
Dial in the exact 360-400 mm end-stop for different sized parts on a packaging line without changing hardware.
Machine Setup
Fine-tune the retract end position during commissioning to perfect a pressing or lifting operation.
Variable End Stops
Adjust the travel window dynamically to accommodate multiple product sizes on a single conveyor.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40S the Right Cylinder?
Choose this 63 mm bore when an application requires approximately 1559 N of pull force at 0.5 MPa (or 2182 N at 0.7 MPa) combined with a variable end-stop. If your process needs less force, stepping down to a 50 mm bore yields 825 N of pull force at 0.5 MPa; if you need more push power, an 80 mm bore provides 2513 N at 0.5 MPa. Because the 400 mm stroke is relatively long, ensure you use an external guide to support the load and mitigate side-load stress on the M16x1.5 rod thread.
An adjustable stroke is ideal for machines requiring fine end-position tuning on the fly. For load-holding without live air pressure, this cylinder is not suitable as the adjuster is only a stop; instead, consider the SAIL (air-released lock) or BSAI (clamp-lock) series. To match this ISO 15552 replacement, specify: 63 mm bore, 400 mm stroke, 40 mm adjustment, PT G3/8 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and a magnet for CMSE/DMSE sensors.
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 SAIJ63AX400-40S FAQ
At 0.5 MPa, this 63 mm bore cylinder provides 1559 N of pull force and 1402 N of push force. At 0.7 MPa, it delivers 2182 N of push force.
The rear adjuster screw lets you shorten the effective travel from the 400 mm nominal stroke down to 360 mm. It acts as a mechanical stop to set the end position, but it does not hold the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX400-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.