Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 140mm 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
- Stroke140 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-40
The AirTAC SAIJ63X140-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 140 mm stroke that can be dialed back by up to 40 mm, giving you a precise 100-140 mm usable travel window for commissioning without external stops. In the 63 mm bore class, it delivers 1559 N of push force and 1402 N of pull force at 0.5 MPa operating pressure.
This variant is built with a SUS420J2 stainless steel rod for enhanced corrosion resistance and uses PT tapered ports. It supports pneumatic speeds of 30-800 mm/s and includes variable air cushions at both ends to manage deceleration. The extruded aluminum barrel features sensor grooves on both sides, allowing you to easily mount CMSE reed or DMSE solid-state switches if a magnet is added later.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 140 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 SAIJ63AX140-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×140 | 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 SAIJ63AX140-40 Is Used
Machine Changeover
Dial in the 100-140 mm travel window during product size transitions to set new end stops without physically swapping cylinders.
Assembly Positioning
Fine-tune the retract end-position during commissioning to achieve precise part placement using the 63 mm bore's 1559 N thrust.
Variable End Stops
Adjust the rear stopper screw up to 40 mm to accommodate varying material thicknesses on the production line without adding external stops.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63AX140-40 the Right Cylinder?
Choose this 63 mm bore adjustable-stroke cylinder when your application requires 1559 N of thrust at 0.5 MPa but demands on-the-fly end-position tuning during machine setup or product changeover. If your process needs less force, stepping down to a 50 mm bore yields 982 N push force; stepping up to an 80 mm bore provides 2513 N. The rear adjuster screw acts solely as a mechanical stop to set the retract position and does not lock the load without live air pressure. For load-holding requirements without continuous air, consider an AirTAC SAIL or BSAI series cylinder instead.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 63 mm bore, 140 mm nominal stroke, 40 mm adjustment range, PT G3/8 port, and the SUS420J2 rod material. It uses a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since this is a 140 mm stroke, side-loading is minimal, but long unsupported strokes over 300 mm would require an external guide.
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 SAIJ63AX140-40 FAQ
It features a rear external adjusting screw that shortens the effective stroke by up to 40 mm. This provides a usable travel window of 100-140 mm, allowing you to fine-tune the end position at commissioning without changing the cylinder.
At 0.5 MPa operating pressure, this 63 mm bore double-acting cylinder provides 1559 N of push force and 1402 N of pull force. It can reach up to 318 kgf at the maximum 1.0 MPa 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 SAIJ63AX140-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.