Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X270-40S
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X270-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 270mm 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
- Stroke270 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X270-40S
The AirTAC SAIJ63X270-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window between 230 and 270 mm without adding external stops. Delivering a push force of 1559 N at 0.5 MPa (or 2805 N at 0.9 MPa), it provides robust performance for mid-range automation tasks. The integrated -S magnet enables precise end-position detection using CMSE reed or DMSE electronic sensors.
This model uses a carbon steel piston rod with an M16x1.5 thread, paired with a G3/8 PT port to handle the required air volume. It features variable air cushions at both ends (36 mm cushion length) to absorb kinetic energy. The rear adjuster acts purely as a mechanical stop to set the end position; it does not lock the load, so live air pressure must be maintained to hold a position.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X270-40S Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X270-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 270 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 SAIJ63X270-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×270 | 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 SAIJ63X270-40S Is Used
Product Changeover
Dial in the 230-270 mm travel window during format changes on a packaging line without physically replacing the cylinder.
End-Stop Tuning
Fine-tune the retract end position during machine commissioning to perfect the seating of a 1559 N press operation.
Variable End Positioning
Adjust the stroke dynamically for parts of varying heights on an assembly conveyor without adding external mechanical stops.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X270-40S the Right Cylinder?
Choose this 63 mm bore when your application requires the 1559 N push force at 0.5 MPa, stepping up from a 50 mm bore (982 N) for heavier payloads, or down from an 80 mm bore (2513 N) to save space and air volume. The 40 mm adjustment range is ideal for machine setups requiring frequent product-size changeovers, allowing you to dial in the exact end-stop without swapping out the entire cylinder for a fixed-stroke SAI variant.
Because the 270 mm stroke exceeds the 250 mm threshold, the M16x1.5 carbon steel rod will experience higher leverage forces if subjected to off-axis loads; an external guide rail is recommended to prevent premature seal wear. For load-holding without live air pressure, this cylinder is insufficient as the adjuster is only a stop, so you should explore the SAIL (air-released lock) or BSAI (clamp-lock) series instead. This SAIJ model shares the standard ISO 15552 mounting interface but supports a reduced set of accessories: 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 SAIJ63X270-40S FAQ
At a 0.5 MPa operating pressure, this 63 mm bore cylinder generates a push force of 1559 N and a pull force of 1402 N. If you increase the pressure to 0.9 MPa, the push force reaches 2805 N.
The rear adjusting screw acts as a mechanical stopper that lets you shorten the nominal 270 mm stroke by up to 40 mm, providing a usable travel window of 230 to 270 mm. It is a travel stop, not a lock, so the cylinder requires live air to hold its position.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X270-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.