Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-40
The AirTAC Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø63mm bore and 900mm 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
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-40
The AirTAC SAIJ63X900-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 860 to 900 mm, allowing you to dial back the nominal 900 mm stroke by up to 40 mm during commissioning. Delivering 2182 N of push force and 1402 N of pull force at 0.5 MPa, it handles robust actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
This model uses a 20 mm carbon steel rod with an M16x1.5 thread. At 900 mm, this long stroke requires an external guide to prevent excessive side-loading on the rod. The rear adjuster acts strictly as a travel stop for end-position tuning; it does not hold the load without live air. For load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder.
Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-40 Technical Specifications
| Model | Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø63 mm |
| Stroke | 900 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 SAIJ63X900-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 63 | Bore size in mm. |
| ×900 | 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 SAIJ63X900-40 Is Used
Product Changeover
Dial the stroke back by up to 40 mm to accommodate different product lengths on a packaging line without changing the cylinder.
Machine Setup
Fine-tune the exact end-position during commissioning to achieve precise 860 to 900 mm travel without external stopper hardware.
Long-Stroke Actuation
Drive heavy loads over 900 mm of travel with 2182 N of push force at 0.7 MPa, using an external guide to manage side loads.
Is the Airtac SAIJ63 Adjustable Stroke Air Cylinder SAIJ63X900-40 the Right Cylinder?
Choose this 63 mm bore when 50 mm bore thrust (982 N push at 0.5 MPa) is insufficient, but 80 mm bore force (2513 N) is excessive. An adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, eliminating the need to swap cylinders or bolt on external stops. When replacing an ISO 15552 cylinder, match the 63 mm bore, 900 mm stroke, 40 mm adjustment range, PT G3/8 port, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the stroke is 900 mm, always use an external guide rail to support the load and absorb side-load forces.
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 SAIJ63X900-40 FAQ
At 0.7 MPa operating pressure, this 63 mm bore cylinder generates 2182 N of push force and 1982 N of pull force. At the maximum 1.0 MPa pressure, it reaches 318 kgf.
The rear adjuster screw acts as a mechanical stop that shortens the effective travel. For this 900 mm stroke model, you can fine-tune the usable travel window down to 860 mm without replacing the cylinder.
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