This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X800-40S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X800-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X800-40S
- 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40S
The AirTAC SIJ63X800-40S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a built-in piston magnet. Its external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable 760-800 mm window from the 800 mm nominal maximum. It features a 20 mm rod, M16x1.5 rod thread, 30 mm adjustable cushions, and a G3/8 port.
As the SIJ series is end-of-life, the direct replacement is the SAIJ63X800-40S, retaining the same ISO 15552 interface, bore, stroke, adjust window, force, and port. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; the cylinder drifts on air loss. For load holding, use an external rod lock or the SAIL/BSAI lock variants.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X800-40S |
| Bore size | Ø63 mm |
| Stroke | 800 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, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ63X800-40S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / 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 | |
The SAIJ63X800-40S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×800 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40S Is Used
Variable-Length Part Ejection
Tune the 760-800 mm extend stroke on-site to eject mixed-length parts from a machining center without repositioning the cylinder body.
Adjustable Transfer Pusher
Trim the extend stroke by up to 40 mm to adapt a transfer pusher for varying pallet sizes while maintaining the full 800 mm retraction.
Custom Packaging Stops
Set precise end positions for cartons of differing depths on a packaging line, using the external stop screw to dial in the exact 760-800 mm reach.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40S with the SAIJ63X800-40S
To replace the discontinued SIJ63X800-40S, order the direct replacement SAIJ63X800-40S, ensuring your CS1-B/DS1-B legacy sensors are updated to current AirTAC switches for the -S magnet. Choose the 40 mm adjust window if your application requires field tuning the extend stroke between 760 and 800 mm. Mounting options include FA, LB, and TC brackets. Because the stroke is 800 mm, support the rod to prevent bending and use external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X800-40S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-40S FAQ
Yes, the SIJ63X800-40S is discontinued. The direct replacement is the SAIJ63X800-40S, offering the same ISO 15552 interface, 63 mm bore, 800 mm stroke, 40 mm adjust window, G3/8 port, and mounting options. The SAIJ family features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw allows you to shorten the extend stroke by up to 40 mm on-site, yielding a usable 760-800 mm window. The stop sets end position only and does not lock the load.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X800-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X800-40S replacement — usually within 7-8 hours.