This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X800-75S, 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 SIJ63X800-75S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X800-75S 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 SAIJ63X800-75S, 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 → SAIJ63X800-75S
- 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 SIJ63X800-75S
The AirTAC SIJ63X800-75S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63mm bore and 800mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 75mm on-site, yielding a usable 725-800mm window.
Because SIJ is end-of-life, the direct replacement is the SAIJ63X800-75S, retaining the same interface, force, and port. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-75S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X800-75S |
| 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 SAIJ63X800-75S 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 SAIJ63X800-75S 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 SIJ63X800-75S
| 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 SIJ63X800-75S Is Used
Variable Pitch Indexing
Tuning the extend stroke by up to 75mm on-site allows a single 800mm cylinder to adapt to different product lengths without changing the entire actuator assembly.
Adjustable Transfer Pusher
Field-trimming the extend end position lets operators compensate for conveyor drift or varying package dimensions directly at the G3/8 ported stop screw.
Multi-Height Destacker
A 725-800mm usable stroke window provides flexibility for destacking varying pallet heights, setting the exact lower position via the external stop.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-75S with the SAIJ63X800-75S
To replace the discontinued SIJ63X800-75S, order the direct replacement SAIJ63X800-75S, reusing your existing ISO 15552 FA, LB, or TC mounts and G3/8 piping. Choose the -75mm adjust window if your fixture needs field tuning between 725 and 800mm. The -S suffix confirms the piston magnet is present for legacy CS1-B/DS1-B switches. Because the 800mm stroke is long, ensure external guides prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X800-75S
- ✓ 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 SIJ63X800-75S FAQ
Yes, the SIJ63X800-75S is discontinued. The direct replacement is the SAIJ63X800-75S. It shares the same ISO 15552 interface, 63mm bore, 800mm stroke, 75mm adjust window, G3/8 port, and mounting, but upgrades to a two Y-shaped one-way piston seal for longer life.
The external stop screw shortens the extend stroke by up to 75mm on-site, giving a usable 725-800mm window. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X800-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X800-75S replacement — usually within 7-8 hours.