This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X800-75, 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 SIJ63X800-75
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X800-75 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 SAIJ63X800-75, 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 → SAIJ63X800-75
- 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 SIJ63X800-75
The AirTAC SIJ63X800-75 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, giving a usable 725-800 mm forward travel (the 800 mm nominal is the maximum).
Because SIJ is end-of-life, the direct replacement is the SAIJ63X800-75, matching the ISO 15552 mounting interface, bore, force, and port. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this SKU has no -S magnet and cannot take a switch.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-75 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X800-75 |
| 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 SAIJ63X800-75 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 SAIJ63X800-75 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 SIJ63X800-75
| 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 SIJ63X800-75 Is Used
Variable-Length Ejector
Tuning the extend stroke by up to 75 mm on-site allows a single 800 mm cylinder to eject parts of varying heights without swapping the entire actuator.
Adjustable Transfer Pusher
Trimming the forward stroke lets operators reposition a transfer pusher precisely between conveyor lanes, accommodating different package widths on the same line.
Custom-Depth Pallet Stop
An external stop screw provides a field-adjustable end position for pallets of varying depths, ensuring precise placement without re-engineering the fixture.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-75 with the SAIJ63X800-75
To replace the discontinued SIJ63X800-75, order SAIJ63X800-75 (insert A after the leading S), reusing your existing FA, LB, or TC ISO 15552 mounts. The 75 mm adjust window is ideal if final end-position varies by up to 75 mm; the stop screw sets the end position but is not a load lock. Because the 800 mm stroke exceeds 300 mm, support the piston rod against side-load bending and use external guides. This non-magnetic SKU cannot accept legacy CS1-B/DS1-B sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X800-75
- ✓ 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 SIJ63X800-75 FAQ
Yes, the SIJ63X800-75 is discontinued. The direct replacement is the SAIJ63X800-75, which shares the same ISO 15552 interface, 63 mm bore, 800 mm stroke, 75 mm adjust window, G3/8 port, and mounting. The SAIJ family also adds an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 75 mm adjust window, making the usable extend stroke 725-800 mm. The stop sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X800-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X800-75 replacement — usually within 7-8 hours.