This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X900-75, 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 SIJ63X900-75
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X900-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X900-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X900-75
- 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 SIJ63X900-75
The AirTAC SIJ63X900-75 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63 mm bore and 900 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 825-900 mm window. The G3/8 port and 30 mm adjustable cushions govern a 30-800 mm/s speed range. As this SIJ model is end-of-life, the direct replacement is the SAIJ63X900-75, preserving the interface, force, and mounting.
The SAIJ successor retains the ISO 15552 mounting dimensions and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note this non-magnetic SKU cannot take a switch. The stop screw sets end position only; it is not a lock, so use an external rod lock for held loads. At 900 mm, mind rod bending and use external guides.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X900-75 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X900-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X900-75 |
| 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, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ63X900-75 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 SAIJ63X900-75 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 SIJ63X900-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×900 | 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 SIJ63X900-75 Is Used
Variable Stroke Pressing
Dialing in the exact 825-900 mm extend position on-site lets operators tune final press depth without machining custom spacers.
Adjustable Transfer Reject
A 75 mm on-site stroke trim accommodates varying product lengths on a transfer line, fine-tuning the reject arm reach dynamically.
Custom Height Positioning
Set precise vertical stop points for varying pallet sizes, using the external screw to adjust the extend endpoint quickly.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X900-75 with the SAIJ63X900-75
To replace the discontinued SIJ63X900-75, order the direct replacement SAIJ63X900-75, keeping the 75 mm adjust window, G3/8 port, and 30 mm cushions. Choose FA, LB, or TC mounts to reuse your existing ISO 15552 interface. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch; add external sensing if needed. The external stop trims extend position but is not a load lock. Finally, at 900 mm stroke, verify side-load limits and support the rod with external guides to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X900-75
- ✓ 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 SIJ63X900-75 FAQ
Yes, the SIJ63X900-75 is discontinued. The direct replacement is the SAIJ63X900-75. It shares the same ISO 15552 interface, 63 mm bore, 900 mm stroke, 75 mm adjust window, G3/8 port, and mounting options, while adding an upgraded piston seal.
The external stop screw provides a 75 mm adjust window, making the usable extend stroke 825-900 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X900-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X900-75 replacement — usually within 7-8 hours.