This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X500-75, 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 SIJ63X500-75
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X500-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X500-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X500-75
- 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 SIJ63X500-75
The AirTAC SIJ63X500-75 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63mm bore and 500mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 75mm on-site, giving a usable extend range of 425-500mm. This SIJ model is discontinued; the direct replacement is the SAIJ63X500-75, matching the interface, force, and adjust window.
The SAIJ upgrade uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The stop screw sets the end position but is not a lock; loads drift on air loss. For held loads, use an external rod lock or the SAIL/BSAI variants. This non-magnetic SKU cannot take a switch.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X500-75 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X500-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X500-75 |
| Bore size | Ø63 mm |
| Stroke | 500 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 SAIJ63X500-75 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 SAIJ63X500-75 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 SIJ63X500-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×500 | 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 SIJ63X500-75 Is Used
Variable Depth Forming
Adjusting the extend stroke on-site by up to 75mm allows a single cylinder to press parts to varying depths without changing the entire actuator setup.
Adjustable Transfer Stops
Tuning the extend position lets operators change the physical stop location for different product lengths on a packaging line quickly.
Variable Height Indexing
Trimming the extend stroke provides a method to set precise mechanical end positions for indexing loads of varying heights.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X500-75 with the SAIJ63X500-75
To replace the discontinued SIJ63X500-75, order the direct replacement SAIJ63X500-75, keeping the 63mm bore, 500mm stroke, 75mm adjust window, and G3/8 port. Choose the 75mm adjust window if your process needs on-site extend tuning between 425mm and 500mm; otherwise, a fixed SAI cylinder is simpler. Mounting options include FA, LB, and TC brackets. Because this unit lacks the -S suffix, it cannot accept a magnetic switch. For the 500mm stroke, use external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X500-75
- ✓ 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 SIJ63X500-75 FAQ
Yes, the SIJ63X500-75 is discontinued. The direct replacement is the SAIJ63X500-75. It shares the same ISO 15552 interface, 63mm bore, 500mm stroke, 75mm adjust window, G3/8 port, and mounting options, but features an upgraded piston seal.
The external stop screw window is 75mm, allowing the 500mm extend stroke to be shortened to 425mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X500-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X500-75 replacement — usually within 7-8 hours.