This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X500-75S, 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 SIJ63X500-75S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X500-75S 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 SAIJ63X500-75S, 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 → SAIJ63X500-75S
- 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 SIJ63X500-75S
The AirTAC SIJ63X500-75S is a discontinued double-acting double-rod adjustable-stroke ISO 15552 cylinder. The external stop screw lets you trim the extend stroke by up to 75mm on-site (usable 425-500mm). The direct replacement is the SAIJ63X500-75S, reusing your ISO 15552 mounting.
The SAIJ upgrade adds a two Y-shaped one-way piston seal for low start-up pressure. The stop screw sets end position but is not a lock; for held loads use SAIL or an external rod lock.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X500-75S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X500-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X500-75S |
| 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 SAIJ63X500-75S 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 SAIJ63X500-75S 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 SIJ63X500-75S
| 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 SIJ63X500-75S Is Used
Variable Depth Forming
Adjusting the extend stroke on-site by up to 75mm allows operators to tune press depth for different material thicknesses without changing the cylinder.
Adjustable Transfer Pushers
Trimming the 500mm extend stroke lets a single conveyor diverter handle varying package sizes, setting precise end positions via the external stop.
Customizable Pallet Stops
Field-tuning the extend stroke provides flexible end-stop locations for mixed pallet dimensions on packaging lines, ensuring accurate positioning.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X500-75S with the SAIJ63X500-75S
Replace the SIJ63X500-75S directly with the SAIJ63X500-75S, matching the 63mm bore, 500mm nominal stroke, 75mm adjust window, and -S magnet. Choose the 75mm window if you need wide on-site extend trimming. Mounting interfaces (FA, LB, TC) reuse existing ISO 15552 dimensions. The -S suffix provides a piston magnet for CS1-B/DS1-B switches. Because the 500mm stroke is long, account for rod-bending and use external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X500-75S
- ✓ 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 SIJ63X500-75S FAQ
Yes, the SIJ63X500-75S is discontinued. The direct replacement is the SAIJ63X500-75S. 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 extend stroke to be shortened from 500mm down to 425mm on-site. The stop sets position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X500-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X500-75S replacement — usually within 7-8 hours.