This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X75-30, 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 SIJ63X75-30
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X75-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X75-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X75-30
- 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 SIJ63X75-30
The AirTAC SIJ63X75-30 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63mm bore and 75mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 30mm on-site, yielding a usable 45-75mm window. The direct replacement is the SAIJ63X75-30, matching the interface, force, and mounting.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. This SKU lacks a -S magnet, so it cannot accept a reed switch. The stop screw sets end position only; it is not a lock. For load holding without live air, use an external rod lock or check valve.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-30 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X75-30 |
| Bore size | Ø63 mm |
| Stroke | 75 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 SAIJ63X75-30 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 SAIJ63X75-30 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 SIJ63X75-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×75 | 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 SIJ63X75-30 Is Used
Press Fit Tuning
Dialing in a 45-75mm press insertion for bearings, where the 30mm external stop screw allows precise on-site end-position trimming without swapping cylinders.
Adjustable Sealing Head
Driving a sealing mechanism that requires field stroke tuning to accommodate various container heights, using the 30mm adjustment window to set the exact crush distance.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-30 with the SAIJ63X75-30
To replace the discontinued SIJ63X75-30, order the direct replacement SAIJ63X75-30, keeping the 63mm bore, 75mm nominal stroke, and 30mm adjust window. The 30mm adjust window is ideal if your end position needs 45-75mm of field tuning. Reuse FA, LB, or TC ISO 15552 mounts. Because this SKU has no -S magnet, it cannot take legacy CS1-B/DS1-B sensors. The stop screw is not a load lock; for held loads use SAIL or BSAI. Stroke is under 300mm, so side-load rod deflection is minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X75-30
- ✓ 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 SIJ63X75-30 FAQ
Yes, the SIJ63X75-30 is discontinued. The direct replacement is the SAIJ63X75-30. It shares the identical ISO 15552 interface, 63mm bore, 75mm stroke, 30mm adjust window, G3/8 port, and mounting options, but features an upgraded two Y-shaped one-way piston seal.
The external stop screw provides a 30mm adjustment window, allowing the 75mm extend stroke to be shortened to a minimum of 45mm on-site. The stop sets position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X75-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X75-30 replacement — usually within 7-8 hours.