This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X80-40, 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 SIJ63X80-40
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X80-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X80-40
- 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 SIJ63X80-40
The AirTAC SIJ63X80-40 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw trims the extend stroke by up to 40 mm on-site, yielding a usable 40-80 mm stroke from the 80 mm nominal maximum. The direct replacement is the SAIJ63X80-40, matching the interface, force, and mounting.
The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU lacks a magnet (-S), so it cannot take a switch. The stop sets end position only; it is not a load lock.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X80-40 |
| Bore size | Ø63 mm |
| Stroke | 80 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 SAIJ63X80-40 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 SAIJ63X80-40 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 SIJ63X80-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×80 | 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 SIJ63X80-40 Is Used
Variable-depth pressing
Tune the 40 mm extend window on-site to press bearings to varying depths without swapping the entire cylinder body.
Variable-height locating pins
Dial in the extend stroke up to 40 mm to position workpieces of varying heights before a secondary clamping operation.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-40 with the SAIJ63X80-40
Replace the SIJ63X80-40 directly with the SAIJ63X80-40, reusing your FA, LB, or TC mounts. The 40 mm adjust window is ideal if your end-position tolerance is under 40 mm. This non-magnetic SKU cannot fit a sensor; for sensing use the -S suffix. For stroke lengths >=300 mm, verify side-load guide tolerance. The stop screw sets end position but does not hold loads on air loss; for held loads use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X80-40
- ✓ 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 SIJ63X80-40 FAQ
Yes, the SIJ63X80-40 is discontinued. The direct replacement is the SAIJ63X80-40, which matches the ISO 15552 interface, bore, stroke, force, G3/8 port, and mounting hardware.
The external stop screw provides a 40 mm adjust window, shortening the 80 mm nominal extend stroke down to 40 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X80-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X80-40 replacement — usually within 7-8 hours.