This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X80-75S, 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 SIJ63X80-75S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X80-75S 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 SAIJ63X80-75S, 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 → SAIJ63X80-75S
- 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 SIJ63X80-75S
The AirTAC SIJ63X80-75S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 75mm on-site, giving a usable 5-80mm window from the 80mm nominal maximum. This stop sets the end position; it is not a load lock.
The direct replacement is the SAIJ63X80-75S, reusing your ISO 15552 mounting interface. The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. A plain cylinder drifts on air loss; use SAIL or BSAI lock variants for held loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-75S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X80-75S |
| 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 SAIJ63X80-75S 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 SAIJ63X80-75S 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 SIJ63X80-75S
| 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 SIJ63X80-75S Is Used
Multi-Position Clamping
Dial in the exact 5-80mm clamping reach on a machining fixture by turning the external stop screw, accommodating varying raw part widths without swapping cylinders.
Variable Length Diverting
Tune the extend stroke on a sorting diverter arm on-site to handle different box sizes, ensuring the arm extends precisely to the conveyor edge without reprogramming.
Adjustable Forming Depth
Set the precise extend bottom position for a carton forming head, trimming up to 75mm off the nominal stroke to switch between shallow and deep packaging profiles rapidly.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-75S with the SAIJ63X80-75S
Replace the SIJ63X80-75S directly with the SAIJ63X80-75S, retaining the 80mm nominal stroke, 75mm adjust window, M16x1.5 rod thread, and G3/8 port. Select the 75mm adjust window when you need to dial the extend stroke down to a 5mm minimum on-site; a fixed SAI with an external stop lacks this integrated trim capability. Mounting choices include FA, LB, and TC. The -S suffix provides a piston magnet for CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). For this 80mm stroke side-load is minimal, but for any stroke >=300mm confirm guide alignment to prevent rod seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X80-75S
- ✓ 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 SIJ63X80-75S FAQ
Yes, the SIJ63X80-75S is discontinued. The direct replacement is the SAIJ63X80-75S. It shares the same ISO 15552 interface, 63mm bore, 80mm nominal stroke, 75mm adjust window, G3/8 port, and mounting options, but uses an upgraded two Y-shaped one-way piston seal.
The external stop screw window is 75mm, allowing you to trim the extend stroke from the 80mm nominal maximum down to a 5mm minimum on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X80-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X80-75S replacement — usually within 7-8 hours.