This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X80-40S, 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40S
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X80-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X80-40S
- 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40S
The AirTAC SIJ80X80-40S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 25 mm piston rod and G3/8 port. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable 40-80 mm window from the 80 mm nominal maximum.
The direct replacement is the SAIJ80X80-40S, sharing the same interface, force, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position only; it is not a load lock, so use SAIL/BSAI or an external rod lock for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X80-40S |
| Bore size | Ø80 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ80X80-40S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAIJ80X80-40S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40S Is Used
Variable-depth pressing
Trimming the extend stroke by up to 40 mm on-site allows a press to hit varying material thicknesses without re-mounting the cylinder.
Adjustable diverter stroke
A divert arm can be tuned between 40 and 80 mm to push different carton widths accurately on a packaging line.
End-position tuning for stops
External stop screw adjustment lets operators fine-tune the exact end position for pallet stops without machining spacers.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40S with the SAIJ80X80-40S
To replace the discontinued SIJ80X80-40S, order the direct replacement SAIJ80X80-40S, keeping the 80 mm bore, 80 mm nominal stroke, 40 mm adjust window, and -S magnet. Choose the 40 mm adjust window if you need to trim the extend stroke by up to 40 mm on-site. Mounting uses FA, LB, or TC interfaces. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. For strokes >=300 mm, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X80-40S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X80-40S FAQ
Yes, the SIJ80X80-40S is discontinued. The direct replacement is the SAIJ80X80-40S, which shares the same ISO 15552 interface, 80 mm bore, 80 mm stroke, 40 mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded two Y-shaped one-way piston seal.
The external stop screw provides a 40 mm adjust window, allowing you to shorten the extend stroke from the 80 mm maximum down to 40 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X80-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X80-40S replacement — usually within 7-8 hours.