This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X75-30STC, 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 SIJ80X75-30STC
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-30STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X75-30STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X75-30STC
- 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 SIJ80X75-30STC
The AirTAC SIJ80X75-30STC is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued and superseded by the direct replacement SAIJ80X75-30STC. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 45-75 mm extension out of the 75 mm nominal maximum. The stop sets the end position but is not a load lock.
The SAIJ successor retains the ISO 15552 mounting interface and adds an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. A plain cylinder drifts on air loss, so use an external rod lock for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-30STC Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-30STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X75-30STC |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAIJ80X75-30STC 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 SAIJ80X75-30STC 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 SIJ80X75-30STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-30STC Is Used
Press Fit Tuning
Allows operators to fine-tune the 45-75 mm extend stroke on-site for inserting parts without re-engineering the entire fixture.
Variable Diverter Gate
Adjusts the extend stop position by up to 30 mm to accommodate different package sizes on a sorting line.
Adjustable End Stop
Sets a precise external mechanical end position for pallet positioning that can be dialed in during machine commissioning.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-30STC with the SAIJ80X75-30STC
To replace the discontinued SIJ80X75-30STC, order the direct replacement SAIJ80X75-30STC, which matches the 80 mm bore, 75 mm stroke, 30 mm adjust window, G3/8 port, and TC mounting interface. Choose the 30 mm adjust window if your application requires field-tuning the extend stroke within a 45-75 mm range. The TC mount allows ISO 15552 interchange via mounting-interface dimensions. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). For stroke lengths of 300 mm or greater, verify your side-load limits to prevent excessive rod wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X75-30STC
- ✓ 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 SIJ80X75-30STC FAQ
Yes, the SIJ80X75-30STC is discontinued. The direct replacement is the SAIJ80X75-30STC, sharing the same ISO 15552 interface, 80 mm bore, 75 mm stroke, 30 mm adjust window, and G3/8 port. The SAIJ upgrade features a two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 30 mm adjust window, allowing you to trim the 75 mm nominal extend stroke down to 45 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X75-30STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X75-30STC replacement — usually within 7-8 hours.