This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X40-30, 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 40mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X40-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke40 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X40-30
- 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30
The AirTAC SIJ80X40-30 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 30 mm on-site, giving a usable 10-40 mm stroke from the 40 mm nominal maximum. The direct replacement is the SAIJ80X40-30, matching the interface, force, and mounting.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SKU has no -S magnet and cannot take a switch. The stop screw sets end position only; it is not a lock, so use an external rod lock for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X40-30 |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAIJ80X40-30 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 SAIJ80X40-30 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 SIJ80X40-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SIJ80X40-30 Is Used
Short-Stroke Clamping
Adjustable end-position clamping of castings on a machining line, allowing 10-40 mm of travel to accommodate raw part variance without swapping cylinders.
Variable Divert Gate
Actuating a divert gate on a conveyor where the required extend length must be tuned on-site by up to 30 mm to match adjacent guide rail spacing.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30 with the SAIJ80X40-30
To replace the discontinued SIJ80X40-30, order the direct replacement SAIJ80X40-30, reusing your existing FA, LB, or TC ISO 15552 mounts. Choose the 30 mm adjust window if your fixture needs on-site extend tuning between 10 and 40 mm. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors. The external stop screw sets the end position but is not a load lock; for load holding on air loss, specify an external rod lock or pilot-operated check valve. Side-load alignment is less critical for this 40 mm stroke, but always verify rod parallelism.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X40-30
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30 FAQ
Yes, the SIJ80X40-30 is discontinued. The direct replacement is the SAIJ80X40-30, which shares the same ISO 15552 interface, 80 mm bore, 40 mm stroke, 30 mm adjust window, G3/8 port, and mounting options. The SAIJ family also uses an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 30 mm adjust window, allowing you to shorten the 40 mm nominal extend stroke down to 10 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X40-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X40-30 replacement — usually within 7-8 hours.