This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X400-10, 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 SIJ80X400-10
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-10 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 400mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X400-10, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X400-10
- 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 SIJ80X400-10
The AirTAC SIJ80X400-10 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 400 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 390-400 mm end position. Note this SKU lacks a magnet (-S), so it cannot accept a magnetic switch.
This SIJ model is discontinued; the direct replacement is the SAIJ80X400-10, matching the ISO 15552 interface, bore, force, and mountings. The SAIJ upgrade features a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant to hold loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-10 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X400-10 |
| Bore size | Ø80 mm |
| Stroke | 400 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 SAIJ80X400-10 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 SAIJ80X400-10 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 SIJ80X400-10
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×400 | 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 SIJ80X400-10 Is Used
Press Fit Tuning
Micro-adjusting the 400 mm extend stroke by up to 10 mm on-site to set precise bottoming force for pressing bearings without machining hard stops.
Divertor End Position
Trimming the extend stroke on a divertor arm to account for varying package widths, using the external stop screw to set exact 390-400 mm reach.
Pallet Stop Calibration
Fine-tuning the end position of a pallet stop gate in a high-speed line, allowing 10 mm of field adjustment to compensate for mechanical wear.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-10 with the SAIJ80X400-10
To replace the discontinued SIJ80X400-10, order the direct replacement SAIJ80X400-10, which preserves the G3/8 port, M20x1.5 rod thread, and FA/LB/TC mountings. The 10 mm adjust window is chosen when you need micro-adjustments to the extend end position (390-400 mm). Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors. For the 400 mm stroke, ensure external guides to prevent rod bending and side-load wear. The stop screw decelerates the piston but does not lock the load on air loss; for held loads use a pilot-operated check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X400-10
- ✓ 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 SIJ80X400-10 FAQ
Yes, the SIJ80X400-10 is discontinued. The direct replacement is the SAIJ80X400-10. It shares the identical ISO 15552 interface, 80 mm bore, 400 mm stroke, 10 mm adjust window, G3/8 port, and mounting options. The SAIJ family also upgrades the piston seal to a two Y-shaped one-way element design for lower start-up pressure and longer life.
The external stop screw allows you to trim the extend stroke by up to 10 mm on-site, giving a usable extend range of 390-400 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X400-10
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X400-10 replacement — usually within 7-8 hours.