This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X900-50, 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 SIJ80X900-50
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X900-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X900-50
- 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 SIJ80X900-50
The AirTAC SIJ80X900-50 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 900 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, giving a usable extend window of 850-900 mm. The 80 mm bore uses a G3/8 port, a 25 mm rod, M20x1.5 thread, and 36 mm adjustable cushions.
The direct replacement is the SAIJ80X900-50, preserving the ISO 15552 mounting interface, bore, force, and adjust window. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this non-magnetic SKU cannot take a switch, and the stop sets position only—it is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X900-50 |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAIJ80X900-50 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 SAIJ80X900-50 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 SIJ80X900-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SIJ80X900-50 Is Used
Variable Depth Forming
Tunes the extend stroke on-site by up to 50 mm to accommodate different material thicknesses in a forming press without swapping cylinders.
Adjustable Transfer Pusher
Allows field adjustment of the pusher end-position to handle varying box sizes on a conveyor line within the 850-900 mm travel window.
Pallet Positioning Stop
Provides a fine-tuned hard stop for pallets of varying dimensions, ensuring precise placement before downstream handling.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-50 with the SAIJ80X900-50
To replace the discontinued SIJ80X900-50, order the direct replacement SAIJ80X900-50, which matches the 80 mm bore, 900 mm stroke, 50 mm adjust window, and G3/8 port. Choose the 50 mm adjust window if you need to tune the extend end-position within the 850-900 mm range. Mounting options include Basic, FA, LB, and TC brackets. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch. Finally, at a 900 mm stroke, use external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X900-50
- ✓ 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 SIJ80X900-50 FAQ
Yes, the SIJ80X900-50 is discontinued. The direct replacement is the SAIJ80X900-50, which shares the same ISO 15552 interface, 80 mm bore, 900 mm stroke, 50 mm adjust window, and G3/8 port.
The external stop screw allows you to shorten the extend stroke by up to 50 mm on-site, yielding a usable extend window of 850-900 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X900-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X900-50 replacement — usually within 7-8 hours.