This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X900-20, 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 SIJ80X900-20
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-20 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 SAIJ80X900-20, 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 → SAIJ80X900-20
- 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 SIJ80X900-20
The AirTAC SIJ80X900-20 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with an 80 mm bore and a 900 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, giving a usable range of 880-900 mm. The stop sets the end position; it is not a load lock.
This SIJ model is discontinued; the direct replacement is the SAIJ80X900-20, sharing the same ISO 15552 interface, force, port, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. Note: this SKU lacks a -S magnet and cannot take a switch; a plain cylinder drifts on air loss, so use an external rod lock for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-20 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X900-20 |
| 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 SAIJ80X900-20 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 SAIJ80X900-20 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 SIJ80X900-20
| 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 SIJ80X900-20 Is Used
Variable-Length Pusher
Tuning a 900 mm extend stroke down by 20 mm to match varying product lengths on a packaging line without swapping cylinders.
Machine Setup Calibration
Fine-tuning the final end-of-stroke contact position during equipment commissioning to dial in exact clamping pressure.
Adjustable Transfer Stop
Acting as a moveable end-stop on a conveyor where the physical product contact point requires slight on-site adjustment.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-20 with the SAIJ80X900-20
To replace the discontinued SIJ80X900-20, order the direct replacement SAIJ80X900-20, keeping the 900 mm nominal stroke and 20 mm adjust window (880-900 mm usable extend). Reuse existing FA, LB, or TC ISO 15552 mounts. Because this SKU has no -S magnet, it cannot accept a legacy CS1-B or DS1-B sensor; add external sensing if needed. At a 900 mm stroke, mind side-load and rod-bending forces—use external guides to prevent binding. The stop screw sets end position only; it is not a lock, and the cylinder will drift without live air.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X900-20
- ✓ 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 SIJ80X900-20 FAQ
Yes, the SIJ80X900-20 is discontinued. The direct replacement is the SAIJ80X900-20. It shares the same ISO 15552 interface, 80 mm bore, 900 mm stroke, 20 mm adjust window, G3/8 port, and mounting options. The SAIJ family also adds upgraded two Y-shaped one-way piston seals for longer life.
The external stop screw provides a 20 mm adjust window, allowing you to trim the 900 mm extend stroke down to 880 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X900-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X900-20 replacement — usually within 7-8 hours.