This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X180-50, 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 SIJ80X180-50
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X180-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 180mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X180-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X180-50
- 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 SIJ80X180-50
The AirTAC SIJ80X180-50 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 50 mm on-site, yielding a usable 130-180 mm extend window from the 180 mm nominal maximum. The direct replacement is the SAIJ80X180-50, retaining the same interface, force, and adjust window.
This SKU lacks a -S magnet and cannot take a switch. The SAIJ upgrade uses a two-piece Y-shaped 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 for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X180-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X180-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X180-50 |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAIJ80X180-50 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 SAIJ80X180-50 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 SIJ80X180-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SIJ80X180-50 Is Used
Press Fit Tuning
Dialing in the exact insertion depth of a bearing press where 130-180 mm of travel is needed and the final 50 mm requires on-site stop adjustment.
Diverter Positioning
Setting a specific extended reject-arm position on a packaging line, allowing 50 mm of field trim to accommodate different product widths.
Pallet Stop Adjustment
Acting as an adjustable end-stop for varying pallet sizes, trimming the extend stroke by up to 50 mm to avoid machine redesign.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X180-50 with the SAIJ80X180-50
To replace the discontinued SIJ80X180-50, order the direct replacement SAIJ80X180-50, reusing your FA, LB, or TC ISO 15552 mounts. The 50 mm adjust window is ideal if your end position needs on-site tuning between 130 and 180 mm. This non-magnetic SKU cannot fit legacy CS1-B/DS1-B sensors. For stroke lengths of 300 mm or more, verify the rod-end side-load limits to prevent guide wear. Operating speed is 30-800 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X180-50
- ✓ 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 SIJ80X180-50 FAQ
Yes, the SIJ80X180-50 is discontinued. The direct replacement is the SAIJ80X180-50. The SAIJ family also features an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
The external stop screw provides a 50 mm adjust window, meaning the 180 mm nominal extend stroke can be shortened on-site to a minimum of 130 mm. The stop sets the end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X180-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X180-50 replacement — usually within 7-8 hours.