This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X175-50, 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 SIJ80X175-50
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X175-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 175mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X175-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X175-50
- 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 SIJ80X175-50
The AirTAC SIJ80X175-50 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder. It is discontinued, replaced directly by the SAIJ80X175-50. The external stop screw lets you trim the extend stroke by up to 50mm on-site, giving a usable forward stroke of 125-175mm from the 175mm nominal maximum. It features a 25mm rod, M20x1.5 thread, 36mm adjustable cushions, and a G3/8 port.
The SAIJ direct retains the exact ISO 15552 mounting interface, force, and adjust window, but upgrades to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this SKU lacks a -S magnet and cannot take a sensor; the stop screw sets end position but is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X175-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X175-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X175-50 |
| Bore size | Ø80 mm |
| Stroke | 175 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 SAIJ80X175-50 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 SAIJ80X175-50 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 SIJ80X175-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×175 | 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 SIJ80X175-50 Is Used
Press Fit Tuning
Trimming the extend stroke by up to 50mm on-site allows precise press-fit depth without machining custom spacers.
Variable Transfer Stops
Adjusting the forward stop position dynamically accommodates different product lengths on a single line.
Pallet Positioning
Field-tuning the extend end position ensures accurate pallet alignment before downstream wrapping.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X175-50 with the SAIJ80X175-50
To replace the discontinued SIJ80X175-50, order the SAIJ80X175-50 direct. Choose the 50mm adjust window when you need precise on-site extend tuning between 125-175mm. Reuse FA, LB, or TC mounts. Because this SKU has no -S magnet, it cannot accept a magnetic switch. For strokes over 300mm, carefully manage side loading to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X175-50
- ✓ 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 SIJ80X175-50 FAQ
Yes, the SIJ80X175-50 is discontinued. The direct replacement is the SAIJ80X175-50, which shares the same ISO 15552 interface, 80mm bore, 175mm stroke, 50mm adjust window, G3/8 port, and mounting.
The external stop screw provides a 50mm adjust window, shortening the 175mm maximum extend stroke down to 125mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X175-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X175-50 replacement — usually within 7-8 hours.