This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X125-40S, 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 SIJ80X125-40S
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X125-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X125-40S
- 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 SIJ80X125-40S
The AirTAC SIJ80X125-40S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 125 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding an 85-125 mm usable window. This SIJ model is discontinued; the direct replacement is the SAIJ80X125-40S, retaining the same interface, force, and adjust window.
The SAIJ successor incorporates an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. The external stop sets the end position but is not a load lock; for held loads use an external rod lock or SAIL/BSAI variant.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-40S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X125-40S |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80X125-40S 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 SAIJ80X125-40S 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 SIJ80X125-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SIJ80X125-40S Is Used
Press Fit Tuning
Dialing in a precise insertion depth on an assembly line where material thickness varies, using the 40 mm stop screw to trim the extend stroke on-site without swapping cylinders.
Variable Length Diverter
Adjusting a pneumatic diverter arm stroke from 125 mm down to 85 mm to accommodate changing package sizes on a conveyor without repositioning the ISO 15552 mounting.
Crush-Sensitive Forming
Limiting the extend stroke to protect delicate product inside a packaging former, setting the exact end position dynamically based on the specific run requirements.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-40S with the SAIJ80X125-40S
To replace the discontinued SIJ80X125-40S, order the direct replacement SAIJ80X125-40S, which preserves the 80 mm bore, 125 mm stroke, 40 mm adjust window, G3/8 port, and ISO 15552 mounting. Choose the 40 mm adjust window if your application requires fine-tuning the extend stroke down to 85 mm on-site; if a fixed 125 mm stroke suffices, a standard SAI avoids the external stop. Mounting options include FA, LB, and TC brackets. The -S magnet supports legacy CS1-B/DS1-B switches, while the SAIJ uses current AirTAC switches. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X125-40S
- ✓ 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 SIJ80X125-40S FAQ
Yes, the SIJ80X125-40S is discontinued. The direct replacement is the SAIJ80X125-40S. It shares the same ISO 15552 interface, 80 mm bore, 125 mm stroke, 40 mm adjust window, G3/8 port, and mounting options, but features an upgraded piston seal.
The external stop screw offers a 40 mm adjust window, allowing you to trim the extend stroke from the 125 mm maximum down to 85 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X125-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X125-40S replacement — usually within 7-8 hours.