This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X125-40, 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 SIJ80X125-40
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-40 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 SAIJ80X125-40, 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 → SAIJ80X125-40
- 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 SIJ80X125-40
The AirTAC SIJ80X125-40 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with an 80 mm bore and 125 mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 85-125 mm extension window. The stop sets the end position but is not a load lock; loads drift on air loss.
The direct replacement is the SAIJ80X125-40, reusing your ISO 15552 mounting interface and porting. The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This non-magnet SKU lacks sensing.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X125-40 |
| 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 SAIJ80X125-40 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 SAIJ80X125-40 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 SIJ80X125-40
| 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 SIJ80X125-40 Is Used
Variable-depth machining stops
Trimming the extend stroke by up to 40 mm on-site allows operators to set precise 85-125 mm machining feed positions without swapping the entire cylinder.
Adjustable package diverters
Field-tuning the extend endpoint accommodates varying box widths on a packaging line, ensuring the diverter meets exact product dimensions safely.
Custom-format pallet stops
An external stop screw provides quick on-site adjustment of the pallet stop position for different pallet depths, avoiding fixed-stroke cylinder changes.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-40 with the SAIJ80X125-40
To replace the discontinued SIJ80X125-40, order the direct replacement SAIJ80X125-40, keeping the 125 mm max stroke and 40 mm adjust window (85-125 mm usable extend). Reuse FA, LB, or TC mounts via the ISO 15552 interface. This SKU has no -S suffix and cannot take a magnetic switch; add external sensors if needed. For strokes >=300 mm, verify side-load guidance to prevent rod binding. The stop screw sets end position only; for held loads use an external rod lock, pilot-operated check valve, or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X125-40
- ✓ 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 SIJ80X125-40 FAQ
Yes, the SIJ80X125-40 is discontinued. The direct replacement is the SAIJ80X125-40, offering the same ISO 15552 interface, 80 mm bore, 125 mm stroke, 40 mm adjust window, G3/8 port, and mounting options. The SAIJ features an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The external stop screw provides a 40 mm adjust window, shortening the 125 mm nominal extend stroke to a usable 85-125 mm. The stop sets end position only and is not a load lock; for held loads use an external rod lock or SAIL/BSAI variant.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X125-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X125-40 replacement — usually within 7-8 hours.