This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ125X80-100, 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X80-100
The AirTAC SIJ125 Double Rod Adjustable Cylinder SIJ125X80-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 80mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ125X80-100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAIJ125X80-100
- 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X80-100
The AirTAC SIJ125X80-100 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 100 mm on-site, yielding a usable 0-80 mm extend stroke from the 80 mm nominal maximum. The direct replacement is the SAIJ125X80-100, matching the interface, force, and mounting.
Because this SKU lacks the -S suffix, it has no magnet and cannot accept a piston switch. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Remember the stop screw sets end position only; it is not a lock, and loads will drift on air loss without an external rod lock or check valve.
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-100 Technical Specifications
| Model | Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ125X80-100 |
| Bore size | Ø125 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ125X80-100 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAIJ125X80-100 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SIJ125 Double Rod Adjustable Cylinder SIJ125X80-100 Is Used
Press Fit Tuning
Allows operators to fine-tune the extend end position on-site for pressing bearings without swapping physical spacers.
Variable Diverter Stroke
Adjusts the extend reach of a sorting gate to accommodate different package widths on the fly.
Crush Height Calibration
Sets precise material compression depth in a test fixture by trimming the extend stroke within the 100 mm window.
Replacing the Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-100 with the SAIJ125X80-100
To replace the discontinued SIJ125X80-100, order the SAIJ125X80-100 direct, reusing your existing FA, LB, or TC ISO 15552 mounts. Choose the 100 mm adjust window if you need to trim the 80 mm nominal extend stroke down to zero on-site. For strokes of 300 mm or longer, verify your side-load limits to prevent guide wear. This non-magnetic SKU cannot take a sensor; if position feedback is required, select a -S SAIJ model and use legacy CS1-B or DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ125X80-100
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ125 Double Rod Adjustable Cylinder SIJ125X80-100 FAQ
Yes, the SIJ125X80-100 is discontinued. The direct replacement is the SAIJ125X80-100, which shares the identical ISO 15552 interface, 125 mm bore, 80 mm stroke, 100 mm adjust window, G1/2 port, and mounting options. The SAIJ family also features an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw window is 100 mm, allowing you to trim the 80 mm nominal extend stroke down to zero on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ125X80-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ125X80-100 replacement — usually within 7-8 hours.