This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X125-75, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 125mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X125-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X125-75
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75
The AirTAC SIJ100X125-75 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100mm bore and 125mm maximum stroke. An external stop screw lets you trim the extend stroke by up to 75mm on-site, yielding a usable 50-125mm window. The direct replacement is the SAIJ100X125-75, matching the interface, force, and mounting.
The SAIJ upgrade utilizes an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets end position but is not a load lock; use an external rod lock for held loads. This non-magnetic SKU cannot take a switch.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X125-75 |
| Bore size | Ø100 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 SAIJ100X125-75 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X125-75 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75 Is Used
Variable Depth Forming Press
Needs field stroke tuning to set precise material deformation depths between 50mm and 125mm without swapping the entire actuator.
Adjustable Transfer Pusher
Requires on-site extend stroke trimming up to 75mm to accommodate changing package sizes on a G1/2 ported ISO 15552 line.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75 with the SAIJ100X125-75
To replace the discontinued SIJ100X125-75, order the direct replacement SAIJ100X125-75, matching the 125mm max stroke, 75mm adjust window, and G1/2 port. Choose the 75mm adjust window if you need to trim the extend stroke down to a 50mm minimum on-site. Mounting reuses ISO 15552 interface dimensions (Basic, FA, LB, TC). As this SKU lacks the -S magnet, it cannot accept a sensor; for sensing, select an SAIJ-S model and use legacy CS1-B/DS1-B switches. Because the nominal stroke is under 300mm, side-load wear is less critical, but always verify guide alignment. Remember the stop screw only sets end position and does not lock the load on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X125-75
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X125-75 FAQ
Yes, the SIJ100X125-75 is discontinued. The direct replacement is the SAIJ100X125-75, which shares the same ISO 15552 interface, 100mm bore, 125mm stroke, 75mm adjust window, and G1/2 port. The SAIJ family also adds an upgraded piston seal and lock variants.
The external stop screw window is 75mm, allowing you to trim the extend stroke from the 125mm maximum down to a 50mm minimum on-site. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X125-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X125-75 replacement — usually within 7-8 hours.