This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1125N, 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 SI100 Standard Cylinder SI100X1125N
The AirTAC SI100 Standard Cylinder SI100X1125N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1125mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1125N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke1125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X1125N
- 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 SI100 Standard Cylinder SI100X1125N
The AirTAC SI100X1125N is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 1125 mm stroke. Generating 3927 N push force at 0.5 MPa via a G1/2 port, it is replaced by the SAI100X1125N direct. This NBR-sealed unit lacks a magnet, so it cannot accept a sensor.
The SAI replacement retains the exact ISO 15552 mounting interface but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure. If higher heat is needed, Viton H seals raise the limit to 150 C.
Airtac SI100 Standard Cylinder SI100X1125N Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X1125N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1125N |
| Bore size | Ø100 mm |
| Stroke | 1125 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 SAI100X1125N 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 SAI100X1125N produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI100 Standard Cylinder SI100X1125N
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×1125 | 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 SI100 Standard Cylinder SI100X1125N Is Used
Long-Stroke Material Transfer
Pushes heavy pallets across 1125 mm gaps with 3927 N force, though external guides are required to absorb side loads.
Large Assembly Press
Actuates 100 mm bore tooling over extended 1125 mm travels, relying on 36 mm adjustable cushions to decelerate.
Replacing the Airtac SI100 Standard Cylinder SI100X1125N with the SAI100X1125N
To replace the SI100X1125N, order the SAI100X1125N, confirming the ISO 15552 interface, 100 mm bore, 1125 mm stroke, G1/2 port, and NBR seals. This nonstandard stroke exceeds the 1000 mm threshold, so external guides are critical to prevent rod bending and side-load wear. Because this SKU lacks a magnet (-S), it cannot support CS1-B/DS1-B sensors. The plain cylinder does not hold load without air; use an external pilot check valve or the SAIL/BSAI lock variants. Neighbouring bores: 80 mm yields 2513 N push @0.5 MPa, while 125 mm yields 6136 N.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X1125N
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI100 Standard Cylinder SI100X1125N FAQ
Yes, the SI100X1125N is discontinued. The direct replacement is the SAI100X1125N, which shares the identical ISO 15552 mounting interface, 100 mm bore, 1125 mm stroke, force, and G1/2 port.
It features a G1/2 port and provides 3927 N push / 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a maximum theoretical force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X1125N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1125N replacement — usually within 7-8 hours.