This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X120, 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 SI100X120
The AirTAC Airtac SI100 Standard Cylinder SI100X120 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 120mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X120, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke120 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X120
- 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 SI100X120
The AirTAC SI100X120 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 120mm stroke. It delivers a push force of 3927N and pull of 3681N at 0.5MPa, utilizing a G1/2 port and M20x1.5 rod thread. Because this legacy series is end-of-life, AirTAC replaced it with the SAI100X120, a direct upgrade retaining the exact ISO 15552 mounting interface, output force, and stroke.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S), so it cannot accept position sensors like the legacy CS1-B/DS1-B switches.
Airtac SI100 Standard Cylinder SI100X120 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X120 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X120 |
| Bore size | Ø100 mm |
| Stroke | 120 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 SAI100X120 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 SAI100X120 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 SI100X120
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×120 | 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 SI100X120 Is Used
Heavy Press Clamping
Ideal for holding heavy workpieces in machining fixtures, utilizing the 3927N push force at 0.5MPa to secure parts against cutting loads.
Bulk Material Diversion
Actuates large heavy-duty diverter gates on conveyor systems, where the 120mm stroke and high output force reliably redirect dense goods.
Replacing the Airtac SI100 Standard Cylinder SI100X120 with the SAI100X120
To replace the discontinued SI100X120, order the SAI100X120 and confirm the ISO 15552 mounting interface, 100mm bore, 120mm stroke, and G1/2 port (PT/G/NPT threads). Retain your original mounting accessory (LB, FA, TC, etc.) and note that this non-magnet version cannot support sensing. If sizing alternatives, neighboring bores offer different force classes: an 80mm bore yields 2513N push while a 125mm provides 6136N at 0.5MPa. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding consider an external pilot check valve or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve option for bores up to 100mm.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X120
- ✓ 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 SI100X120 FAQ
Yes, the AirTAC SI100X120 is discontinued. The direct replacement is the SAI100X120. It features the same ISO 15552 mounting interface, 100mm bore, 120mm stroke, output force, and G1/2 port, fitting directly into existing fixtures.
At 0.5MPa it provides 3927N push and 3681N pull; at 0.7MPa push is 5497N; at 0.9MPa push is 7068N; and the theoretical max is 801kgf at 1.0MPa. Operating speed ranges from 30-800mm/s. It uses a G1/2 port and a 36mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X120
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X120 replacement — usually within 7-8 hours.