This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X166, 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 SI100X166
The AirTAC Airtac SI100 Standard Cylinder SI100X166 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 166mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X166, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke166 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X166
- 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 SI100X166
The AirTAC SI100X166 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 166mm stroke. It delivers 3927N push force at 0.5MPa through a G1/2 port. The direct replacement is the SAI100X166, matching the exact interface, output and mounting.
This SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor.
Airtac SI100 Standard Cylinder SI100X166 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X166 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X166 |
| Bore size | Ø100 mm |
| Stroke | 166 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 SAI100X166 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 SAI100X166 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 SI100X166
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×166 | 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 SI100X166 Is Used
Heavy Press Clamping
Ideal for securing heavy automotive castings during CNC machining, utilizing the 3927N push force at 0.5MPa to hold parts firmly against cutting loads.
Pallet Lift Stations
Drives robust lifting mechanisms in packaging lines, where the 166mm stroke provides the precise elevation needed to index loaded pallets.
Large Gate Diversion
Actuates heavy flow-control gates in bulk material handling, relying on the 100mm bore power and adjustable 36mm cushions to soften end-of-stroke impacts.
Replacing the Airtac SI100 Standard Cylinder SI100X166 with the SAI100X166
To replace the SI100X166, order the SAI100X166. Verify your ISO 15552 mounting interface, G1/2 port, M20x1.5 rod thread and 166mm stroke. This non-magnet version cannot accept CS1-B/DS1-B sensors; order an SAI with the S suffix if position detection is needed. For sizing, the 80mm bore yields 2513N push at 0.5MPa, while the 125mm bore reaches 6136N. Air cushions decelerate the load but do not hold it; for drop prevention on air loss, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X166
- ✓ 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 SI100X166 FAQ
Yes, the SI100X166 is discontinued. The direct replacement is the AirTAC SAI100X166. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 166mm stroke, G1/2 port and mounting accessories.
The G1/2 port is fixed by the 100mm bore. At 0.5MPa it provides 3927N push and 3681N pull force. At 0.7MPa push is 5497N, and at 0.9MPa it is 7068N. The theoretical maximum force is 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X166
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X166 replacement — usually within 7-8 hours.