This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX170S, 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 SI100AX170S
The AirTAC SI100 Standard Cylinder SI100AX170S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 170mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX170S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke170 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX170S
- 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 SI100AX170S
The AirTAC SI100AX170S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 170mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. AirTAC replaced this legacy unit with the SAI100AX170S, a direct upgrade sharing the exact ISO 15552 mounting interface, stroke, force, and porting.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SI100AX170S variant includes an SUS420J2 stainless steel rod (-A) and a piston magnet (-S) for legacy CS1-B/DS1-B sensors. Note that plain cylinders drift without live air; for load holding, explore the SAIL or BSAI lock variants.
Airtac SI100 Standard Cylinder SI100AX170S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX170S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX170S |
| Bore size | Ø100 mm |
| Stroke | 170 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 SAI100AX170S 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 SAI100AX170S 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 SI100AX170S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×170 | 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 SI100AX170S Is Used
Heavy-Duty Pressing
Applies up to 7068N of push force at 0.9MPa for seating bearings, stamping light components, or forming assemblies in automated machinery.
Pallet Diversion
Delivers robust 100mm bore thrust to index or divert heavy pallets along material handling lines, utilizing the 170mm stroke to clear the belt path.
Replacing the Airtac SI100 Standard Cylinder SI100AX170S with the SAI100AX170S
To replace the discontinued SI100AX170S, order the SAI100AX170S. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC, etc.), the G1/2 port thread (PT/G/NPT), and the -S magnet requirement. The SAI family uses current AirTAC switches instead of the legacy CS1-B/DS1-B. If you need to size both ways, a neighboring 80mm bore yields 2513N push at 0.5MPa, while a 125mm bore yields 6136N. Because this is a 170mm stroke, ensure adequate guide support to prevent rod-bending side loads. Remember that a standard cylinder does not hold load without live air; the cushion only decelerates. For secure holding, use an external pilot check valve, a rod lock, or the SAIL/BSAI lock variants. The SAIF variant (bores 32-100) offers a built-in 4M valve if space is tight.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX170S
- ✓ 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 SI100AX170S FAQ
Yes, the SI100AX170S is discontinued. The direct replacement is the SAI100AX170S. It is dimensionally interchangeable per ISO 15552, maintaining the same 100mm bore, 170mm stroke, G1/2 port, and mounting interface. The SAI features an upgraded piston seal for longer life.
This 100mm bore cylinder uses a G1/2 air port. Theoretical forces are: 3927N push and 3681N pull at 0.5MPa; 5497N push at 0.7MPa; 7068N push at 0.9MPa; and a maximum force of 801kgf at 1.0MPa. The rod is 25mm diameter with an M20x1.5 thread, and the -A suffix denotes a SUS420J2 stainless rod.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX170S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX170S replacement — usually within 7-8 hours.