This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX170, 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 SI100BX170
The AirTAC Airtac SI100 Standard Cylinder SI100BX170 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 SAI100BX170, 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 → SAI100BX170
- 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 SI100BX170
The AirTAC SI100BX170 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 170mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the SAI100BX170. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, output force, and accessories.
The SAI100BX170 upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. Because this specific SKU lacks a magnet (-S), it cannot accept position switches like the legacy CS1-B/DS1-B. The SUS304 stainless rod (-B) resists corrosion.
Airtac SI100 Standard Cylinder SI100BX170 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX170 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX170 |
| 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 SAI100BX170 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 SAI100BX170 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 SI100BX170
| 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 SI100BX170 Is Used
Heavy-Duty Pressing
Applies the 3927N push force at 0.5MPa for seating bearings or forming components in automated machining lines.
Corrosive Environment Actuation
Leverages the SUS304 stainless rod for reliable clamping in washdown areas or humid production facilities.
Replacing the Airtac SI100 Standard Cylinder SI100BX170 with the SAI100BX170
To replace the SI100BX170, order the SAI100BX170. Verify your ISO 15552 mounting accessories (LB, FA, TC, etc.), the G1/2 air port, and the 170mm stroke. Because this is a no-magnet variant, it cannot support sensors; if sensing is needed, specify an SAI100X170S. Sizing both ways: the 100mm bore yields 3927N push at 0.5MPa (5497N at 0.7MPa), while the neighbouring 80mm bore provides 2513N at 0.5MPa. Note that a plain cylinder does not hold load on air loss; the cushion only decelerates. For secure holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX170
- ✓ 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 SI100BX170 FAQ
Yes, the SI100BX170 is discontinued. The direct replacement is the SAI100BX170. It shares the same ISO 15552 mounting interface, 100mm bore, 170mm stroke, output force, and G1/2 port, fitting existing fixtures perfectly.
It features a G1/2 air port. The force ratings are: 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX170
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX170 replacement — usually within 7-8 hours.