This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX180S, 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 SI100BX180S
The AirTAC SI100 Standard Cylinder SI100BX180S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 180mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX180S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX180S
- 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 SI100BX180S
The AirTAC SI100BX180S is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless piston rod and a built-in magnet. Delivering 3927 N push and 3681 N pull at 0.5 MPa, it is replaced by the SAI100BX180S. This direct successor shares the exact 100 mm bore, 180 mm stroke, G1/2 port, and ISO 15552 mounting interface, fitting existing fixtures perfectly.
The SAI upgrade utilizes an improved piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. Your -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI100 Standard Cylinder SI100BX180S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX180S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX180S |
| Bore size | Ø100 mm |
| Stroke | 180 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 SAI100BX180S 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 SAI100BX180S 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 SI100BX180S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×180 | 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 SI100BX180S Is Used
Heavy-Duty Pressing
Drives robust stamping and forming stations, utilizing the 5497 N push force at 0.7 MPa to seat bearings and assemble heavy mechanical components.
Pallet Diversion
Actuates high-mass pallet stops and routing gates on manufacturing lines, where the SUS304 rod provides corrosion resistance in humid washdown environments.
Replacing the Airtac SI100 Standard Cylinder SI100BX180S with the SAI100BX180S
To replace the SI100BX180S, order the SAI100BX180S. Verify your ISO 15552 mounting interface, G1/2 port thread (PT/G/NPT), and mounting accessory (LB, FA, TC, etc.). The -S magnet and -B SUS304 rod transfer directly. If sizing up or down, note the 80 mm bore yields 2513 N push at 0.5 MPa, while the 125 mm bore yields 6136 N. For this 180 mm stroke, side-load and rod-bending stresses are minimal, but always guide the load. A plain cylinder drifts on air loss; the air cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX180S
- ✓ 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 SI100BX180S FAQ
Yes, the SI100BX180S is discontinued. The direct replacement is the SAI100BX180S. It shares the same ISO 15552 mounting interface, 100 mm bore, 180 mm stroke, output force, and G1/2 port, fitting directly into your existing fixtures.
This double-acting cylinder has a G1/2 port. The force output is 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical maximum of 801 kgf at 1.0 MPa. The operating speed range is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX180S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX180S replacement — usually within 7-8 hours.