This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX110S, 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 SI100BX110S
The AirTAC Airtac SI100 Standard Cylinder SI100BX110S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 110mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX110S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke110 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX110S
- 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 SI100BX110S
The AirTAC SI100BX110S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore, 110mm stroke, and a SUS304 stainless steel piston rod. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100BX110S. This direct successor shares the exact G1/2 port, M20x1.5 thread, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and extended life. The original -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family introduces SAIL and BSAI lock variants absent in the SI line.
Airtac SI100 Standard Cylinder SI100BX110S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX110S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX110S |
| Bore size | Ø100 mm |
| Stroke | 110 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 SAI100BX110S 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 SAI100BX110S 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 SI100BX110S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×110 | 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 SI100BX110S Is Used
Heavy-Duty Pressing
Drives 3927 N at 0.5 MPa for seating bearings and assembling large components in automated machinery.
Pallet Diversion
Actuates heavy lane guides and stop gates on packaging lines, using the 110mm stroke to redirect full pallets.
Replacing the Airtac SI100 Standard Cylinder SI100BX110S with the SAI100BX110S
To replace the SI100BX110S, order the SAI100BX110S, confirming the ISO 15552 interface, 100mm bore, 110mm stroke, G1/2 port, and SUS304 rod. If downsizing, an 80mm bore yields 2513 N push at 0.5 MPa; if upsizing, a 125mm bore provides 6136 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or SAIL/BSAI lock variant for load holding. The -S magnet enables CS1-B/DS1-B sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX110S
- ✓ 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 SI100BX110S FAQ
Yes, the SI100BX110S is discontinued. The direct replacement is the SAI100BX110S, which maintains the same ISO 15552 mounting interface, 100mm bore, 110mm stroke, force, and G1/2 port.
It features a G1/2 port and delivers 3927 N push / 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and a theoretical max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX110S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX110S replacement — usually within 7-8 hours.