This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX140, 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 SI100BX140
The AirTAC SI100 Standard Cylinder SI100BX140 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 140mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX140, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke140 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX140
- 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 SI100BX140
The AirTAC SI100BX140 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 140mm stroke. Delivering 3927 N push force at 0.5 MPa via a G1/2 port, its direct successor is the SAI100BX140. This current-production upgrade retains the same mounting interface, output force, and dimensions, fitting existing fixtures perfectly.
The SAI replacement features an upgraded piston seal with 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 sensors. The default carbon steel rod can be swapped for a SUS304 (-B) stainless rod for corrosion resistance. For applications needing load holding on air loss, the SAI family adds SAIL and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100BX140 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX140 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX140 |
| Bore size | Ø100 mm |
| Stroke | 140 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 SAI100BX140 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 SAI100BX140 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 SI100BX140
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×140 | 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 SI100BX140 Is Used
Heavy-Duty Pressing
Applies 5497 N of thrust at 0.7 MPa for seating bearings, stamping light components, or forming sheet metal in automated cells.
Pallet Diversion
Pushes heavy pallets off a main conveyor line using the 140mm stroke, leveraging the 100mm bore's robust 3681 N pull force.
Replacing the Airtac SI100 Standard Cylinder SI100BX140 with the SAI100BX140
To replace the discontinued SI100BX140, order the SAI100BX140. Verify the ISO 15552 mounting interface, 100mm bore, 140mm stroke, G1/2 port (PT/G/NPT thread options), and your specific mounting accessory. This SKU has no magnet, so it cannot take legacy CS1-B/DS1-B sensors; order an -S version if sensing is needed. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while a 125mm bore yields 6136 N. Note that a plain cylinder drifts without live air—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. At 140mm stroke, side-load is minimal, but always guide the load to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX140
- ✓ 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 SI100BX140 FAQ
Yes, the AirTAC SI100BX140 is discontinued. The direct replacement is the SAI100BX140. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 140mm stroke, G1/2 port, and mounting interface, but adds an upgraded two Y-shaped element piston seal.
This double-acting cylinder uses a G1/2 air port. It generates a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa, the push force is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX140
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX140 replacement — usually within 7-8 hours.