This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX140S, 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 SI100BX140S
The AirTAC Airtac SI100 Standard Cylinder SI100BX140S 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 SAI100BX140S, 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 → SAI100BX140S
- 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 SI100BX140S
The AirTAC SI100BX140S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 140 mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100BX140S, matching the interface, stroke and force.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This -B variant has a SUS304 stainless rod, and the -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100BX140S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX140S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX140S |
| 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 SAI100BX140S 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 SAI100BX140S 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 SI100BX140S
| 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 SI100BX140S Is Used
Heavy-Duty Pressing
Drives large stamping and forming fixtures requiring up to 2356 N of safe working force.
Clamp Actuation
Secures heavy workpieces on machining lines, utilizing the SUS304 stainless rod.
Replacing the Airtac SI100 Standard Cylinder SI100BX140S with the SAI100BX140S
To replace the SI100BX140S, order the SAI100BX140S. Verify the ISO 15552 mounting interface, 100 mm bore, 140 mm stroke, G1/2 port, and SUS304 rod. The built-in magnet (-S) supports CS1-B/DS1-B switches, though the SAI uses current AirTAC sensors. If downsizing, an 80 mm bore yields 2513 N at 0.5 MPa; if upsizing, a 125 mm bore provides 6136 N. For load holding on air loss, note the cushion only decelerates; use an external rod lock, pilot check valve, or SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX140S
- ✓ 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 SI100BX140S FAQ
Yes, the SI100BX140S is discontinued. The direct replacement is the SAI100BX140S. It is dimensionally interchangeable per ISO 15552, keeping the same 100 mm bore, 140 mm stroke, force, G1/2 port and mounting.
This double-acting cylinder uses a G1/2 port. It delivers 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 max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX140S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX140S replacement — usually within 7-8 hours.