This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X140SN, 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 SI100X140SN
The AirTAC Airtac SI100 Standard Cylinder SI100X140SN 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 SAI100X140SN, 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 → SAI100X140SN
- 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 SI100X140SN
The AirTAC SI100X140SN is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 140 mm stroke. It delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa, utilizing a G1/2 port and M20x1.5 rod thread. The direct replacement is the SAI100X140SN, matching the exact ISO 15552 mounting interface, bore, stroke, output force, and port size for seamless fixture integration.
This SAI upgrade features a revised piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The -S magnet supports legacy CS1-B/DS1-B sensors, while the -N NBR seal handles -20 to +70 C (a Viton H option raises this to 150 C). Note that SAI also adds SAIL, SAIF, and BSAI lock variants absent in the SI line.
Airtac SI100 Standard Cylinder SI100X140SN Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X140SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X140SN |
| 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 SAI100X140SN 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 SAI100X140SN 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 SI100X140SN
| 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 SI100X140SN Is Used
Heavy-Duty Pressing
Drives large stamping or forming dies with a 3927 N push at 0.5 MPa, utilizing the 140 mm stroke to cycle components securely.
Material Diversion
Actuates heavy-duty diverter arms on high-capacity packaging lines, benefiting from the adjustable 36 mm air cushions to brake the 140 mm travel.
Replacing the Airtac SI100 Standard Cylinder SI100X140SN with the SAI100X140SN
To replace the SI100X140SN, order the SAI100X140SN. Confirm the ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 port, and the -S magnet for current AirTAC switches. If you need more force than the 3927 N push at 0.5 MPa, step up to a 125 mm bore; if less is required, an 80 mm bore provides 2513 N. Because the 140 mm stroke is under 300 mm, rod bending is minimal, but always guide external loads. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding, specify the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X140SN
- ✓ 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 SI100X140SN FAQ
Yes, the SI100X140SN is discontinued. The direct replacement is the SAI100X140SN. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 140 mm stroke, G1/2 port, and mounting interface.
This double-acting cylinder uses a G1/2 port. It generates a push force of 3927 N and pull of 3681 N 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 SAI100X140SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X140SN replacement — usually within 7-8 hours.