This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX660S, 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 SI100BX660S
The AirTAC Airtac SI100 Standard Cylinder SI100BX660S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 660mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX660S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke660 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX660S
- 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 SI100BX660S
The AirTAC SI100BX660S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 660mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100BX660S, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, force, port and accessories.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -B suffix specifies a SUS304 stainless piston rod for corrosion resistance, while the -S magnet works with legacy CS1-B/DS1-B sensors. For load holding, note that a plain cylinder drifts on air loss; the cushion only decelerates. Use an external rod lock or pilot check valve.
Airtac SI100 Standard Cylinder SI100BX660S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX660S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX660S |
| Bore size | Ø100 mm |
| Stroke | 660 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 SAI100BX660S 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 SAI100BX660S 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 SI100BX660S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×660 | 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 SI100BX660S Is Used
Heavy Material Transfer
Drives robust pallet stops and heavy product diverters on high-capacity packaging lines using its 3927 N push force.
Large Press Ejection
Ejects heavy formed parts from large presses, relying on the SUS304 rod for corrosion resistance in oily environments.
Replacing the Airtac SI100 Standard Cylinder SI100BX660S with the SAI100BX660S
To replace the SI100BX660S, order the SAI100BX660S. Confirm the ISO 15552 mounting interface, the G1/2 port, the M20x1.5 rod thread, and your mounting accessory (LB, FA, TC, etc.). The -S magnet enables current AirTAC switches, and the -B rod is SUS304 stainless. Sizing both ways: this 100mm bore yields 3927 N push at 0.5 MPa; dropping to an 80mm bore gives 2513 N, while a 125mm bore gives 6136 N. Because the 660mm stroke is long, use an external guide to prevent rod bending and side-load damage. For applications needing locked positions without live air, explore the SAIL or BSAI lock variants, as standard cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX660S
- ✓ 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 SI100BX660S FAQ
Yes, the SI100BX660S is discontinued. The direct replacement is the SAI100BX660S. It shares the same ISO 15552 mounting interface, 100mm bore, 660mm stroke, force, and G1/2 port, fitting directly into existing fixtures.
The G1/2 port is fixed by the 100mm bore. It provides a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa push 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 SAI100BX660S
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