This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX130S, 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.

The AirTAC Airtac SI100 Standard Cylinder SI100BX130S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 130mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX130S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100BX130S is a discontinued double-acting ISO 15552 profile cylinder featuring a 100mm bore, 130mm stroke, and a SUS304 stainless steel rod. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100BX130S. This direct upgrade matches the G1/2 port, M20x1.5 thread, and mounting interface. The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure, and accepts CS1-B/DS1-B sensors via its built-in magnet.
The SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the SI line. Note that plain cylinders drift on air loss; cushions only decelerate.
| Model | Airtac SI100 Standard Cylinder SI100BX130S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX130S |
| Bore size | Ø100 mm |
| Stroke | 130 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 SAI100BX130S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100BX130S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×130 | 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).
Drives 3927 N at 0.5 MPa for securely seating large bearings and heavy mechanical components in automated machining lines.
The SUS304 rod option provides corrosion resistance for food processing or washdown environments requiring strict hygiene standards.
To replace the SI100BX130S, order the SAI100BX130S. Verify the ISO 15552 mounting interface, 130mm stroke, G1/2 port, and the -B SUS304 rod option. The -S magnet enables CS1-B/DS1-B switches, though the SAI replacement uses current AirTAC sensors. At 0.5 MPa it yields 3927 N push and 3681 N pull; if undersized, the 125mm bore offers 6136 N push. For load holding on air loss, the cushion only decelerates, so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
Yes, the SI100BX130S is discontinued. The direct replacement is the SAI100BX130S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 130mm stroke, G1/2 port, and mounting interface.
The G1/2 port bore delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a maximum theoretical force of 801 kgf at 1.0 MPa.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX130S replacement — usually within 7-8 hours.