This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX30S, 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 SI100BX30S
The AirTAC Airtac SI100 Standard Cylinder SI100BX30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 30mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX30S
- 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 SI100BX30S
The AirTAC SI100BX30S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 30mm stroke. It features a SUS304 stainless steel piston rod and a built-in magnet for CS1-B/DS1-B switches. Delivering 3927 N push force at 0.5 MPa via a G1/2 port, it is replaced by the SAI100BX30S.
The SAI100BX30S is a direct upgrade sharing the exact ISO 15552 mounting interface, bore, and force. It uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure.
Airtac SI100 Standard Cylinder SI100BX30S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX30S |
| Bore size | Ø100 mm |
| Stroke | 30 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 SAI100BX30S 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 SAI100BX30S 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 SI100BX30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×30 | 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 SI100BX30S Is Used
High-Force Clamping
Secures heavy steel fabrications during machining using the full 3927 N push force at 0.5 MPa with reliable G1/2 air supply.
Pallet Stopping
Halts loaded pallets on conveyors; the SUS304 rod provides corrosion resistance in humid washdown environments.
Short-Stroke Pressing
Executes compact 30mm pressing and seating tasks for heavy assemblies where a 200 kg vertical lift margin is required.
Replacing the Airtac SI100 Standard Cylinder SI100BX30S with the SAI100BX30S
To replace the SI100BX30S, order the SAI100BX30S keeping the identical ISO 15552 mounting, G1/2 port, and 30mm stroke. This -B model uses a SUS304 stainless rod; the standard SI used carbon steel. The -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. If you need less force, the 80mm bore offers 2513 N push at 0.5 MPa; if you need more, the 125mm bore provides 6136 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. The SAIF variant adds a built-in valve for bores up to 100mm.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX30S
- ✓ 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 SI100BX30S FAQ
Yes, the SI100BX30S is discontinued. The direct replacement is the SAI100BX30S. It shares the identical ISO 15552 mounting interface, 100mm bore, 30mm stroke, G1/2 port, and output force, fitting existing fixtures perfectly.
The 100mm bore provides 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and 7068 N push at 0.9 MPa. The theoretical max force is 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s, and it uses a G1/2 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX30S replacement — usually within 7-8 hours.