This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX180, 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 SI100BX180
The AirTAC Airtac SI100 Standard Cylinder SI100BX180 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 180mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX180, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX180
- 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 SI100BX180
The AirTAC SI100BX180 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 180mm stroke. It delivers a push force of 3927 N at 0.5 MPa (5497 N at 0.7 MPa) and features a G1/2 port. The direct replacement is the SAI100BX180, which shares the same interface, bore, stroke, output force and mounting fixtures.
This SKU includes a SUS304 stainless piston rod (B option) for corrosion resistance but lacks a magnet, so it cannot accept a CS1-B or DS1-B sensor. The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Airtac SI100 Standard Cylinder SI100BX180 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX180 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX180 |
| Bore size | Ø100 mm |
| Stroke | 180 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 SAI100BX180 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 SAI100BX180 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 SI100BX180
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×180 | 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 SI100BX180 Is Used
Heavy-Duty Pressing
Applies 5497 N of thrust at 0.7 MPa for seating bearings or forming light components in automated machinery.
Pallet Diversion
Drives heavy-duty routing gates or stoppers on conveyor lines, utilizing the 180mm stroke to clear large loads.
Replacing the Airtac SI100 Standard Cylinder SI100BX180 with the SAI100BX180
To replace the SI100BX180, order the SAI100BX180 and verify the ISO 15552 mounting interface, G1/2 port, and 180mm stroke. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B switches; order a magnet-equipped SAI if sensing is required. If you need higher force, the 125mm bore offers 6136 N push at 0.5 MPa; if lower force is acceptable, the 80mm bore provides 2513 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants for held loads. The 180mm stroke is under the 300mm side-load threshold, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX180
- ✓ 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 SI100BX180 FAQ
Yes, the SI100BX180 is discontinued. The direct replacement is the SAI100BX180. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 180mm stroke, force, G1/2 port, and mounting fixtures.
This double-acting cylinder has a G1/2 port. It generates a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa the push force 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 SAI100BX180
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX180 replacement — usually within 7-8 hours.