This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX100, 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 SI100BX100
The AirTAC Airtac SI100 Standard Cylinder SI100BX100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX100
- 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 SI100BX100
The AirTAC SI100BX100 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 100 mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The SUS304 stainless rod (B option) resists corrosion. As this SKU lacks the -S magnet, it cannot accept a position switch.
Order the SAI100BX100 as the direct replacement. It shares the same ISO 15552 mounting interface, bore, stroke, force, and port. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure.
Airtac SI100 Standard Cylinder SI100BX100 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX100 |
| Bore size | Ø100 mm |
| Stroke | 100 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 SAI100BX100 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 SAI100BX100 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 SI100BX100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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 SI100BX100 Is Used
Heavy-Duty Pressing
Applies up to 5497 N at 0.7 MPa for seating bearings and forming components in automated machining lines.
High-Force Diverting
Actuates heavy-duty diverters and sorting gates requiring sustained push energy and a 25 mm rod.
Replacing the Airtac SI100 Standard Cylinder SI100BX100 with the SAI100BX100
To replace the SI100BX100, specify the SAI100BX100 and confirm the ISO 15552 mounting fixture, 100 mm stroke, G1/2 port (PT/G/NPT), and clevis/flange accessory. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if switching is needed. For sizing, the 80 mm bore yields 2513 N push at 0.5 MPa, while the 125 mm bore yields 6136 N. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants. The SAIF variant integrates a 4M valve for bores up to 100 mm.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX100
- ✓ 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 SI100BX100 FAQ
Yes, the SI100BX100 is discontinued. The direct replacement is the SAI100BX100. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 100 mm bore, 100 mm stroke, force, and G1/2 port.
The G1/2 port bore delivers a push 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 maximum theoretical force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX100
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX100 replacement — usually within 7-8 hours.