This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX260, 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 SI100BX260
The AirTAC Airtac SI100 Standard Cylinder SI100BX260 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 260mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX260, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke260 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX260
- 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 SI100BX260
The AirTAC SI100BX260 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 260 mm stroke. The direct replacement is the SAI100BX260, which shares the same G1/2 port, M20x1.5 rod thread, and 36 mm cushions.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This specific SKU lacks a magnet (-S), so it cannot accept position switches. The SUS304 stainless rod (-B) offers corrosion resistance, and a Viton H seal option extends heat tolerance to 150 C.
Airtac SI100 Standard Cylinder SI100BX260 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX260 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX260 |
| Bore size | Ø100 mm |
| Stroke | 260 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 SAI100BX260 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 SAI100BX260 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 SI100BX260
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×260 | 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 SI100BX260 Is Used
Heavy-Duty Pressing
Drives large stamping and forming presses requiring up to 5497 N of push force at 0.7 MPa, utilizing the 260 mm stroke to fully cycle heavy tooling.
Package Diversion
Actuates heavy-duty diverter arms on high-throughput packaging lines, moving bulky goods with a 30-800 mm/s speed range and 36 mm cushions.
Replacing the Airtac SI100 Standard Cylinder SI100BX260 with the SAI100BX260
To replace the SI100BX260, order the SAI100BX260. It is dimensionally interchangeable per the ISO 15552 mounting interface, matching the exact 100 mm bore, 260 mm stroke, 3927 N force, G1/2 port, and mounting accessories. If you need more force, the neighbouring 125 mm bore provides 6136 N push at 0.5 MPa. This non-magnetic SKU cannot take CS1-B or DS1-B sensors; order an -S version if sensing is required. Because the stroke is over 200 mm, ensure guide rails carry side loads to prevent rod bending. Note that a plain cylinder drifts on air loss; for load holding, use the SAIL or BSAI lock variant, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX260
- ✓ 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 SI100BX260 FAQ
Yes, the AirTAC SI100BX260 is discontinued. The direct replacement is the SAI100BX260. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 260 mm stroke, output force, G1/2 port, and mounting interface.
The 100 mm bore features a G1/2 air port and an M20x1.5 rod thread. It generates 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX260
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX260 replacement — usually within 7-8 hours.