This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX900, 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 SI100BX900
The AirTAC Airtac SI100 Standard Cylinder SI100BX900 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 900mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX900, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX900
- 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 SI100BX900
The AirTAC SI100BX900 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 900mm stroke. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100BX900 direct. This SUS304 stainless-rod variant drops into existing fixtures using identical ISO 15552 mounting dimensions.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Without a magnet, this SKU cannot take a sensor. For locked loads, use the SAIL or BSAI variants, as cushions only decelerate.
Airtac SI100 Standard Cylinder SI100BX900 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX900 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX900 |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAI100BX900 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 SAI100BX900 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 SI100BX900
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SI100BX900 Is Used
Long-Stroke Diversion
Drives large package pushers across wide conveyor belts, utilizing the 900mm stroke to clear heavy pallets from the main flow.
Washdown Actuation
Shifts heavy guard doors in humid washdown zones, leveraging the SUS304 stainless rod for corrosion resistance over the long 900mm travel.
Replacing the Airtac SI100 Standard Cylinder SI100BX900 with the SAI100BX900
To replace the SI100BX900, order the SAI100BX900. Confirm the ISO 15552 interface, 900mm stroke, G1/2 port, and mounting accessory. This non-magnetic SKU cannot accept position sensors. The SUS304 rod suits corrosive settings; Viton H seals allow 0-150 C. With a 900mm stroke, use external guides to prevent rod bending. Neighbouring bores: 80mm gives 2513 N [email protected], while 125mm gives 6136 N. Air cushions only decelerate; for load holding on air loss, use an external rod lock or pilot check valve, or specify SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX900
- ✓ 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 SI100BX900 FAQ
Yes, the SI100BX900 is discontinued. The direct replacement is the SAI100BX900. It shares the same ISO 15552 mounting interface, 100mm bore, 900mm stroke, output force, G1/2 port, and accessories, fitting directly into existing fixtures.
It features a G1/2 air port and 25mm rod. Force output is 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 max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX900
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX900 replacement — usually within 7-8 hours.