This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX1200S, 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 SI100BX1200S
The AirTAC Airtac SI100 Standard Cylinder SI100BX1200S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1200mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX1200S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke1200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX1200S
- 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 SI100BX1200S
The AirTAC SI100BX1200S is a discontinued double-acting ISO 15552 profile cylinder featuring a 100mm bore, SUS304 stainless steel rod, and a 1200mm stroke. It delivers 3927 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI100BX1200S, a direct upgrade retaining the exact ISO 15552 mounting interface, G1/2 port size, and output force.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life. The original -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family also adds SAIL, SAIF, and BSAI lock variants absent from the SI line.
Airtac SI100 Standard Cylinder SI100BX1200S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX1200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX1200S |
| Bore size | Ø100 mm |
| Stroke | 1200 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 SAI100BX1200S 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 SAI100BX1200S 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 SI100BX1200S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×1200 | 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 SI100BX1200S Is Used
Long-Stroke Material Transfer
Drives heavy pallets across 1200mm conveyor lanes where the 3927 N push force at 0.5 MPa easily overcomes rolling friction.
Corrosive Environment Actuation
Utilizes the SUS304 stainless piston rod for reliable clamping and positioning in washdown or chemical manufacturing cells.
Replacing the Airtac SI100 Standard Cylinder SI100BX1200S with the SAI100BX1200S
To replace the SI100BX1200S, order the SAI100BX1200S, confirming the ISO 15552 mounting interface, the 100mm bore, 1200mm stroke, G1/2 port, and the SUS304 stainless rod (-B). If downward sizing is possible, an 80mm bore yields 2513 N push at 0.5 MPa; if more force is needed, a 125mm bore provides 6136 N. Because this is a 1200mm stroke, external guides are strongly recommended to prevent rod bending and side-load damage. A plain cylinder does not hold load without live air; the cushion only decelerates. For load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX1200S
- ✓ 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 SI100BX1200S FAQ
Yes, the SI100BX1200S is discontinued. The direct replacement is the SAI100BX1200S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 1200mm stroke, G1/2 port, and mounting fixtures.
The G1/2 port bore delivers 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. Operating pressure is 0.15-1.0 MPa with a speed of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX1200S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX1200S replacement — usually within 7-8 hours.