This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX750S, 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 SI100BX750S
The AirTAC Airtac SI100 Standard Cylinder SI100BX750S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 750mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX750S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX750S
- 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 SI100BX750S
The AirTAC SI100BX750S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 750mm stroke. It features a SUS304 stainless piston rod (-B), a built-in magnet (-S) for CS1-B/DS1-B sensors, and delivers 3927N push force at 0.5MPa via a G1/2 port. AirTAC replaced this legacy unit with the SAI100BX750S.
The SAI100BX750S is a direct replacement matching the ISO 15552 mounting interface, bore, stroke, output force, and port size. It upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100BX750S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX750S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX750S |
| Bore size | Ø100 mm |
| Stroke | 750 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 SAI100BX750S 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 SAI100BX750S 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 SI100BX750S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×750 | 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 SI100BX750S Is Used
Heavy Material Transfer
Drives large pallets or heavy workpieces along assembly lines using its 3927N push force at 0.5 MPa, with the 750mm stroke providing extended reach between processing stations.
Vertical Press Dampening
Utilizes the adjustable 36mm air cushions at both ends to safely decelerate heavy 200kg vertical loads near stroke end, requiring external guides to manage the long 750mm rod extension.
Automated Storage Retrieval
Actuates large storage doors or lifting platforms in humid washdown environments, leveraging the SUS304 stainless rod (-B) for maximum corrosion resistance over the 750mm travel.
Replacing the Airtac SI100 Standard Cylinder SI100BX750S with the SAI100BX750S
To replace the SI100BX750S, order the SAI100BX750S direct: confirm the ISO 15552 mounting interface, 100mm bore, 750mm stroke, G1/2 port (PT/G/NPT thread options), and the -S magnet for current AirTAC switches. If downsizing, an 80mm bore yields 2513N push at 0.5MPa; if upsizing, a 125mm bore yields 6136N. Because this is a 750mm stroke, use external guides to prevent rod-bending and side-load damage. 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 variant for load holding. The -B rod provides SUS304 corrosion resistance, and a Viton H seal raises temperatures to 150C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX750S
- ✓ 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 SI100BX750S FAQ
Yes, the AirTAC SI100BX750S is discontinued. The direct replacement is the SAI100BX750S. It shares the same ISO 15552 mounting interface, 100mm bore, 750mm stroke, output force, G1/2 port, and accessories, fitting directly into existing fixtures.
The G1/2 port bore delivers 3927N push and 3681N pull at 0.5 MPa, 5497N push at 0.7 MPa, 7068N push at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 25mm rod and M20x1.5 thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX750S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX750S replacement — usually within 7-8 hours.