This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X730S, 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 SI100X730S
The AirTAC Airtac SI100 Standard Cylinder SI100X730S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 730mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X730S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke730 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X730S
- 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 SI100X730S
The AirTAC SI100X730S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 730 mm stroke. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is directly replaced by the SAI100X730S. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, force and accessories, fitting existing fixtures perfectly.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL, SAIF and BSAI lock variants the SI lacked. Your -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X730S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X730S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X730S |
| Bore size | Ø100 mm |
| Stroke | 730 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 SAI100X730S 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 SAI100X730S 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 SI100X730S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×730 | 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 SI100X730S Is Used
Heavy Material Transfer
Drives large pallets or heavy fixtures over 730 mm on assembly lines, utilising the 3927 N push force to shift substantial loads smoothly between stations.
Large Press Ejection
Ejects formed parts from heavy machinery, where the long stroke ensures components are pushed completely clear of the tooling area for safe robotic retrieval.
Replacing the Airtac SI100 Standard Cylinder SI100X730S with the SAI100X730S
To replace the SI100X730S, order the SAI100X730S. Confirm the ISO 15552 mounting interface, the G1/2 air port, and your mounting accessory (LB, FA, CA, TC, etc.). The -S magnet means it accepts CS1-B/DS1-B switches, though the SAI replacement uses current AirTAC sensors. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa, while the neighbouring 80 mm bore gives 2513 N. Because this is a 730 mm stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X730S
- ✓ 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 SI100X730S FAQ
Yes, the SI100X730S is discontinued. The direct replacement is the SAI100X730S. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 730 mm stroke, G1/2 port, and mounting interface. You simply order the SAI equivalent.
The 100 mm bore provides 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 speed is 30-800 mm/s. It uses a G1/2 port and a 36 mm adjustable air cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X730S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X730S replacement — usually within 7-8 hours.