This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X240, 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 SI100X240
The AirTAC Airtac SI100 Standard Cylinder SI100X240 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 240mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X240, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke240 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X240
- 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 SI100X240
The AirTAC SI100X240 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 240mm stroke, delivering 3927 N push force at 0.5 MPa. The direct replacement is the SAI100X240, which matches the original G1/2 port, M20x1.5 rod thread, and mounting interface exactly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note that this specific SKU lacks a magnet and cannot accept position sensors.
Airtac SI100 Standard Cylinder SI100X240 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X240 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X240 |
| Bore size | Ø100 mm |
| Stroke | 240 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 SAI100X240 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 SAI100X240 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 SI100X240
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×240 | 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 SI100X240 Is Used
Heavy Pressing
Drives large stamping or pressing fixtures requiring substantial thrust, utilizing the 7068 N output at 0.9 MPa.
Pallet Handling
Indexes heavy loaded pallets along conveyor lines, relying on the robust 25mm piston rod and 240mm travel.
Material Lifts
Raises and lowers bulky 200 kg material platforms vertically, safely operating within the 0.5 MPa working limits.
Replacing the Airtac SI100 Standard Cylinder SI100X240 with the SAI100X240
To replace the discontinued SI100X240, order the SAI100X240. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC, etc.), the G1/2 port thread (PT, G, or NPT), and the 240mm stroke. Because this non-magnetic SKU cannot host a CS1-B or DS1-B sensor, add external sensing if needed. For sizing, the 100mm bore yields 7068 N at 0.9 MPa; dropping to an 80mm bore gives 4523 N. A plain cylinder drifts without live air, so for load holding use an external pilot check valve or the SAIL/BSAI lock variant. At 240mm stroke, rod side-load is minimal, but always guide the load to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X240
- ✓ 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 SI100X240 FAQ
Yes, the AirTAC SI100X240 is discontinued. The direct replacement is the SAI100X240. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 240mm stroke, output force, G1/2 port, and mounting interface to fit existing fixtures perfectly.
This double-acting cylinder uses a G1/2 air port. The thrust ratings are 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 maximum theoretical force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X240
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X240 replacement — usually within 7-8 hours.