This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX240, 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 SI100AX240
The AirTAC Airtac SI100 Standard Cylinder SI100AX240 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 SAI100AX240, 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 → SAI100AX240
- 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 SI100AX240
The AirTAC SI100AX240 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 240 mm stroke. Built with an extruded aluminum barrel and adjustable air cushions, it delivers a push force of 3927 N at 0.5 MPa. AirTAC replaced this legacy unit with the SAI100AX240, a direct upgrade retaining the exact ISO 15552 mounting interface, G1/2 port, and M20x1.5 rod thread.
This SKU lacks the -S magnet suffix and cannot accept a position switch. The SAI upgrade features an improved piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The -A rod code specifies a SUS420J2 stainless piston rod for corrosion resistance.
Airtac SI100 Standard Cylinder SI100AX240 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX240 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX240 |
| 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 SAI100AX240 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 SAI100AX240 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 SI100AX240
| 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 SI100AX240 Is Used
Heavy-Duty Pressing
Drives large forming or stamping presses requiring 3927 N of push force at 0.5 MPa, utilizing the 240 mm stroke to seat heavy components.
Pallet Handling
Indexes loaded pallets on transfer lines where the robust 100 mm bore and SUS420J2 stainless rod withstand demanding industrial environments.
Bulk Material Diverting
Actuates large-scale diverters or gates on high-capacity conveyors, moving substantial loads with a safe working capacity near 2356 N.
Replacing the Airtac SI100 Standard Cylinder SI100AX240 with the SAI100AX240
To replace the SI100AX240, order the SAI100AX240. Confirm the ISO 15552 mounting fixture, 100 mm bore, 240 mm stroke, G1/2 port (PT/G/NPT), and mounting accessory. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is required, select an SAI model with the S suffix. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa, while the neighboring 80 mm bore offers 2513 N. For stroke lengths of 240 mm, ensure adequate guide support to prevent rod bending under side loads. Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX240
- ✓ 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 SI100AX240 FAQ
Yes, the SI100AX240 is discontinued. The direct replacement is the AirTAC SAI100AX240. It shares the identical ISO 15552 mounting interface, 100 mm bore, 240 mm stroke, output force, and G1/2 port, fitting directly into existing fixtures.
The 100 mm bore features a G1/2 air port and an M20x1.5 rod thread. It generates 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and a maximum theoretical force of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX240
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX240 replacement — usually within 7-8 hours.