This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X248, 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 SI100X248
The AirTAC SI100 Standard Cylinder SI100X248 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 248mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X248, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke248 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X248
- 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 SI100X248
The AirTAC SI100X248 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 248mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the SAI100X248. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke, output force, port and accessories.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet so cannot take a sensor. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X248 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X248 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X248 |
| Bore size | Ø100 mm |
| Stroke | 248 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 SAI100X248 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 SAI100X248 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 SI100X248
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×248 | 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 SI100X248 Is Used
Heavy Press Clamping
Applies the 3927N push force at 0.5MPa to secure heavy metal components during machining or welding operations.
Pallet Diverting
Handles robust diverting of heavy goods pallets along packaging lines, utilizing the 100mm bore power and 248mm travel.
Replacing the Airtac SI100 Standard Cylinder SI100X248 with the SAI100X248
To replace the SI100X248, order the SAI100X248. Verify your ISO 15552 mounting accessories (LB, FA, TC, etc.), the G1/2 port thread (PT/G/NPT) and the 248mm stroke. Because 248mm is a nonstandard stroke, confirm lead times. This plain cylinder cannot 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. Neighbouring bores: an 80mm bore gives 2513N push at 0.5MPa, while a 125mm bore yields 6136N. Note: 248mm is under 300mm, so standard rod-bending side-load risks are lower, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X248
- ✓ 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 SI100X248 FAQ
Yes, the SI100X248 is discontinued. The direct replacement is the AirTAC SAI100X248. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 248mm stroke, G1/2 port, output force and mounting interface. You simply order the SAI100X248 to fit existing fixtures.
The bore is 100mm with a G1/2 air port and an M20x1.5 rod thread. Force ratings are: 3927N push and 3681N pull at 0.5MPa; 5497N push at 0.7MPa; 7068N push at 0.9MPa; and a theoretical max of 801kgf at 1.0MPa. Speed is 30-800mm/s, with 36mm adjustable air cushions at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X248
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X248 replacement — usually within 7-8 hours.