This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X245, 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 SI100X245
The AirTAC SI100 Standard Cylinder SI100X245 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 245mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X245, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke245 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X245
- 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 SI100X245
The AirTAC SI100X245 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 245mm stroke. It delivers 3927N push and 3681N pull at 0.5MPa, peaking at 801kgf. The direct replacement is the SAI100X245, matching the G1/2 port, M20x1.5 thread, and 36mm cushions exactly.
The SAI upgrade uses two Y-shaped piston seals for low start-up pressure and long life. Because this SKU lacks the -S magnet, it cannot take a sensor. For high heat, choose the Viton H seal option.
Airtac SI100 Standard Cylinder SI100X245 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X245 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X245 |
| Bore size | Ø100 mm |
| Stroke | 245 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 SAI100X245 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 SAI100X245 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 SI100X245
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×245 | 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 SI100X245 Is Used
Heavy Press Clamping
Secures large metal castings in machining fixtures, using the 3927N push force at 0.5MPa to hold components rigidly against cutting forces.
Automated Sorter Diverter
Actuates a heavy diverter arm to route bulky packages, benefiting from the 36mm adjustable air cushions to decelerate the 25mm rod smoothly at stroke ends.
Replacing the Airtac SI100 Standard Cylinder SI100X245 with the SAI100X245
To replace the SI100X245, order the SAI100X245. It drops into existing fixtures via the ISO 15552 mounting interface, preserving the 100mm bore, 245mm stroke, G1/2 port, and 5497N output at 0.7MPa. If you need more force, the 125mm bore offers 8590N; if less, the 80mm bore provides 3518N. Since this is a non-magnet SKU, you cannot mount CS1-B or DS1-B sensors; add the -S suffix for sensing. For load holding on air loss, use the SAIL or BSAI lock variant, as standard cushions only decelerate. At 245mm stroke, side-load is minimal, but ensure guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X245
- ✓ 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 SI100X245 FAQ
Yes, the SI100X245 is discontinued. The direct replacement is the SAI100X245. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 245mm stroke, output force, G1/2 port, and mounting accessories.
This 100mm bore cylinder features a G1/2 air port. It generates 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X245
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X245 replacement — usually within 7-8 hours.