This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X290, 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 SI100X290
The AirTAC Airtac SI100 Standard Cylinder SI100X290 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 290mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X290, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X290
- 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 SI100X290
The AirTAC SI100X290 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 290 mm stroke. It delivers a push force of 3927 N at 0.5 MPa. The direct replacement is the SAI100X290, sharing the exact same interface, G1/2 port, and output. This non-magnetic SKU cannot accept a sensor.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked, and Viton H seals raise operating temps to 150 C.
Airtac SI100 Standard Cylinder SI100X290 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X290 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X290 |
| Bore size | Ø100 mm |
| Stroke | 290 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 SAI100X290 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 SAI100X290 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 SI100X290
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×290 | 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 SI100X290 Is Used
Heavy Press Clamping
Generates 3927 N of push force at 0.5 MPa to secure heavy metal workpieces in machining and press fixtures.
Pallet Diversion
Provides robust actuation to push heavy loaded pallets onto secondary packaging lines at high cycling rates.
Material Lift Gates
Raises and lowers substantial loading dock gates, benefiting from the 36 mm adjustable cushions at both ends.
Replacing the Airtac SI100 Standard Cylinder SI100X290 with the SAI100X290
To replace the SI100X290, order the SAI100X290 keeping the identical 290 mm stroke, 100 mm bore, and ISO 15552 mounting. Confirm your port thread (PT/G/NPT) and accessory type (LB, FA, TC, etc.). Because this SKU lacks the -S magnet, it cannot support CS1-B/DS1-B sensors; order a magnet-equipped SAI if position detection is needed. Sizing both ways: a neighbouring 80 mm bore yields 2513 N push at 0.5 MPa, while the 125 mm bore provides 6136 N. For this 290 mm stroke, ensure guide rails carry side loads to prevent rod bending. The air cushion only decelerates; it does not hold load on air loss, so use an external rod lock or pilot check valve for vertical safety.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X290
- ✓ 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 SI100X290 FAQ
Yes, the AirTAC SI100X290 is discontinued. The direct replacement is the SAI100X290. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 290 mm stroke, output force, G1/2 port, and mounting accessories.
This double-acting cylinder features a G1/2 port. It delivers a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa push is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X290
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X290 replacement — usually within 7-8 hours.