This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX290, 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 SI100AX290
The AirTAC Airtac SI100 Standard Cylinder SI100AX290 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 SAI100AX290, 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 → SAI100AX290
- 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 SI100AX290
The AirTAC SI100AX290 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 290 mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100AX290, matching the interface, force, and mounting.
This SKU features a SUS420J2 stainless piston rod but lacks a magnet, so it cannot accept a sensor. The SAI upgrade uses two Y-shaped piston seals for low start-up pressure. For load holding, use SAIL or BSAI lock variants.
Airtac SI100 Standard Cylinder SI100AX290 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX290 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX290 |
| 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 SAI100AX290 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 SAI100AX290 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 SI100AX290
| 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 SI100AX290 Is Used
Heavy Press Operations
Drives forming and stamping presses requiring 3927 N of push force at 0.5 MPa, utilizing the 290 mm stroke to cycle heavy tooling.
Pallet Diversion
Actuates heavy-duty lane diverters and stops on assembly lines, with the 100 mm bore providing enough thrust to shift loaded pallets.
Replacing the Airtac SI100 Standard Cylinder SI100AX290 with the SAI100AX290
To replace the SI100AX290, order the SAI100AX290. Verify the ISO 15552 mounting interface, 100 mm bore, 290 mm stroke, G1/2 port, and accessory type. This non-magnet SKU cannot take a switch; if sensing is needed, specify an SAI with a magnet. Neighbouring bores are 80 mm (2513 N push @0.5 MPa) and 125 mm (6136 N push @0.5 MPa). For 290 mm strokes, guide the load to prevent rod bending. A plain cylinder drifts on air loss; use a pilot check valve or SAIL/BSAI lock to hold loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX290
- ✓ 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 SI100AX290 FAQ
Yes, the AirTAC SI100AX290 is discontinued. The direct replacement is the SAI100AX290. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 290 mm stroke, force, G1/2 port, and mounting interface.
The G1/2 port bore delivers 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. It operates at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX290
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX290 replacement — usually within 7-8 hours.