This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX900S, 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 SI100AX900S
The AirTAC Airtac SI100 Standard Cylinder SI100AX900S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 900mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX900S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX900S
- 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 SI100AX900S
The AirTAC SI100AX900S is a discontinued double-acting ISO 15552 profile cylinder with a 900 mm stroke and a SUS420J2 stainless steel piston rod. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100AX900S. This direct upgrade shares the same G1/2 port, M20x1.5 thread, and ISO 15552 mounting dimensions, fitting existing fixtures perfectly.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure. With a 900 mm stroke, use external guides to prevent rod bending. The -S magnet works with CS1-B/DS1-B sensors; SAI uses current switches.
Airtac SI100 Standard Cylinder SI100AX900S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX900S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX900S |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAI100AX900S 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 SAI100AX900S 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 SI100AX900S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SI100AX900S Is Used
Heavy Press Clamping
Applies 3927 N of push force at 0.5 MPa to secure heavy steel assemblies during automated welding and machining operations.
Pallet Pusher System
Utilizes the 900 mm extended stroke to index loaded pallets along a conveyor line, requiring external guides to prevent rod bending.
Corrosive Fluid Handling
Leverages the SUS420J2 stainless steel rod option for reliable actuation in chemical testing rigs exposed to moisture and washdowns.
Replacing the Airtac SI100 Standard Cylinder SI100AX900S with the SAI100AX900S
To replace the SI100AX900S, order the SAI100AX900S. Verify the ISO 15552 mounting interface, 100 mm bore, 900 mm stroke, G1/2 port, and SUS420J2 rod. Neighbouring bores: 80 mm gives 2513 N [email protected], while 125 mm yields 6136 N. For the 900 mm stroke, add external guides to manage side-load and rod-bending risks. The -S magnet supports legacy CS1-B/DS1-B switches. Air cushions only decelerate; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX900S
- ✓ 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 SI100AX900S FAQ
Yes, the SI100AX900S is discontinued. The direct replacement is the SAI100AX900S. It shares the same ISO 15552 mounting interface, 100 mm bore, 900 mm stroke, output force, and G1/2 port, fitting directly into your existing fixtures.
This double-acting cylinder has a G1/2 port. It 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 theoretical max of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX900S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX900S replacement — usually within 7-8 hours.