This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X40, 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 SI100X40
The AirTAC Airtac SI100 Standard Cylinder SI100X40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 40mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke40 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X40
- 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 SI100X40
The AirTAC SI100X40 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 40mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa, operating at 30-800 mm/s through a G1/2 port. AirTAC replaced this legacy unit with the SAI100X40. This current-production direct maintains the exact ISO 15552 mounting interface, bore, stroke, force and port size, fitting existing fixtures perfectly.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors. For high-heat environments, Viton H seals raise the operating range to 0-150 C.
Airtac SI100 Standard Cylinder SI100X40 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X40 |
| Bore size | Ø100 mm |
| Stroke | 40 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 SAI100X40 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 SAI100X40 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 SI100X40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SI100X40 Is Used
Heavy-Duty Pressing
Applies 3927 N at 0.5 MPa for seating bearings and assembling large components over a short 40mm travel.
Pallet Diverter
Handles robust side-routing of heavy pallets using the 100mm bore force class and ISO 15552 profile mounts.
Material Stops
Acts as a high-force end-stop for heavy inventory rollers, utilizing the 3681 N pull force for retraction.
Replacing the Airtac SI100 Standard Cylinder SI100X40 with the SAI100X40
To replace the SI100X40, order the SAI100X40. Confirm the ISO 15552 mounting accessory (LB foot, FA/FB flange, CA/CB clevis, or TC trunnion) and the G1/2 port thread (PT, G, or NPT). This non-magnetic SKU cannot support position sensing; if switches are needed, select an SAI100X40S and use current AirTAC sensors. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while stepping up to 125mm provides 6136 N. Remember, a standard cylinder does not hold load without live air—the cushion only decelerates. For load holding on air loss, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X40
- ✓ 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 SI100X40 FAQ
Yes, the AirTAC SI100X40 is discontinued. The direct replacement is the SAI100X40. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 40mm stroke, G1/2 port, and mounting interface. You simply order the SAI equivalent.
This 100mm bore cylinder features a G1/2 air port and M20x1.5 rod thread. Theoretical forces are: 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; with a maximum force of 801 kgf at 1.0 MPa. It operates at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X40
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X40 replacement — usually within 7-8 hours.