This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X403SN, 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 SI100X403SN
The AirTAC Airtac SI100 Standard Cylinder SI100X403SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 403mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X403SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke403 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X403SN
- 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 SI100X403SN
The AirTAC SI100X403SN is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 403 mm stroke. Delivering 3927 N push force at 0.5 MPa, it features a G1/2 port, M20x1.5 rod thread, and adjustable air cushions. The direct replacement is the SAI100X403SN, matching the bore, stroke, force, port, and mounting interface exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The NBR seal handles -20 to +70 C, while Viton H extends this to 150 C. This -S magnet model fits legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X403SN Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X403SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X403SN |
| Bore size | Ø100 mm |
| Stroke | 403 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 SAI100X403SN 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 SAI100X403SN 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 SI100X403SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×403 | 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 SI100X403SN Is Used
Heavy-Duty Pressing
Applies 3927 N of thrust at 0.5 MPa for seating bearings, stamping light-gauge materials, or assembling heavy mechanical components.
Pallet Diversion
Uses the 403 mm stroke to push heavy pallets onto secondary packaging lines, requiring external guides to absorb side-load impacts.
Replacing the Airtac SI100 Standard Cylinder SI100X403SN with the SAI100X403SN
To replace the SI100X403SN, order the SAI100X403SN, confirming the ISO 15552 mounting interface, 100 mm bore, 403 mm stroke, G1/2 port, and your specific mounting accessory. The -S magnet works with CS1-B/DS1-B switches, while the -N denotes the standard NBR seal. If you need higher force, the neighboring 125 mm bore yields 6136 N push at 0.5 MPa; if sizing down, the 80 mm bore provides 2513 N. Because this is a 403 mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts without live air; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X403SN
- ✓ 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 SI100X403SN FAQ
Yes, the AirTAC SI100X403SN is discontinued. The direct replacement is the SAI100X403SN. It is dimensionally interchangeable per ISO 15552, matching the 100 mm bore, 403 mm stroke, G1/2 port, and mounting fixtures perfectly.
This 100 mm bore cylinder features a G1/2 air 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 maximum force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X403SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X403SN replacement — usually within 7-8 hours.