This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X115S, 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 SI100X115S
The AirTAC Airtac SI100 Standard Cylinder SI100X115S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 115mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X115S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke115 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X115S
- 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 SI100X115S
The AirTAC SI100X115S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 115mm stroke. It delivers 3927N push and 3681N pull at 0.5MPa, peaking at 801kgf. The direct replacement is the SAI100X115S, matching the G1/2 port, M20x1.5 thread, and ISO 15552 mounting interface.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants the SI lacked. The -S suffix means a magnet for CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X115S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X115S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X115S |
| Bore size | Ø100 mm |
| Stroke | 115 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 SAI100X115S 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 SAI100X115S 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 SI100X115S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×115 | 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 SI100X115S Is Used
Heavy-Duty Pressing
Drives actuators and stamps assemblies with 5497N of force at 0.7MPa, utilizing the 115mm stroke for precise component seating.
Pallet Diversion
Pushes heavy loaded pallets off a main conveyor line, using the G1/2 port for rapid 100mm bore actuation and cycle times.
Replacing the Airtac SI100 Standard Cylinder SI100X115S with the SAI100X115S
To replace the SI100X115S, order the SAI100X115S. It drops directly into existing ISO 15552 fixtures with the same 100mm bore, 115mm stroke, G1/2 port, and 25mm rod. Confirm your mounting (LB, FA, TC, etc.) and thread (PT/G/NPT). If sizing up or down, neighbouring bores are 80mm (3518N push @0.7MPa) and 125mm (8590N push @0.7MPa). Because this is a plain cylinder, it will not hold a load on air loss—the cushion only decelerates. For load holding, use the SAIL lock, BSAI clamp-lock, or an external pilot check valve. At 115mm stroke, side-load is minimal, but ensure guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X115S
- ✓ 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 SI100X115S FAQ
Yes, the SI100X115S is discontinued. The direct replacement is the SAI100X115S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 115mm stroke, G1/2 port, and mounting interface. The SAI features an upgraded piston seal for lower start-up pressure.
The 100mm bore uses a G1/2 air port and a 25mm rod. Theoretical forces are: 3927N push / 3681N pull at 0.5MPa; 5497N push at 0.7MPa; 7068N push at 0.9MPa; and a maximum of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X115S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X115S replacement — usually within 7-8 hours.