This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X75N, 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 SI100X75N
The AirTAC Airtac SI100 Standard Cylinder SI100X75N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 75mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X75N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X75N
- 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 SI100X75N
The AirTAC SI100X75N is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 75 mm stroke. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100X75N. This direct upgrade keeps the same G1/2 port, M20x1.5 rod thread, and mounting interface. The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure and long life. It also adds SAIL, SAIF, and BSAI variants absent from the SI line.
Because this SKU lacks the -S magnet, it cannot accept a position sensor. The NBR seals support -20 to +70 C, with a Viton H option available. Note that standard cylinders drift without live air; use an external rod lock or SAIL/BSAI variant for load holding.
Airtac SI100 Standard Cylinder SI100X75N Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X75N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X75N |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAI100X75N 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 SAI100X75N 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 SI100X75N
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SI100X75N Is Used
Heavy Pressing
Applies 3927 N of thrust at 0.5 MPa for seating heavy components and pressing bearings in automated assembly lines.
Pallet Diversion
Handles robust 75 mm strokes to push heavy loaded pallets off a main conveyor belt onto routing lanes.
Replacing the Airtac SI100 Standard Cylinder SI100X75N with the SAI100X75N
To replace the SI100X75N, order the SAI100X75N. Verify the ISO 15552 mounting interface, 100 mm bore, 75 mm stroke, G1/2 port, and NBR seals. Since this specific SKU has no -S suffix, it cannot support magnetic sensing; if switches are needed, select an SAI model with the magnet option and use current AirTAC sensors. Remember that a standard cylinder does not hold load without air; for drop protection, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X75N
- ✓ 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 SI100X75N FAQ
Yes, the AirTAC SI100X75N is discontinued. The direct replacement is the SAI100X75N. It shares the same ISO 15552 mounting interface, 100 mm bore, 75 mm stroke, output force, and G1/2 port, fitting existing fixtures perfectly.
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 maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X75N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X75N replacement — usually within 7-8 hours.