This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX75SN, 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 SI100AX75SN
The AirTAC SI100 Standard Cylinder SI100AX75SN 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 SAI100AX75SN, 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 → SAI100AX75SN
- 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 SI100AX75SN
The AirTAC SI100AX75SN is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 75 mm stroke. It delivers a push force of 3927 N at 0.5 MPa through its G1/2 port. The direct replacement is the SAI100AX75SN, which matches the original bore, stroke, output force, port size and mounting interface.
The SAI upgrade introduces a refined piston seal featuring two Y-shaped one-way elements for extended lifespan and lower start-up pressure. This specific SI unit includes the -A SUS420J2 stainless steel rod for corrosion resistance and the -N NBR seal (operating -20 to +70 C). It retains the original magnet for CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100AX75SN Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX75SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX75SN |
| 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 SAI100AX75SN 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 SAI100AX75SN 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 SI100AX75SN
| 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 SI100AX75SN Is Used
Heavy-Duty Pressing
Applies 3927 N of thrust at 0.5 MPa for seating bearings, stamping components, or forming light-gauge metal in automated machinery.
Pallet Diversion
Actuates heavy lane guides or pop-up stops on high-throughput packaging lines, handling the inertia of fully loaded product pallets.
Vertical Lift Gates
Raises and lowers material handling gates weighing up to 200 kg, utilizing the 75 mm stroke for compact, high-force actuation.
Replacing the Airtac SI100 Standard Cylinder SI100AX75SN with the SAI100AX75SN
To replace the SI100AX75SN, order the SAI100AX75SN. Verify that the ISO 15552 mounting interface, 100 mm bore, 75 mm stroke, G1/2 port, and mounting accessories match your fixture. This unit features the -A SUS420J2 stainless rod and -N NBR seals; confirm these options on the SAI order. If you need higher force, the neighbouring 125 mm bore provides 6136 N push at 0.5 MPa, while dropping to an 80 mm bore yields 2513 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding consider the SAIL or BSAI lock variants, or an external pilot check valve. The built-in magnet supports legacy CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX75SN
- ✓ 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 SI100AX75SN FAQ
Yes, the SI100AX75SN is discontinued. The direct replacement is the SAI100AX75SN. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 75 mm stroke, G1/2 port, and mounting interface for a seamless fixture upgrade.
This double-acting cylinder features a G1/2 air port. It delivers a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa the push force is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX75SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX75SN replacement — usually within 7-8 hours.