This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX175, 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 SI100AX175
The AirTAC Airtac SI100 Standard Cylinder SI100AX175 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 175mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX175, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX175
- 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 SI100AX175
The AirTAC SI100AX175 is a discontinued double-acting ISO 15552 profile cylinder featuring a 100mm bore and 175mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100AX175, retaining the exact ISO 15552 mounting interface, bore, stroke, and output force for seamless fixture integration. This specific SKU uses an SUS420J2 stainless steel piston rod for corrosion resistance. Note that it lacks a magnet and cannot accept a position switch. The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life.
The SAI family also adds SAIL, SAIF, and BSAI lock or valve variants absent in the legacy SI line. Operating pressure spans 0.15 to 1.0 MPa, with a Viton H seal option extending the temperature range up to 150 C.
Airtac SI100 Standard Cylinder SI100AX175 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX175 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX175 |
| Bore size | Ø100 mm |
| Stroke | 175 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 SAI100AX175 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 SAI100AX175 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 SI100AX175
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×175 | 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 SI100AX175 Is Used
Heavy Pressing
Drives robust actuators in automated assembly lines, utilizing the 3927 N push force at 0.5 MPa to seat heavy mechanical components firmly.
Pallet Diverting
Handles robust pallet routing and lifting gates in high-throughput material handling systems where the 100mm bore provides necessary mid-stroke thrust.
Replacing the Airtac SI100 Standard Cylinder SI100AX175 with the SAI100AX175
To replace the discontinued SI100AX175, order the SAI100AX175. Confirm the ISO 15552 mounting interface, the 100mm bore, the 175mm stroke, and the G1/2 port. Retain your original mounting accessory and rod-end thread M20x1.5. Because this SKU lacks a magnet (-S), it cannot support legacy CS1-B or DS1-B sensors; if sensing is needed, specify an SAI with a magnet. Sizing both ways: the neighboring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore yields 6136 N. A plain cylinder does not hold load without live air; the 36mm adjustable cushion only decelerates near stroke end. For load holding on air loss, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX175
- ✓ 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 SI100AX175 FAQ
Yes, the AirTAC SI100AX175 is discontinued. The direct replacement is the SAI100AX175. It features the same ISO 15552 mounting interface, 100mm bore, 175mm stroke, output force, and G1/2 port, fitting directly into existing fixtures.
The G1/2 port bore delivers a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa push 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 SAI100AX175
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX175 replacement — usually within 7-8 hours.