This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X172S, 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 SI100X172S
The AirTAC Airtac SI100 Standard Cylinder SI100X172S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 172mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X172S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke172 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X172S
- 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 SI100X172S
The AirTAC SI100X172S is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 172 mm stroke. It delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa, operating through a G1/2 port. The direct replacement is the SAI100X172S, matching the original bore, stroke, force, port and mounting fixtures.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF and BSAI lock variants absent from the SI line.
Airtac SI100 Standard Cylinder SI100X172S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X172S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X172S |
| Bore size | Ø100 mm |
| Stroke | 172 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 SAI100X172S 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 SAI100X172S 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 SI100X172S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×172 | 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 SI100X172S Is Used
Heavy Press Clamping
Ideal for holding heavy metal components during machining or pressing, utilizing the 3927 N push force to secure parts firmly against the fixture.
Large Product Diversion
Actuates heavy-duty diverter arms on packaging lines, using the 172 mm stroke to push bulky cartons or totes smoothly onto secondary conveyor belts.
Replacing the Airtac SI100 Standard Cylinder SI100X172S with the SAI100X172S
To replace the SI100X172S, order the SAI100X172S. Verify the ISO 15552 mounting interface, 100 mm bore, 172 mm stroke, G1/2 port (PT/G/NPT) and the -S magnet for CS1-B/DS1-B sensors. Sizing up or down: a 125 mm bore yields 6136 N push at 0.5 MPa, while an 80 mm bore gives 2513 N. Because this stroke is under 300 mm, side-load rod-bending risks are minimal, but always guide the load. A plain cylinder drifts on air loss; for load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X172S
- ✓ 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 SI100X172S FAQ
Yes, the AirTAC SI100X172S is discontinued. The direct replacement is the SAI100X172S. It is dimensionally interchangeable per ISO 15552, offering the same 100 mm bore, 172 mm stroke, output force, G1/2 port and mounting interface, so it fits existing fixtures perfectly.
This 100 mm bore double-acting cylinder uses a G1/2 port. The thrust ratings are: 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. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X172S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X172S replacement — usually within 7-8 hours.