This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X175, 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 SI100X175
The AirTAC Airtac SI100 Standard Cylinder SI100X175 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 SAI100X175, 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 → SAI100X175
- 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 SI100X175
The AirTAC SI100X175 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 175 mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa, operating through a G1/2 port with a 25 mm rod. AirTAC replaced this legacy unit with the SAI100X175, a direct upgrade retaining the exact ISO 15552 mounting interface, force, and dimensions.
The SAI replacement introduces an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. For load holding, note that a standard cylinder drifts without live air; the cushion only decelerates. Use the SAIL or BSAI lock variants if needed.
Airtac SI100 Standard Cylinder SI100X175 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X175 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X175 |
| 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 SAI100X175 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 SAI100X175 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 SI100X175
| 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 SI100X175 Is Used
Heavy Press Clamping
Applies 5497 N of thrust at 0.7 MPa to secure large metal castings or heavy plates during machining and pressing operations.
Replacing the Airtac SI100 Standard Cylinder SI100X175 with the SAI100X175
To replace the SI100X175, order the SAI100X175. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), the G1/2 port thread (PT, G, or NPT), and the M20x1.5 rod end. Because this SKU lacks the -S magnet suffix, it cannot accept CS1-B/DS1-B sensors; order a magnet-equipped SAI if position sensing is required. Sizing both ways: the 100 mm bore yields 5497 N at 0.7 MPa, while the neighbouring 80 mm bore yields 3518 N. For any stroke over 300 mm, add external guides to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X175
- ✓ 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 SI100X175 FAQ
Yes, the AirTAC SI100X175 is discontinued. The direct replacement is the SAI100X175. It shares the identical ISO 15552 mounting interface, 100 mm bore, 175 mm stroke, output force, and G1/2 port, fitting directly into existing fixtures.
At 0.5 MPa it provides 3927 N push and 3681 N pull. 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. Operating speed ranges from 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X175
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X175 replacement — usually within 7-8 hours.