This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X175STC, 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 SI100X175STC
The AirTAC Airtac SI100 Standard Cylinder SI100X175STC 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 SAI100X175STC, 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 → SAI100X175STC
- 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 SI100X175STC
The AirTAC SI100X175STC is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 175 mm stroke. Delivering 3927 N push force at 0.5 MPa, it features a TC trunnion mount, a G1/2 port, and a built-in magnet for CS1-B/DS1-B sensors. The direct replacement is the SAI100X175STC, which matches the original ISO 15552 mounting interface, bore, stroke, force, and port exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. For applications needing load holding, the SAI family adds SAIL and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X175STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X175STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X175STC |
| 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 SAI100X175STC 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 SAI100X175STC 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 SI100X175STC
| 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 SI100X175STC Is Used
Heavy-Duty Pressing
Applies the 3927 N push force at 0.5 MPa to seat bearings and assemble heavy mechanical components securely.
Pallet Diverting
Uses the TC trunnion mount to handle high side loads when actuating large diverters in material handling lines.
Replacing the Airtac SI100 Standard Cylinder SI100X175STC with the SAI100X175STC
To replace the SI100X175STC, order the SAI100X175STC and confirm the ISO 15552 TC trunnion interface, 100 mm bore, 175 mm stroke, G1/2 port, and the -S magnet for current AirTAC switches. If you need to resize, neighbouring bores like 80 mm or 125 mm offer different force classes, with this 100 mm bore providing 5497 N at 0.7 MPa. A plain cylinder does not hold load on air loss; the cushion only decelerates, so use an external rod lock or pilot check valve for holding. The SAIL or BSAI lock variants are ideal if you need integrated holding. At 175 mm stroke, side-load and rod-bending risks are minimal, but ensure proper guide alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X175STC
- ✓ 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 SI100X175STC FAQ
Yes, the SI100X175STC is discontinued. The direct replacement is the SAI100X175STC. It is dimensionally interchangeable per ISO 15552, matching the 100 mm bore, 175 mm stroke, G1/2 port, TC mount, and force exactly.
It features a G1/2 port and 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 max of 801 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X175STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X175STC replacement — usually within 7-8 hours.