This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X165STC, 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 SI100X165STC
The AirTAC Airtac SI100 Standard Cylinder SI100X165STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 165mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X165STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X165STC
- 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 SI100X165STC
The AirTAC SI100X165STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 165mm stroke. It delivers 3927 N push force at 0.5 MPa via a G1/2 port. The direct replacement is the SAI100X165STC, matching the bore, stroke, force, and TC trunnion mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants lacking in the SI line. Your -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches.
Airtac SI100 Standard Cylinder SI100X165STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X165STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X165STC |
| Bore size | Ø100 mm |
| Stroke | 165 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 SAI100X165STC 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 SAI100X165STC 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 SI100X165STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×165 | 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 SI100X165STC Is Used
Heavy Stamp Pressing
Ideal for driving heavy stamping or forming dies requiring up to 3927 N of push force at 0.5 MPa.
Pallet Diversion
Uses the TC trunnion mount to pivot and divert large pallets or heavy workpieces along a conveyor line.
Replacing the Airtac SI100 Standard Cylinder SI100X165STC with the SAI100X165STC
To replace the SI100X165STC, order the SAI100X165STC with the exact 100mm bore, 165mm stroke, G1/2 port, and TC trunnion mounting interface. Confirm your thread option (PT/G/NPT) and the -S magnet for position sensing. Sizing both ways: if you need less force, the 80mm bore yields 2513 N push at 0.5 MPa; if you need more, the 125mm bore gives 6136 N. A plain cylinder does not hold load on air loss—the cushion only decelerates. For holding, use an external pilot check valve or the SAIL/BSAI lock variant. At 165mm stroke, side-load is low, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X165STC
- ✓ 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 SI100X165STC FAQ
Yes, the AirTAC SI100X165STC is discontinued. The direct replacement is the SAI100X165STC. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 165mm stroke, G1/2 port, and TC mounting interface.
The G1/2 port bore delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa. At 0.7 MPa push is 5497 N, and 7068 N at 0.9 MPa. The theoretical max force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X165STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X165STC replacement — usually within 7-8 hours.