This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X327STC, 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 SI100X327STC
The AirTAC SI100 Standard Cylinder SI100X327STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 327mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X327STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke327 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X327STC
- 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 SI100X327STC
The AirTAC SI100X327STC is a discontinued double-acting ISO 15552 profile cylinder with a 327 mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa, utilizing a G1/2 port and M20x1.5 rod thread. Because the 327 mm stroke is nonstandard, expect a special-order or custom machined piston rod. The direct replacement is the SAI100X327STC, retaining the exact ISO 15552 mounting interface, TC trunnion mount, force class, and port size.
The SAI upgrade features a revised piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life. With the -S magnet, this cylinder supports legacy CS1-B/DS1-B sensors, while the SAI replacement uses current AirTAC switches. If you need load holding on air loss, note that the air cushion only decelerates; you must use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Airtac SI100 Standard Cylinder SI100X327STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X327STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X327STC |
| Bore size | Ø100 mm |
| Stroke | 327 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 SAI100X327STC 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 SAI100X327STC 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 SI100X327STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×327 | 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 SI100X327STC Is Used
Pallet Diversion
Uses the 5497 N push force at 0.7 MPa to deflect heavy pallets along a high-speed packaging line, guided externally to prevent rod bending over the 327 mm extension.
Press Ejection
Ejects formed metal components from a press bed, relying on the 36 mm adjustable air cushions to decelerate the 25 mm rod smoothly at stroke end.
Replacing the Airtac SI100 Standard Cylinder SI100X327STC with the SAI100X327STC
To replace the SI100X327STC, order the SAI100X327STC. Confirm the ISO 15552 interface, the 100 mm bore, the nonstandard 327 mm stroke, the G1/2 port, and the TC trunnion mounting accessory. The -S suffix means a magnet is present for position sensing. When sizing both ways, neighboring bores offer different force classes: an 80 mm bore provides 2513 N push at 0.5 MPa, while a 125 mm bore yields 6136 N. At 0.7 MPa, this 100 mm bore generates 5497 N. Because the 327 mm stroke is relatively long, prevent rod bending by guiding the load externally to avoid side-load damage. For applications requiring the cylinder to hold a load without live air, a plain SAI cylinder will drift; instead, select the SAIL air-released lock, the BSAI clamp-lock variant, or add an external pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X327STC
- ✓ 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 SI100X327STC FAQ
Yes, the SI100X327STC is discontinued. The direct replacement is the SAI100X327STC. It shares the identical ISO 15552 mounting interface, 100 mm bore, 327 mm stroke, output force, G1/2 port, and TC trunnion mount, fitting directly into existing fixtures.
This double-acting cylinder uses a G1/2 port. The force output is 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 of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X327STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X327STC replacement — usually within 7-8 hours.