This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X20TC, 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 SI100X20TC
The AirTAC Airtac SI100 Standard Cylinder SI100X20TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 20mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X20TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke20 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X20TC
- 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 SI100X20TC
The AirTAC SI100X20TC is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 20 mm stroke. It delivers a push force of 3927 N at 0.5 MPa and uses a G1/2 air port. The direct replacement is the SAI100X20TC, which shares identical mounting, force, and port dimensions.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X20TC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X20TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X20TC |
| Bore size | Ø100 mm |
| Stroke | 20 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 SAI100X20TC 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 SAI100X20TC 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 SI100X20TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×20 | 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 SI100X20TC Is Used
Short-Stroke Clamping
Ideal for high-force 3927 N clamping of heavy metal castings in machining fixtures where only 20 mm of travel is needed.
Press Ejection
Provides a robust 100 mm bore push to eject dense parts from a hydraulic press bed using the rigid TC trunnion mount.
Spot Holding
Secures large weldments in place during robotic welding, utilizing the 3681 N pull force to resist vibration.
Replacing the Airtac SI100 Standard Cylinder SI100X20TC with the SAI100X20TC
To replace the SI100X20TC, order the SAI100X20TC. Confirm the TC trunnion mount, G1/2 port, and 20 mm stroke. Because this non-magnet version lacks a sensor groove piston ring, it cannot take switches. If sizing alternatives, a 100 mm bore yields 3927 N push at 0.5 MPa (5497 N at 0.7 MPa). For load holding on air loss, note the cushion only decelerates; use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X20TC
- ✓ 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 SI100X20TC FAQ
Yes, the SI100X20TC is discontinued. The direct replacement is the SAI100X20TC. It is dimensionally interchangeable per ISO 15552, keeping the same 100 mm bore, 20 mm stroke, G1/2 port, and TC trunnion mount.
The G1/2 ported bore delivers a push of 3927 N and pull of 3681 N at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a max force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X20TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X20TC replacement — usually within 7-8 hours.