This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X120TC, 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 SI100X120TC
The AirTAC SI100 Standard Cylinder SI100X120TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 120mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X120TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke120 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X120TC
- 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 SI100X120TC
The AirTAC SI100X120TC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 120mm stroke. Delivering 3927N push force at 0.5MPa via a G1/2 port, it is replaced by the SAI100X120TC. This direct successor matches the TC trunnion mount, M20x1.5 rod thread, and 36mm cushions.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. It adds SAIL, SAIF, and BSAI lock variants the SI lacked. Without a magnet, this SKU cannot take a sensor.
Airtac SI100 Standard Cylinder SI100X120TC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X120TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X120TC |
| Bore size | Ø100 mm |
| Stroke | 120 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 SAI100X120TC 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 SAI100X120TC 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 SI100X120TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×120 | 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 SI100X120TC Is Used
Press Clamping
Secures heavy workpieces in machining fixtures using 3927N of thrust at 0.5MPa.
Pallet Diversion
Actuates TC trunnion-mounted routing gates for high-mass material handling lines.
Heavy Load Ejection
Pushes finished assemblies from processing stations with a 120mm stroke.
Replacing the Airtac SI100 Standard Cylinder SI100X120TC with the SAI100X120TC
To replace the SI100X120TC, order the SAI100X120TC. Verify the ISO 15552 TC trunnion interface, 120mm stroke, G1/2 port, and M20x1.5 thread. As this SKU lacks an -S magnet, it cannot accept CS1-B/DS1-B sensors. Sizing both ways: the 100mm bore yields 3927N push at 0.5MPa (7068N at 0.9MPa); if oversizing, an 80mm bore provides 2513N. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Since stroke is under 300mm, severe side-load rod-bending is minimal, but standard guide alignment is still advised.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X120TC
- ✓ 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 SI100X120TC FAQ
Yes, the SI100X120TC is discontinued. The direct replacement is the SAI100X120TC. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 120mm stroke, G1/2 port, TC trunnion mount, and output force.
The G1/2 port bore delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N at 0.9MPa, and a theoretical max of 801kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X120TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X120TC replacement — usually within 7-8 hours.