This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X180STC, 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 SI100X180STC
The AirTAC Airtac SI100 Standard Cylinder SI100X180STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 180mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X180STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke180 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X180STC
- 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 SI100X180STC
The AirTAC SI100X180STC is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore, 180 mm stroke, and TC trunnion mounting. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100X180STC, a direct sharing the exact ISO 15552 interface, bore, stroke, and output force.
The SAI upgrade features a refined piston seal using two Y-shaped one-way elements for lower start-up pressure and longer life. The SAI family also introduces lock and clamp variants (SAIL, BSAI) absent in the SI line.
Airtac SI100 Standard Cylinder SI100X180STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X180STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X180STC |
| Bore size | Ø100 mm |
| Stroke | 180 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 SAI100X180STC 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 SAI100X180STC 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 SI100X180STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×180 | 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 SI100X180STC Is Used
Heavy-Duty Pressing
Drives robust clamping and pressing fixtures requiring up to 5497 N of thrust at 0.7 MPa within compact 180 mm travel.
Pallet Diverting
Actuates heavy pallet stops and routing gates using the TC trunnion mount to handle high moment loads smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100X180STC with the SAI100X180STC
To replace the SI100X180STC, order the SAI100X180STC. Verify your existing TC trunnion mounting hardware, G1/2 port, and the -S magnet requirement for CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). If sizing up or down, neighboring bores are 80 mm (2513 N push @0.5) and 125 mm (6136 N push @0.5). Because stroke is 180 mm, guide external rods to prevent side-load wear. Note that plain cylinders drift on air loss; the cushion only decelerates. For load holding, specify an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X180STC
- ✓ 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 SI100X180STC FAQ
Yes, the SI100X180STC is discontinued. The direct replacement is the SAI100X180STC, which shares the identical ISO 15552 mounting interface, 100 mm bore, 180 mm stroke, G1/2 port, and output force.
It features a G1/2 air port and 25 mm rod. 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, with a theoretical maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X180STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X180STC replacement — usually within 7-8 hours.