This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X30STC, 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 SI100X30STC
The AirTAC SI100 Standard Cylinder SI100X30STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 30mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X30STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X30STC
- 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 SI100X30STC
The AirTAC SI100X30STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 30mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100X30STC, a direct upgrade retaining the exact ISO 15552 mounting interface, TC trunnion mount, and output force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line. Your -S suffix denotes a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X30STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X30STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X30STC |
| Bore size | Ø100 mm |
| Stroke | 30 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 SAI100X30STC 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 SAI100X30STC 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 SI100X30STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×30 | 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 SI100X30STC Is Used
Heavy-Duty Clamping
Secures large castings during machining using the 3927 N push force at 0.5 MPa, leveraging the short 30mm stroke for rapid high-force actuation.
Pallet Diverting
Handles robust diverting of heavy pallets on packaging lines, where the TC trunnion mount absorbs lateral moments during high-speed 30-800 mm/s cycling.
Material Stops
Acts as a heavy-duty end-stop for accumulated goods on roller conveyors, withstanding impacts while the G1/2 port ensures rapid exhaust.
Replacing the Airtac SI100 Standard Cylinder SI100X30STC with the SAI100X30STC
To replace the SI100X30STC, order the SAI100X30STC. Verify the ISO 15552 TC trunnion interface, 100mm bore, 30mm stroke, G1/2 port, and the -S magnet for current AirTAC switches. If you need less force, a 80mm bore yields 2513 N push at 0.5 MPa; for more power, a 125mm bore provides 6136 N. Note that a plain cylinder drifts without live air, as the 36mm adjustable cushion only decelerates the load. For holding loads, use an external pilot check valve or the SAIL lock variant. Rod material options include carbon steel, SUS420J2, or SUS304.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X30STC
- ✓ 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 SI100X30STC FAQ
Yes, the SI100X30STC is discontinued. The direct replacement is the SAI100X30STC. It shares the identical ISO 15552 mounting interface, 100mm bore, 30mm stroke, output force, G1/2 port, and TC trunnion mounting, fitting directly into existing fixtures.
The 100mm bore features a G1/2 port and delivers 3927 N push and 3681 N pull at 0.5 MPa. At 0.7 MPa push is 5497 N, and 7068 N at 0.9 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X30STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X30STC replacement — usually within 7-8 hours.