This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X150STC, 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 SI100X150STC
The AirTAC Airtac SI100 Standard Cylinder SI100X150STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 150mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X150STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X150STC
- 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 SI100X150STC
The AirTAC SI100X150STC is a discontinued double-acting ISO 15552 profile cylinder delivering 3927 N push force at 0.5 MPa through a 100 mm bore and 150 mm stroke. It features a G1/2 port and a TC trunnion mount interface. AirTAC replaced this legacy unit with the SAI100X150STC, a direct upgrade retaining the exact ISO 15552 mounting dimensions, bore, stroke, and output force.
The SAI replacement incorporates an upgraded piston seal with 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, and the original -S magnet on this unit functioned with legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X150STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X150STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X150STC |
| Bore size | Ø100 mm |
| Stroke | 150 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 SAI100X150STC 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 SAI100X150STC 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 SI100X150STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×150 | 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 SI100X150STC Is Used
Heavy-Duty Pressing
Drives robust pressing and forming stations requiring up to 3927 N of thrust at 0.5 MPa, utilizing the 150 mm stroke to cycle tooling securely.
Pallet Diversion
Actuates heavy pallet stops and routing gates on high-throughput conveyor lines, taking advantage of the TC trunnion mount for pivoting alignment.
Replacing the Airtac SI100 Standard Cylinder SI100X150STC with the SAI100X150STC
To replace the SI100X150STC, order the SAI100X150STC. Confirm the ISO 15552 TC trunnion mounting interface, the G1/2 port, the 150 mm stroke, and the -S magnet specification. If you need to scale up or down, neighboring bores are 80 mm and 125 mm; at 0.5 MPa, the 80 mm yields 2513 N push while the 125 mm yields 6136 N. Note that a standard cylinder drifts without live air, as the adjustable 36 mm cushions only decelerate the rod near stroke end. For load holding on air loss, specify an external pilot check valve, a rod lock, or the SAIL/BSAI lock variants. The bore 100 speed range is 30-800 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X150STC
- ✓ 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 SI100X150STC FAQ
Yes, the SI100X150STC is discontinued. The direct replacement is the SAI100X150STC. It shares the identical ISO 15552 mounting interface, 100 mm bore, 150 mm stroke, output force, and G1/2 port, fitting directly into existing fixtures without modification.
The 100 mm bore features a G1/2 air port. It generates 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 SAI100X150STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X150STC replacement — usually within 7-8 hours.