This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X315STC, 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 SI100X315STC
The AirTAC Airtac SI100 Standard Cylinder SI100X315STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 315mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X315STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke315 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X315STC
- 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 SI100X315STC
The AirTAC SI100X315STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 315mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. The direct replacement is SAI100X315STC, maintaining the exact ISO 15552 mounting interface, bore, stroke, force, port and mounting.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. For load holding, use SAIL or BSAI lock variants, as cushions only decelerate.
Airtac SI100 Standard Cylinder SI100X315STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X315STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X315STC |
| Bore size | Ø100 mm |
| Stroke | 315 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 SAI100X315STC 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 SAI100X315STC 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 SI100X315STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×315 | 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 SI100X315STC Is Used
Heavy-Duty Pressing
Drives large stamping and forming presses requiring 3927N push force at 0.5MPa with stable 315mm travel.
Pallet Diversion
Actuates heavy pallet stops and routing gates using the TC trunnion mount to handle mid-stroke pivoting loads.
Replacing the Airtac SI100 Standard Cylinder SI100X315STC with the SAI100X315STC
To replace the SI100X315STC, order SAI100X315STC. Verify the TC trunnion mount, G1/2 port, M20x1.5 rod thread, and the -S magnet for CS1-B/DS1-B sensors (SAI uses current AirTAC switches). The 100mm bore yields 3927N push at 0.5MPa; if undersizing, an 80mm bore gives 2513N. At 315mm stroke, use external guides to prevent rod bending. The cushion only decelerates; for load holding on air loss, use SAIL/BSAI locks or a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X315STC
- ✓ 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 SI100X315STC FAQ
Yes, the SI100X315STC is discontinued. The direct replacement is the SAI100X315STC. It is dimensionally interchangeable per ISO 15552, keeping the same 100mm bore, 315mm stroke, 3927N force, G1/2 port, and TC trunnion mounting.
At 0.5MPa it pushes 3927N and pulls 3681N. At 0.7MPa push is 5497N, and 7068N at 0.9MPa. The theoretical max force is 801kgf at 1.0MPa. Operating speed is 30-800mm/s. The G1/2 port and 36mm adjustable cushions manage the kinetic energy.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X315STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X315STC replacement — usually within 7-8 hours.