This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X15, 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 SI100X15
The AirTAC Airtac SI100 Standard Cylinder SI100X15 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 15mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X15, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke15 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X15
- 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 SI100X15
The AirTAC SI100X15 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 15 mm stroke, delivering a push force of 3927 N at 0.5 MPa. Because this legacy unit is end-of-life, you should order the SAI100X15 replacement. It is a direct upgrade: the ISO 15552 mounting interface, G1/2 port, and output force remain identical, so it fits your existing fixtures perfectly.
The SAI revision features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note that this specific SKU lacks the -S magnet, meaning it cannot accept a CS1-B or DS1-B sensor. If your application requires load holding on air loss, explore the SAIL or BSAI lock variants, as standard cushions only decelerate.
Airtac SI100 Standard Cylinder SI100X15 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X15 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X15 |
| Bore size | Ø100 mm |
| Stroke | 15 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 SAI100X15 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 SAI100X15 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 SI100X15
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×15 | 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 SI100X15 Is Used
High-Force Clamping
Secures heavy steel plates in machining fixtures using the 3927 N push force at 0.5 MPa for rigid, zero-movement holding.
Short-Stroke Pressing
Executes compact 15 mm stamping and seating operations for bearings or pins where high impact force is needed in a tight space.
Heavy Duty Ejection
Punches finished molded parts out of thick molds, leveraging the 100 mm bore and 36 mm adjustable cushions to prevent endcap impact.
Replacing the Airtac SI100 Standard Cylinder SI100X15 with the SAI100X15
To replace the discontinued SI100X15, order the SAI100X15. Confirm your ISO 15552 mounting accessory (LB, FA, CA, TC, etc.), the G1/2 port thread (PT, G, or NPT), and the M20x1.5 rod-end connection. Because this SKU has no -S magnet, it cannot support position sensing; if you need switches, select an SAI100X15S and use current AirTAC sensors. Sizing both ways: this 100 mm bore yields 3927 N push at 0.5 MPa; dropping to an 80 mm bore reduces force to 2513 N, while increasing pressure to 0.7 MPa provides 5497 N. For load holding during air loss, a plain cylinder drifts; add an external pilot check valve or specify the SAIL air-released lock or BSAI clamp-lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X15
- ✓ 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 SI100X15 FAQ
Yes, the SI100X15 is discontinued. The direct replacement is the AirTAC SAI100X15. It shares the exact same ISO 15552 mounting interface, 100 mm bore, 15 mm stroke, G1/2 port, and output force, fitting seamlessly into existing machinery.
The G1/2 port is fixed by the 100 mm bore. At 0.5 MPa it provides 3927 N push and 3681 N pull force. At 0.7 MPa push is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X15
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X15 replacement — usually within 7-8 hours.