This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X665S, 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 SI100X665S
The AirTAC Airtac SI100 Standard Cylinder SI100X665S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 665mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X665S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke665 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X665S
- 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 SI100X665S
The AirTAC SI100X665S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 665mm stroke. It delivers a push force of 3927 N at 0.5 MPa through its G1/2 port. AirTAC replaced this legacy unit with the SAI100X665S, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, and output force.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces lock and valve variants (SAIL, BSAI, SAIF) absent in the SI line.
Airtac SI100 Standard Cylinder SI100X665S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X665S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X665S |
| Bore size | Ø100 mm |
| Stroke | 665 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 SAI100X665S 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 SAI100X665S 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 SI100X665S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×665 | 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 SI100X665S Is Used
Heavy Stamping Press
Drives upper tooling assemblies in automated stamping lines, utilizing the 3927 N push force at 0.5 MPa to form thick gauge materials reliably.
Pallet Lift Gate
Actuates heavy loading dock gates; the 665mm stroke provides the elevation range needed to clear standard freight pallets during transfer.
Bulk Diversion Arm
Pivots heavy routing arms on high-capacity packaging conveyors, handling substantial side-loads when redirecting dense product flows.
Replacing the Airtac SI100 Standard Cylinder SI100X665S with the SAI100X665S
To replace the SI100X665S, order the SAI100X665S. Confirm the ISO 15552 mounting interface (LB, FA, CA, TC, etc.), the G1/2 port, the M20x1.5 rod thread, and the -S magnet for CS1-B/DS1-B legacy sensors (the SAI uses current AirTAC switches). Sizing checks: the 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore yields 6136 N. Because this is a 665mm stroke, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding, specify the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X665S
- ✓ 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 SI100X665S FAQ
Yes, the AirTAC SI100X665S is discontinued. The direct replacement is the SAI100X665S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 665mm stroke, output force, G1/2 port, and mounting accessories.
This double-acting cylinder uses 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. Speed range is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X665S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X665S replacement — usually within 7-8 hours.