This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X640, 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 SI100X640
The AirTAC Airtac SI100 Standard Cylinder SI100X640 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 640mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X640, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke640 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X640
- 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 SI100X640
The AirTAC SI100X640 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 640mm stroke. It delivers 3927N push force at 0.5MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100X640, a direct sharing the same interface, force, and mounting fixtures.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor, unlike CS1-B equipped versions.
Airtac SI100 Standard Cylinder SI100X640 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X640 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X640 |
| Bore size | Ø100 mm |
| Stroke | 640 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 SAI100X640 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 SAI100X640 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 SI100X640
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×640 | 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 SI100X640 Is Used
Heavy Material Transfer
Drives robust pallet stops and heavy product diverters on automated packaging lines using its 3927N thrust at 0.5MPa.
Pallet Positioning
Indexes loaded pallets into wrapping or strapping stations, utilizing the 640mm stroke to clear downstream machinery.
Large Press Ejection
Pushes formed metal or composite parts out of large presses, benefiting from the adjustable 36mm air cushions at stroke ends.
Replacing the Airtac SI100 Standard Cylinder SI100X640 with the SAI100X640
To replace the SI100X640, order the SAI100X640 and verify your ISO 15552 mounting interface, G1/2 port, and M20x1.5 rod thread. If you need position sensing, select an SAI model with the magnet option, as this plain SKU lacks sensing capability. For sizing alternatives, the 80mm bore yields 2513N push at 0.5MPa, while the 125mm bore offers 6136N. Remember that a standard cylinder drifts without live air; for load holding on pressure loss, use an external pilot check valve or explore the SAIL lock and BSAI clamp-lock variants. Because the 640mm stroke is long, always use external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X640
- ✓ 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 SI100X640 FAQ
Yes, the SI100X640 is discontinued. The direct replacement is the SAI100X640. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 640mm stroke, output force, G1/2 port, and mounting interface. You simply order the SAI equivalent for your existing fixtures.
This double-acting cylinder features a G1/2 air port and an M20x1.5 rod thread. The force output is 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X640
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X640 replacement — usually within 7-8 hours.