This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X440, 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 SI100X440
The AirTAC Airtac SI100 Standard Cylinder SI100X440 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 440mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X440, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke440 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X440
- 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 SI100X440
The AirTAC SI100X440 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 440mm stroke, delivering 3927N push force at 0.5MPa. It is replaced by the SAI100X440, a direct upgrade retaining the same G1/2 port, M20x1.5 rod thread, and 36mm cushions.
The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X440 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X440 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X440 |
| Bore size | Ø100 mm |
| Stroke | 440 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 SAI100X440 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 SAI100X440 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 SI100X440
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×440 | 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 SI100X440 Is Used
Heavy Press Stamping
Drives large forming dies requiring 3927N of push force at 0.5MPa to deform thick sheet metal reliably.
Pallet Lift Stations
Raises loaded pallets vertically; the 440mm stroke provides the elevation needed for conveyor transfer.
Bulk Material Diversion
Actuates heavy routing gates on high-capacity packaging lines, utilizing the G1/2 port for rapid cycling.
Replacing the Airtac SI100 Standard Cylinder SI100X440 with the SAI100X440
To replace the SI100X440, order the SAI100X440 with identical ISO 15552 interface, 440mm stroke, G1/2 port, and mounting. This non-magnet SKU cannot take sensors; order an -S suffix if position detection is needed. At 0.5MPa it yields 3927N push and 3681N pull; neighboring bores (80mm/125mm) offer 2513N/6136N push respectively. Air cushions only decelerate; use a SAIL lock, BSAI clamp-lock, or external pilot check valve to hold loads. For 440mm strokes, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X440
- ✓ 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 SI100X440 FAQ
Yes, the SI100X440 is discontinued. The direct replacement is the SAI100X440. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 440mm stroke, output force, G1/2 port, and mounting accessories.
The G1/2 port bore delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a maximum theoretical force of 801kgf at 1.0MPa. It operates at 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X440
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X440 replacement — usually within 7-8 hours.