This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X450S, 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 SID Series Double-Rod Cylinder SID100X450S
The AirTAC Airtac SID Series Double-Rod Cylinder SID100X450S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 450mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID100X450S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke450 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID100X450S
- 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 SID Series Double-Rod Cylinder SID100X450S
The AirTAC SID100X450S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends, making push and pull force equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The direct replacement is the SAID100X450S, matching the 100mm bore, 450mm stroke, G1/2 port, M20x1.5 rod thread, and 36mm cushions. The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life.
Because both faces use the rod-side area, the second rod can carry a sensor cam or drive two tools simultaneously while resisting rotation. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate near stroke end; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Airtac SID Series Double-Rod Cylinder SID100X450S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID100X450S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X450S |
| Bore size | Ø100 mm |
| Stroke | 450 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 SAID100X450S 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 SAID100X450S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SID Series Double-Rod Cylinder SID100X450S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×450 | 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 SID Series Double-Rod Cylinder SID100X450S Is Used
Twin-Tool Synchronized Drive
Drives two opposing machining or forming tools simultaneously from one piston, utilizing the equal both-ways force to ensure perfectly balanced 3681 N @0.5 MPa clamping on both ends.
Anti-Rotation Web Guiding
The twin-rod architecture prevents piston rotation during the 450mm stroke, keeping the attached web guide roller perfectly aligned without needing external linear bearings.
Dual-Side Cam Positioning
Uses the rear exiting rod to carry a sensor cam for legacy CS1-B/DS1-B switches, freeing the primary rod end to handle the primary 100mm bore work load without bracket interference.
Replacing the Airtac SID Series Double-Rod Cylinder SID100X450S with the SAID100X450S
To replace the discontinued SID100X450S, install the SAID100X450S directly into the existing ISO 15552 mounting (Basic, FA, LB, or TC) using the same G1/2 port and M20x1.5 rod threads. Size both directions by verifying the equal-both-ways force (3681 N @0.5 MPa) handles your load; if more force is needed, step up to the 125mm bore, or drop to 80mm (2268 N) for lighter duties. A double rod is right when you need anti-rotation, a back-side sensor cam, or to drive two tools. The -S magnet enables position sensing. For this 450mm stroke, add external guides to prevent rod bending under side loads. Remember, cushions only decelerate; they do not hold loads without live air.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID100X450S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SID Series Double-Rod Cylinder SID100X450S FAQ
Yes, the SID100X450S is discontinued. The direct replacement is the SAID100X450S. It shares the same ISO 15552 interface, 100mm bore, 450mm stroke, G1/2 port, and mounting options, while adding an upgraded two Y-shaped one-way piston seal.
As a double-rod cylinder, force is equal both ways: 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The air port is G1/2, the rod thread is M20x1.5, and it features 36mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID100X450S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X450S replacement — usually within 7-8 hours.