This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X450S, 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 SID200X450S
The AirTAC Airtac SID Series Double-Rod Cylinder SID200X450S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 450mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID200X450S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke450 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID200X450S
- 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 SID200X450S
The AirTAC SID200X450S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force is equal both ways (15080 N at 0.5 MPa, 21110 N at 0.7 MPa, 27141 N at 0.9 MPa). It features a 200 mm bore, a 40 mm piston rod, and a G3/4 air port. The direct replacement is the SAID200X450S, which reuses the same ISO 15552 mounting interface, bore, stroke, and porting. The SAI family upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
A double rod resists rotation and lets the back rod carry a sensor cam or drive a second tool simultaneously. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches, while the SAI replacement uses current AirTAC switches. Note that a plain cylinder does not hold loads on air loss; the 50 mm adjustable cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID200X450S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID200X450S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X450S |
| Bore size | Ø200 mm |
| Stroke | 450 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID200X450S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAID200X450S 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 SID200X450S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | 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 SID200X450S Is Used
High-Capacity Transfer Gate
Shifts heavy palletized loads transversely on a conveyor line, using the back rod to carry a sensor cam for precise mid-stroke positioning without rotation.
Replacing the Airtac SID Series Double-Rod Cylinder SID200X450S with the SAID200X450S
To replace the discontinued SID200X450S, install the SAID200X450S direct, matching the 200 mm bore, 450 mm stroke, G3/4 port, and ISO 15552 mounting dimensions (Basic, FA, LB, TC, FTC, TCM1, TCM2). Size both ways by confirming the equal both ways force (15080 N at 0.5 MPa) fits your dynamic requirement, or step to neighbour bores if more capacity is needed. A double rod is right when you need anti-rotation, a back-rod sensor cam, or dual-tool driving. Retain the -S magnet option for position sensing. For this 450 mm stroke, add external guides to prevent rod bending under side loads. Operating speed is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID200X450S
- ✓ 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 SID200X450S FAQ
Yes, the AirTAC SID200X450S is discontinued. The direct replacement is the SAID200X450S, which shares the same ISO 15552 interface, 200 mm bore, 450 mm stroke, G3/4 port, and mounting. The SAI family also adds an upgraded piston seal and SAIL/BSAI lock variants.
Because it is a double-rod cylinder, force is equal both ways: 15080 N at 0.5 MPa, 21110 N at 0.7 MPa, and 27141 N at 0.9 MPa. The G3/4 ported 200 mm bore operates at 30-500 mm/s. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches.
Related AirTAC SAI Cylinders
Request a Quote for the SAID200X450S
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