This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X450, 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 SID200X450
The AirTAC Airtac SID Series Double-Rod Cylinder SID200X450 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 SAID200X450, 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 → SAID200X450
- 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 SID200X450
The AirTAC SID200X450 is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends. This yields equal push and pull force (15080 N at 0.5 MPa) and prevents rotation. The direct replacement is the SAID200X450, retaining the 450 mm stroke, G3/4 port, and M36x2 rod thread. The SAI family uses an upgraded two-piece Y-shaped piston seal for lower start-up pressure.
With no -S suffix, this SKU cannot accept magnetic switches. A plain cylinder drifts on air loss; the 50 mm cushions only decelerate, so use an external rod lock for holding.
Airtac SID Series Double-Rod Cylinder SID200X450 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID200X450 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X450 |
| 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 SAID200X450 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 SAID200X450 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 SID200X450
| 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 SID200X450 Is Used
Synchronized Conveyor Transfer
Drives opposing transfer arms simultaneously from a single piston, ensuring perfectly balanced material handoff without rotational drift.
Twin-Tool Machining Station
Powers two opposing machining heads from one actuator, keeping thrust identical in both directions for matched cutting operations.
Replacing the Airtac SID Series Double-Rod Cylinder SID200X450 with the SAID200X450
To replace the SID200X450, install the SAID200X450 directly; it matches the ISO 15552 mounting interface, bore, stroke, and equal-both-ways force. If sizing neighbors, the 160 mm bore yields 9425 N and the 200 mm bore yields 15080 N at 0.5 MPa. A double rod is right when you need anti-rotation or to drive two tools. Reuse FA, LB, or TC mounts. For the 450 mm stroke, add external guides to prevent rod bending under side loads. This non-magnetic model cannot take sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID200X450
- ✓ 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 SID200X450 FAQ
Yes, the SID200X450 is discontinued. The direct replacement is the SAID200X450, matching the ISO 15552 interface, 200 mm bore, 450 mm stroke, G3/4 port, and mounting hardware.
Force is equal both ways: 15080 N at 0.5 MPa, 21110 N at 0.7 MPa, and 27141 N at 0.9 MPa. Speed is 30-500 mm/s. The G3/4 port and 50 mm adjustable cushions manage deceleration, but an external rod lock is required to hold loads.
Related AirTAC SAI Cylinders
Request a Quote for the SAID200X450
Send us the quantity and destination. We confirm price, stock and lead time on the SAID200X450 replacement — usually within 7-8 hours.