This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X300S, 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 SID200X300S
The AirTAC Airtac SID Series Double-Rod Cylinder SID200X300S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 300mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID200X300S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID200X300S
- 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 SID200X300S
The AirTAC SID200X300S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, making the push and pull force equal at 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. This model is discontinued; the direct replacement is the SAID200X300S, sharing the same 200mm bore, 300mm stroke, G3/4 port, and mounting interface. The SAI family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
With a 40mm rod, M36x2 thread, and 50mm adjustable cushions, the SID200X300S provides anti-rotation stability and allows a sensor cam on the back rod. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate; an external rod lock or SAIL/BSAI variant is required to hold loads without live air.
Airtac SID Series Double-Rod Cylinder SID200X300S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID200X300S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X300S |
| Bore size | Ø200 mm |
| Stroke | 300 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 SAID200X300S 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 SAID200X300S 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 SID200X300S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×300 | 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 SID200X300S Is Used
Twin-Tool Machining Station
Drives two opposing machining heads from a single piston, utilising the equal both-ways force to deliver 21110 N @0.7 MPa simultaneously on both strokes.
Symmetrical Transfer Unit
Shifts pallets equally in both directions along a conveyor line, using the back rod to mount a CS1-B/DS1-B sensor cam for dual-end confirmation.
Replacing the Airtac SID Series Double-Rod Cylinder SID200X300S with the SAID200X300S
To replace the discontinued SID200X300S, install the SAID200X300S directly—it matches the ISO 15552 dimensions, 200mm bore, 300mm stroke, and G3/4 port. Because force is equal both ways, size it by checking neighbouring bores against your exact push and pull requirements. A double-rod design is the right choice when you need anti-rotation resistance, want to drive two tools from one piston, or require a back-rod sensor cam. You can reuse FA, LB, or TC mounts. The -S suffix provides a piston magnet for position sensing. At 300mm stroke, use external guides to prevent rod bending under side loads. For load-holding without live air, use an external rod lock or pilot-operated check valve, as cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID200X300S
- ✓ 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 SID200X300S FAQ
Yes, the SID200X300S is discontinued. The direct replacement is the SAID200X300S, which shares the same ISO 15552 interface, 200mm bore, 300mm stroke, G3/4 port, and equal-both-ways force. The SAI family also adds upgraded piston seals and SAIL/BSAI lock variants.
The G3/4 port feeds a double-acting double-rod design delivering equal force both ways: 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAID200X300S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID200X300S replacement — usually within 7-8 hours.