This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X350S, 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 SID80X350S
The AirTAC Airtac SID Series Double-Rod Cylinder SID80X350S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID80X350S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID80X350S
- 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 SID80X350S
The AirTAC SID80X350S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. This means both faces use the rod-side area, making push and pull force equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The bore is 80 mm, the piston rod is Ø25 mm with an M20x1.5 thread, and the air port is G3/8. This discontinued model is replaced by the direct replacement SAID80X350S, which shares the exact ISO 15552 mounting interface, bore, stroke, and adjustable 36 mm air cushions at each end.
Because the second rod can carry a sensor cam or drive two tools simultaneously while resisting rotation, double-rod designs suit synchronized loading. The SAID replacement also uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note that a plain cylinder drifts on air loss; the cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID80X350S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID80X350S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X350S |
| Bore size | Ø80 mm |
| Stroke | 350 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 SAID80X350S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAID80X350S 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 SID80X350S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SID80X350S Is Used
Synchronized Transfer
Drives opposing conveyor pick-off arms simultaneously, using the equal both-ways force to push and pull parts evenly without rotation.
Dual-Tool Machining
Powers two opposing machining heads from one piston, keeping stroke lengths identical and maintaining precise parallel movement.
Guided Lifting
Lifts vertical loads in material handling racks where the twin rods prevent twisting and the back rod carries a sensor cam.
Replacing the Airtac SID Series Double-Rod Cylinder SID80X350S with the SAID80X350S
To replace the discontinued SID80X350S, install the direct replacement SAID80X350S, matching the 80 mm bore, 350 mm stroke, G3/8 port, and ISO 15552 mounting dimensions. Because force is equal both ways, verify the 2268 N @0.5 MPa rating fits your load, or step to the 100 mm bore for more power. Choose a double-rod cylinder when you need anti-rotation, a back rod for a sensor cam, or to drive two tools. Reuse FA, LB, or TC mounts. The -S suffix means a magnet is present for CS1-B/DS1-B switches. For the 350 mm stroke, use external guides to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID80X350S
- ✓ 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 SID80X350S FAQ
Yes, the SID80X350S is discontinued. The direct replacement is the SAID80X350S. It shares the same ISO 15552 interface, 80 mm bore, 350 mm stroke, G3/8 port, and mounting, but adds an upgraded piston seal.
The G3/8 port feeds a double-acting double-rod design with equal push and pull force: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. Speed is 30-800 mm/s with 36 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID80X350S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X350S replacement — usually within 7-8 hours.