This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X180S, 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 SID80X180S
The AirTAC Airtac SID Series Double-Rod Cylinder SID80X180S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 180mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID80X180S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID80X180S
- 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 SID80X180S
The AirTAC SID80X180S is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making push and pull force equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. It features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, and a fixed G3/8 port. The direct replacement is the SAID80X180S, reusing the same mounting interface, bore, and stroke.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life, while adding SAIL and BSAI lock variants the SI line lacked. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B sensors. A plain cylinder drifts on air loss, as cushions only decelerate; use an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID80X180S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID80X180S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X180S |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAID80X180S 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 SAID80X180S 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 SID80X180S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SID80X180S Is Used
Synchronized Conveyor Transfer
Uses the extended back rod to push a parallel transfer carriage simultaneously, keeping movements synchronized without external linkages.
Dual-Tool Machining Station
Drives two independent tooling heads from one piston assembly, utilizing the equal both-ways force to machine opposing part faces evenly.
Anti-Rotation Lift Gate
Employs the twin rods exiting both ends to resist torsional twisting during vertical lift, ensuring the gate remains perfectly level.
Replacing the Airtac SID Series Double-Rod Cylinder SID80X180S with the SAID80X180S
Replace the discontinued SID80X180S directly with the SAID80X180S, keeping the existing ISO 15552 FA, LB, or TC mounts and G3/8 port. Because force is equal both ways, size both directions identically; if less force is needed, step down to bore 63 (1402 N @0.5 MPa), or step up to bore 100 (3681 N @0.5 MPa) for more power. Choose a double-rod cylinder when you need anti-rotation stability or want to drive two tools from one piston. The -S magnet enables position sensing. For this 180 mm stroke, side-load is minimal, but for strokes >=300 mm ensure guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID80X180S
- ✓ 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 SID80X180S FAQ
Yes, the SID80X180S is discontinued. The direct replacement is the SAID80X180S. It shares the same ISO 15552 interface, 80 mm bore, 180 mm stroke, G3/8 port, and equal both-ways force, but features an upgraded piston seal.
As a double-rod cylinder, push and pull force are equal both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The fixed air port is G3/8, the rod is 25 mm with an M20x1.5 thread, and speed ranges 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID80X180S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X180S replacement — usually within 7-8 hours.