This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X700S, 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.

The AirTAC Airtac SID Series Double-Rod Cylinder SID80X700S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 700mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID80X700S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID80X700S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. This geometry makes push and pull force equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The SID80X700S is discontinued and the direct replacement is the SAID80X700S, which keeps the same 80mm bore, 700mm stroke, G3/8 port, and mounting interface. The SAI upgrade uses an improved two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because both faces use the rod-side annular area, the bore 80mm unit with its Ø25mm rod delivers equal both-ways thrust. The back rod can drive a second tool or carry a sensor cam for -S magnet switches. Note that air cushions only decelerate near stroke end; for load holding on air loss, use an external rod lock or the SAIL/BSAI lock variant.
| Model | Airtac SID Series Double-Rod Cylinder SID80X700S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X700S |
| Bore size | Ø80 mm |
| Stroke | 700 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 SAID80X700S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAID80X700S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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).
Drives two opposing tools simultaneously from one piston, utilizing the equal both-ways 3175 N @0.7 MPa thrust for synchronized material removal.
The dual-rod geometry prevents mechanical twist during long 700mm strokes, ensuring stable product diversion on high-speed packaging lines.
Uses the extending back rod to carry a -S magnet cam past legacy CS1-B/DS1-B sensors, confirming exact stroke end without external linkages.
To replace the discontinued SID80X700S, specify the SAID80X700S directly; it is a direct swap retaining the ISO 15552 mounting interface, 700mm stroke, and G3/8 port. Size both ways by confirming the 2268 N @0.5 MPa equal force is sufficient, or step to a 100mm bore if more thrust is needed. A double rod is right when you need anti-rotation stability or a rear sensor cam. Mounting options include FA, LB, and TC brackets. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches. For this 700mm long stroke, add external guides to prevent rod bending and side-load damage.
Replacement checklist
Yes, the SID80X700S is discontinued. The direct replacement is the SAID80X700S. It shares the identical ISO 15552 interface, 80mm bore, 700mm stroke, G3/8 port, and equal both-ways force, but adds an upgraded SAI piston seal for longer life.
Force is equal both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The speed range is 30-800 mm/s. It features a Ø25mm rod, M20x1.5 rod thread, and 36mm adjustable air cushions at each end.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X700S replacement — usually within 7-8 hours.