This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X600S, 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 SID80X600S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID80X600S, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SID80X600S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal force in both directions (2268 N at 0.5 MPa). Because both faces use the rod-side annulus area, push and pull forces match exactly. The bore dictates a G3/8 port, a 25 mm rod with an M20x1.5 thread, and 36 mm adjustable cushions. This legacy unit is discontinued; the direct replacement is the SAID80X600S, reusing the exact same ISO 15552 mounting interface and stroke.
The SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B sensors. Remember that air cushions only decelerate; a plain cylinder drifts on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
| Model | Airtac SID Series Double-Rod Cylinder SID80X600S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X600S |
| Bore size | Ø80 mm |
| Stroke | 600 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 SAID80X600S 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 SAID80X600S 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. |
| ×600 | 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 a clamping fixture where the return stroke must exert the same 2268 N holding force as the extend stroke, ensuring consistent part deformation.
Uses the second protruding rod to mount a secondary pickup cam or sensor target, synchronizing two separate conveyor actions without external linkages.
Lifts a 116 kg vertical payload using the twin-rod architecture to resist torsional twisting and prevent platform binding over the 600 mm travel.
To replace the discontinued SID80X600S, specify the SAID80X600S, which preserves the 80 mm bore, 600 mm stroke, G3/8 port, and ISO 15552 mounting footprint (Basic, FA, LB, TC, FTC, TCM1, TCM2). Select a double-rod design when you need equal both-ways force, anti-rotation stability, or a back rod to carry a sensor cam. Because force is identical in both directions, verify your load against the 2268 N figure at 0.5 MPa; if you need more or less force, evaluate the neighbouring 63 mm or 100 mm bores. For this 600 mm stroke, add external guide rails to prevent rod bending under side loads. The -S magnet enables position sensing, while the SAI family adds SAIL and BSAI lock variants for load-holding if standard air is insufficient.
Replacement checklist
Yes, the SID80X600S is discontinued. The direct replacement is the SAID80X600S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 600 mm stroke, G3/8 port, and equal both-ways force, but features an upgraded two-piece Y-shaped piston seal for longer life.
Because it is a double-rod cylinder, force is equal in both directions: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at 0.9 MPa. The bore size dictates a G3/8 air port, a 25 mm piston rod, an M20x1.5 rod thread, and 36 mm adjustable air cushions. Operating speed is 30-800 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X600S replacement — usually within 7-8 hours.