This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID80X125S, 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 SID80X125S
The AirTAC Airtac SID Series Double-Rod Cylinder SID80X125S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID80X125S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID80X125S
- 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 SID80X125S
The AirTAC SID80X125S is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. Because both faces use the rod-side area, push and pull force are equal at 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. The bore dictates a G3/8 air port, a Ø25 mm piston rod with an M20x1.5 thread, and 36 mm adjustable air cushions at each end. This unit is discontinued and drops directly into the exact ISO 15552 mounting interface as the SAID80X125S.
The SAID80X125S replacement retains the 125 mm stroke, porting, and equal-both-ways force, but adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life. The second rod prevents rotation and can carry a sensor cam or drive a second tool simultaneously. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches; the SAI replacement uses current AirTAC switches.
Airtac SID Series Double-Rod Cylinder SID80X125S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID80X125S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID80X125S |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAID80X125S 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 SAID80X125S 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 SID80X125S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SID80X125S Is Used
Twin-Tool Machining Station
Drives two opposing machining heads simultaneously from a single piston, utilizing the equal both-ways force to ensure balanced cutting pressure on both ends.
Anti-Rotation Transfer Gate
Uses the dual-rod architecture to prevent mechanical rotation during extended transfer strokes, maintaining precise alignment without external linear guides.
Symmetric Clamping Fixture
Clamps workpieces from both sides equally using the 3175 N @0.7 MPa force, with the second rod mounting a sensor cam to confirm clamp position.
Replacing the Airtac SID Series Double-Rod Cylinder SID80X125S with the SAID80X125S
To replace the discontinued SID80X125S, install the direct replacement SAID80X125S, which matches the 80 mm bore, 125 mm stroke, G3/8 port, and ISO 15552 mounting footprint without mechanical changes. When sizing both ways, verify your force requirements against the equal push/pull values of 2268 N @0.5 MPa and 3175 N @0.7 MPa; if you need less force, step down to a 63 mm bore, or step up to a 100 mm bore for 3681 N @0.5 MPa. Choose a double-rod configuration when you need anti-rotation stability or must drive two tools from one piston. Mounting options include Basic, FA, LB, and TC brackets. Keep the -S magnet option if you require position sensing. For this 125 mm stroke, side-load alignment is minimal, but for any stroke >=300 mm, ensure guide alignment to prevent rod binding. Remember that air cushions only decelerate near stroke end; for load holding on air loss, use an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID80X125S
- ✓ 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 SID80X125S FAQ
Yes, the SID80X125S is discontinued. The direct replacement is the SAID80X125S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 125 mm stroke, G3/8 port, and equal both-ways force, but features an upgraded piston seal for longer life.
Because it is a double-rod cylinder, force is equal both ways: 2268 N @0.5 MPa, 3175 N @0.7 MPa, and 4082 N @0.9 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID80X125S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID80X125S replacement — usually within 7-8 hours.