This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X80, 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 SID125X80
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X80 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 80mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X80, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X80
- 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 SID125X80
The AirTAC SID125X80 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. Both faces use the rod-side area, so push and pull force are equal at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. This bore uses a G1/2 air port, a Ø32 mm rod with an M27x2 thread, and 40 mm adjustable cushions. This SID model is discontinued; the direct replacement is the SAID125X80, sharing the same interface, bore, stroke, and mount.
The SAID successor adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. Because the second rod resists torsional deflection, a double-rod layout suits anti-rotation tasks or driving two tools in parallel. With no -S suffix, this SKU lacks a magnet and cannot take a switch. 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 SID125X80 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X80 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X80 |
| Bore size | Ø125 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID125X80 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAID125X80 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 SID125X80
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SID125X80 Is Used
Twin-Tool Synchronization
Drives two opposing forming tools from one piston, utilizing the equal push and pull force of 8028 N @0.7 MPa on both rod ends for balanced, simultaneous work.
Symmetrical Diverting Gate
Actuates a centering diverter on a heavy-duty conveyor, using the 40 mm adjustable cushions to decelerate the 125 mm bore smoothly at both stroke ends.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X80 with the SAID125X80
To replace the discontinued SID125X80, install the direct replacement SAID125X80, which matches the ISO 15552 mounting interface, G1/2 port, and 80 mm stroke. Size both directions by the equal force: if 8028 N @0.7 MPa is excessive, step down to a 100 mm bore (5153 N), or if insufficient, step up to a 160 mm bore (13194 N). A double rod is correct when you need anti-rotation, a back rod to carry a sensor cam, or to drive two tools. Reuse FA, LB, or TC mounts. As this SKU has no -S magnet, sensing is impossible. For stroke lengths >=300 mm, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X80
- ✓ 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 SID125X80 FAQ
Yes, the AirTAC SID125X80 is discontinued. The direct replacement is the SAID125X80, which shares the same ISO 15552 mounting interface, 125 mm bore, 80 mm stroke, and G1/2 port. The SAI family also adds upgraded seal variants and lock options the SI line lacked.
Because it is a double-rod cylinder, force is equal both ways at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. Operating pressure is 0.15-1.0 MPa, and speed is 30-500 mm/s. A plain cylinder cannot hold a load on air loss; the 40 mm cushion only decelerates near stroke end, so use an external rod lock for held loads.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X80
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X80 replacement — usually within 7-8 hours.