This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X80S, 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 SID125X80S
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X80S 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 SAID125X80S, 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 → SAID125X80S
- 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 SID125X80S
The AirTAC SID125X80S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal push and pull force of 5734 N at 0.5 MPa. The bore is 125 mm, the port is G1/2, and the rod thread is M27x2. This SID model is discontinued; the direct replacement is SAID125X80S, retaining the same interface and stroke. The SAI family uses an upgraded two Y-shaped one-way piston seal for low start-up pressure.
Because both faces use the rod-side area, force is equal both ways (8028 N at 0.7 MPa, 10321 N at 0.9 MPa). The back rod can carry a sensor cam or drive two tools, and the -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. A plain cylinder drifts on air loss; cushions only decelerate, so use SAIL or BSAI for held loads.
Airtac SID Series Double-Rod Cylinder SID125X80S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X80S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X80S |
| 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 SAID125X80S 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 SAID125X80S 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 SID125X80S
| 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 SID125X80S Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously from a single piston, utilizing the equal both-ways force to maintain balanced cutting pressure.
Anti-Rotation Transfer Gate
The twin-rod architecture prevents mechanical twist during rapid part diversion on high-speed packaging lines.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X80S with the SAID125X80S
To replace the discontinued SID125X80S, install the SAID125X80S directly; it preserves the G1/2 port, M27x2 thread, 40 mm cushion, and ISO 15552 mounting. Size both ways by verifying the equal force requirement against neighbouring bores, ensuring the 5734 N output at 0.5 MPa is sufficient. Choose a double-rod configuration when you need anti-rotation, dual-tool driving, or a back-rod sensor cam. Mounting options include Basic, FA, LB, and TC. The -S magnet enables position sensing. For stroke lengths of 300 mm or more, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X80S
- ✓ 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 SID125X80S FAQ
Yes, the SID125X80S is discontinued. The direct replacement is the SAID125X80S, which shares the same ISO 15552 mounting interface, 125 mm bore, 80 mm stroke, G1/2 port, and equal both-ways force.
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, speed is 30-500 mm/s, and it features a 40 mm adjustable cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X80S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X80S replacement — usually within 7-8 hours.