This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X700S, 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 SID125X700S
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X700S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 700mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X700S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X700S
- 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 SID125X700S
The AirTAC SID125X700S is a discontinued ISO 15552 double-acting double-rod cylinder. A Ø32 mm rod exits both ends of the 125 mm bore, meaning push and pull forces are equal both ways at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. It features a G1/2 air port, M27x2 rod thread, and 40 mm adjustable cushions. The direct replacement is the SAID125X700S, sharing the same interface, stroke, and mounting.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. For this 700 mm stroke, external guides are recommended to prevent rod bending under side loads. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SID Series Double-Rod Cylinder SID125X700S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X700S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X700S |
| Bore size | Ø125 mm |
| Stroke | 700 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 SAID125X700S 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 SAID125X700S 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 SID125X700S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | 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).
Where the Airtac SID Series Double-Rod Cylinder SID125X700S Is Used
Equal-Force Stamping
Drives a stamping die where the equal both-ways 8028 N @0.7 MPa force ensures consistent ejection and pressing without requiring a larger single-rod push cylinder.
Dual-Tool Transfer
Simultaneously drives two opposing grippers on a 700 mm transfer line, using the second rod end to carry a tool while maintaining synchronous equal force.
Anti-Rotation Web Guiding
Guides a heavy web material where the double-rod construction prevents piston rotation, keeping the M27x2 threaded tooling perfectly aligned over the 700 mm travel.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X700S with the SAID125X700S
To replace the discontinued SID125X700S, use the SAID125X700S directly—it matches the ISO 15552 mounting interface, G1/2 port, and equal-both-ways force. Size both directions by checking neighboring bores (100 mm or 160 mm) if your fixture allows, ensuring the equal push/pull force meets the requirement. A double rod is right when you need anti-rotation stability, or when the back rod carries a sensor cam. Reuse FA, LB, or TC mounts. The -S magnet enables position sensing. For this 700 mm stroke, add external guides to handle side-load and rod-bending risks.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X700S
- ✓ 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 SID125X700S FAQ
Yes, the AirTAC SID125X700S is discontinued. The direct replacement is the SAID125X700S. It shares the same ISO 15552 interface, 125 mm bore, 700 mm stroke, G1/2 port, and equal-both-ways force. The SAI family also adds an upgraded piston seal and SAIL/BSAI lock variants.
Force is equal both ways: 5734 N @0.5 MPa, 8028 N @0.7 MPa, 10321 N @0.9 MPa. Speed is 30-500 mm/s. The G1/2 port and 40 mm cushions are standard. It does NOT hold loads on air loss; the cushion only decelerates. For held loads, use an external rod lock or the SAIL/BSAI variant.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X700S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X700S replacement — usually within 7-8 hours.