This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X700, 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 SID125X700
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X700 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 SAID125X700, 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 → SAID125X700
- 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 SID125X700
The AirTAC SID125X700 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making push and pull force equal at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. Because both faces use the rod-side area, you never get a larger single-rod push value. This bore uses a G1/2 air port, a Ø32 mm rod with an M27x2 thread, and 40 mm adjustable air cushions at each end. As the SID line is discontinued, the direct replacement is the SAID125X700—same ISO 15552 mounting interface, 700 mm stroke, and force.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. This non-magnet SKU (-S omitted) cannot take a magnetic switch. A plain cylinder does not hold its load on air loss; the cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID125X700 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X700 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X700 |
| 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 SAID125X700 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 SAID125X700 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 SID125X700
| 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 SID125X700 Is Used
Twin-Tool Machining Station
Drives two opposing machining heads from a single piston, utilizing the equal both-ways force to maintain consistent cutting pressure on both strokes without requiring separate cylinders.
Anti-Rotation Transfer Gate
Uses the dual-rod architecture to prevent mechanical twisting during long 700 mm transfers across a conveyor lane, ensuring the payload remains perfectly aligned.
Symmetric Pallet Pusher
Pushes pallets symmetrically from a central mount, using the rod-side area on both faces to deliver 8028 N @0.7 MPa of equal force in both directions.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X700 with the SAID125X700
To replace the discontinued SID125X700, install the direct replacement SAID125X700, which preserves the ISO 15552 interface, G1/2 port, and 700 mm stroke. Size both ways by checking neighbour bores if you need less or more force, remembering this double-rod design provides equal push/pull force (5734 N @0.5 MPa) unlike a single-rod cylinder. A double rod is right when you need anti-rotation stability or want to drive two tools from one piston. Reuse FA, LB, or TC mounts. For the 700 mm stroke, add external guides to prevent rod bending under side-load. This SKU lacks the -S magnet, so it cannot carry legacy CS1-B/DS1-B sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X700
- ✓ 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 SID125X700 FAQ
Yes, the SID125X700 is discontinued. The direct replacement is the SAID125X700. It shares the same ISO 15552 mounting interface, 125 mm bore, 700 mm stroke, G1/2 port, and equal both-ways force, but adds an upgraded two Y-shaped one-way piston seal for longer life.
Because it is a double-rod cylinder, force is equal both ways: 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. The operating speed is 30-500 mm/s. Note that a plain cylinder does not hold loads on air loss; the 40 mm cushions only decelerate near stroke end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X700
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X700 replacement — usually within 7-8 hours.