This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X600S, 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 SID125X600S
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X600S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 600mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X600S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke600 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X600S
- 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 SID125X600S
The AirTAC SID125X600S is a discontinued ISO 15552 double-rod, double-acting cylinder where a rod exits both ends on one piston. This geometry ensures push and pull force are equal at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. It features a 125mm bore, G1/2 air port, M27x2 rod thread, and 40mm adjustable cushions. The direct replacement is the SAID125X600S, sharing the same mounting interface, force, and stroke.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. A plain cylinder drifts on air loss; cushions only decelerate, so use an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID125X600S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X600S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X600S |
| Bore size | Ø125 mm |
| Stroke | 600 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 SAID125X600S 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 SAID125X600S 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 SID125X600S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×600 | 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 SID125X600S Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously with equal push and pull force, ensuring perfectly balanced cutting cycles.
Symmetric Transfer Conveyor
Transfers workpieces evenly from both ends using the second rod as a mechanical sync, preventing rotation during transit.
Cam-Driven Gauging Fixture
Uses the rear exiting rod to carry a sensor cam, triggering external position checks while the front rod handles the part.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X600S with the SAID125X600S
To replace the discontinued SID125X600S, install the SAID125X600S directly; it preserves the ISO 15552 mounting interface, 600mm stroke, G1/2 port, and equal-both-ways force. Size both directions by checking neighboring bores if you need less force, ensuring the application does not exceed the 5734 N @0.5 MPa safe threshold. A double rod is right when you need anti-rotation, a back rod to carry a sensor cam, or to drive two tools. Reuse FA, LB, or TC mounts. The -S magnet enables legacy CS1-B/DS1-B sensors. For the 600mm stroke, use external guides to prevent rod bending and side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X600S
- ✓ 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 SID125X600S FAQ
Yes, the SID125X600S is discontinued. The direct replacement is the SAID125X600S, which shares the same ISO 15552 interface, 125mm bore, 600mm stroke, G1/2 port, and equal-both-ways force.
Force is equal both ways: 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X600S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X600S replacement — usually within 7-8 hours.