This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X600, 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 SID125X600
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X600 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 SAID125X600, 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 → SAID125X600
- 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 SID125X600
The AirTAC SID125X600 is a discontinued 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. It features a 125 mm bore, 600 mm stroke, 32 mm rod, M27x2 thread, and a fixed G1/2 port. The direct replacement is the SAID125X600, which reuses the same mounting interface and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because this SKU lacks the -S suffix, it has no magnet and cannot accept a magnetic switch. The dual-rod design prevents rotation and lets the back rod carry a sensor cam or drive a second tool. Note that air cushions only decelerate the piston near stroke end; they do not hold loads on air loss, so use an external rod lock or SAIL/BSAI variant for holding.
Airtac SID Series Double-Rod Cylinder SID125X600 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X600 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X600 |
| 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 SAID125X600 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 SAID125X600 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 SID125X600
| 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 SID125X600 Is Used
Twin-Tool Machining Station
Drives two opposing machining heads simultaneously using both extending rods, ensuring perfectly synchronized cutting cycles without requiring a separate cylinder.
Anti-Rotation Transfer Gate
Actuates a heavy transfer gate on a 125 mm bore where single-rod torsional sway is unacceptable, using the dual-rod geometry to maintain strict alignment.
External Cam Positioning
Uses the rear rod extension to mechanically trigger external limit valves at precise intervals, bypassing the lack of internal magnetic switches on this SKU.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X600 with the SAID125X600
To replace the discontinued SID125X600, install the SAID125X600 directly; it matches the 125 mm bore, 600 mm stroke, G1/2 port, and ISO 15552 mounting dimensions without bracket changes. When sizing both ways, verify your load against the equal 5734 N @0.5 MPa force, or step to a neighbouring bore if more margin is needed. A double rod is right when you need anti-rotation stability or a back rod to drive a second mechanism. Choose Basic, FA, LB, or TC mounts. Since this is a non-magnet model, sensing requires external methods. For the 600 mm stroke, use external guides to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X600
- ✓ 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 SID125X600 FAQ
Yes, the SID125X600 is discontinued. The direct replacement is the SAID125X600, which shares the same ISO 15552 interface, 125 mm bore, 600 mm stroke, G1/2 port, and equal both-ways force, but adds an upgraded piston seal.
Force is equal both ways: 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. It uses a G1/2 port and 40 mm adjustable cushions at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X600
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X600 replacement — usually within 7-8 hours.