This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X125, 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 SID125X125
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X125 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 125mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X125, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X125
- 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 SID125X125
The AirTAC SID125X125 is a discontinued double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force is equal both ways at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. It features a 125mm bore, M27x2 rod thread, G1/2 port, and 40mm adjustable cushions. The direct replacement is the SAID125X125, which reuses the same mounting interface and adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure.
Because the second rod occupies the rear chamber, both faces use the rod-side area, making it ideal for anti-rotation or driving two tools simultaneously. This non-magnet SKU cannot take a switch. Note that a plain cylinder does not hold loads on air loss; use an external rod lock or SAIL/BSAI variant for holding.
Airtac SID Series Double-Rod Cylinder SID125X125 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X125 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X125 |
| Bore size | Ø125 mm |
| Stroke | 125 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 SAID125X125 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 SAID125X125 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 SID125X125
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×125 | 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 SID125X125 Is Used
Twin-Tool Synchronizer
Drives two independent workstations from one centerline using both extending rods, ensuring perfectly synchronized machining or clamping operations without phase delay.
Symmetrical Transfer Unit
Pushes and pulls pallets along a conveyor with identical 5734 N force in both directions, ensuring consistent deceleration via the 40mm cushions at each end.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X125 with the SAID125X125
To replace the discontinued SID125X125, install the SAID125X125 directly; it matches the 125mm bore, 125mm stroke, G1/2 port, and ISO 15552 mounting. Size both ways by verifying the equal force (5738N @0.5MPa) handles your load, or step to neighbour bores (100/160) if capacity changes. A double rod is right when you need anti-rotation, a rear sensor cam surface, or to drive two tools. Mount using FA, LB, or TC brackets. This SKU lacks the -S magnet, so no sensors can be attached. For strokes >=300, verify side-load limits. Speed is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X125
- ✓ 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 SID125X125 FAQ
Yes, the SID125X125 is discontinued. The direct replacement is the SAID125X125. It shares the identical ISO 15552 interface, 125mm bore, stroke, G1/2 port, and mounting, but features an upgraded 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 air port is G1/2. Note that air cushions only decelerate; they do not hold loads on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X125
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X125 replacement — usually within 7-8 hours.