This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X125, 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 SID200X125
The AirTAC Airtac SID Series Double-Rod Cylinder SID200X125 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 125mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID200X125, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke125 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID200X125
- 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 SID200X125
The AirTAC SID200X125 is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston, meaning both faces use the rod-side area and push and pull force are equal at 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. It features a 200mm bore, 40mm piston rod, M36x2 rod-end thread, G3/4 air port, and 50mm adjustable air cushions at each end. The direct replacement is the SAID200X125, matching the interface, stroke, and force.
Because the rod exits both ends, this design prevents rod-side rotation and lets the back rod carry a sensor cam or drive a second tool simultaneously. The SAI replacement uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU has no magnet (-S omitted), so it cannot take a magnetic switch.
Airtac SID Series Double-Rod Cylinder SID200X125 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID200X125 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X125 |
| Bore size | Ø200 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID200X125 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAID200X125 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 SID200X125
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | 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 SID200X125 Is Used
Dual-Tool Press Station
Drives two opposing forming tools simultaneously from a single piston, utilizing the equal both-ways force to ensure perfectly balanced pressing on both sides.
Anti-Rotation Divert Gate
The double-rod construction prevents the diverter arm from twisting under high lateral loads, maintaining precise alignment on high-speed packaging lines.
Symmetric Lift Platform
Lifts heavy pallets vertically using both rod ends to push and pull with identical 15080 N @0.5 MPa force, ensuring the platform remains level without binding.
Replacing the Airtac SID Series Double-Rod Cylinder SID200X125 with the SAID200X125
To replace the discontinued SID200X125, use the direct replacement SAID200X125, keeping the exact ISO 15552 mounting interface, G3/4 port, and 125mm stroke. When sizing both ways, verify the equal force fits your load; if you need less force, step down to a 160mm bore, or step up if you exceed the 27141 N @0.9 MPa limit. A double rod is right when you need anti-rotation stability or want to drive two tools from one cylinder. You can reuse FA, LB, or TC mounts. Since this SKU lacks the -S magnet, it cannot support sensing; if you need position feedback, select an -S model. For strokes of 300mm or longer, account for side-load deflection to prevent premature seal wear. Remember, a plain cylinder does not hold loads on air loss—the cushion only decelerates near stroke end—so use an external rod lock or the SAIL/BSAI lock variant for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID200X125
- ✓ 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 SID200X125 FAQ
Yes, the SID200X125 is discontinued. The direct replacement is the SAID200X125, which matches the ISO 15552 mounting interface, 200mm bore, 125mm stroke, G3/4 port, and force ratings. The SAI family also adds upgraded piston seals and SAIL/BSAI lock variants the SI line lacked.
Force is equal both ways at 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. It uses a G3/4 air port, has a speed range of 30-500 mm/s, and features 50mm adjustable air cushions at each end. The piston rod is 40mm with an M36x2 thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAID200X125
Send us the quantity and destination. We confirm price, stock and lead time on the SAID200X125 replacement — usually within 7-8 hours.