This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X200S, 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 SID125X200S
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X200S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 200mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X200S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X200S
- 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 SID125X200S
The AirTAC SID125X200S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force are equal at 5734 N @0.5 MPa, 8028 N @0.7 MPa, and 10321 N @0.9 MPa. This 125 mm bore uses a 32 mm rod, M27x2 threads, and G1/2 ports. The SID line is discontinued, but the SAID125X200S serves as a direct replacement retaining the exact mounting interface, stroke, and force.
A double-rod design prevents piston rotation and allows the rear rod to carry a sensor cam, while the SAI upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure. Note that air cushions only decelerate; for load holding without live air, use an external rod lock or SAIL/BSAI variant.
Airtac SID Series Double-Rod Cylinder SID125X200S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X200S |
| Bore size | Ø125 mm |
| Stroke | 200 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 SAID125X200S 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 SAID125X200S 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 SID125X200S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×200 | 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 SID125X200S Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously from a single piston, utilizing the equal both-ways 8028 N @0.7 MPa force to machine parts on both ends efficiently.
Anti-Rotation Transfer Gate
Employs the twin-rod architecture to prevent mechanical twisting during rapid part diversion on a 30-500 mm/s packaging line.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X200S with the SAID125X200S
To replace the discontinued SID125X200S, specify the SAID125X200S, which matches the 200 mm stroke, 125 mm bore, G1/2 port, and ISO 15552 mounting. Size both directions by verifying the equal both-ways force (5734 N @0.5 MPa) meets your needs, or step to neighboring bores. Choose a double-rod configuration when anti-rotation or dual-tool driving is required. Reuse FA, LB, or TC mounts. The -S suffix ensures a piston magnet for legacy CS1-B/DS1-B sensors. For strokes >=300 mm, verify side-load alignment to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X200S
- ✓ 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 SID125X200S FAQ
Yes, the SID125X200S is discontinued. The direct replacement is the SAID125X200S, which matches the ISO 15552 interface, 125 mm bore, 200 mm stroke, G1/2 port, and force. The SAI family also adds an upgraded piston seal.
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. It features a G1/2 air port, a 32 mm rod, M27x2 thread, and operates at 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X200S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X200S replacement — usually within 7-8 hours.