This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X25, 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 SID200X25
The AirTAC Airtac SID Series Double-Rod Cylinder SID200X25 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 25mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID200X25, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke25 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID200X25
- 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 SID200X25
The AirTAC SID200X25 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, ensuring push and pull force is equal both ways at 15080 N @0.5 MPa. This SKU is discontinued and drops directly into the SAID200X25, matching the 200mm bore, 25mm stroke, G3/4 port, and mounting interface without bracket changes. Because this unit lacks the -S magnet, it cannot accept a magnetic switch for position sensing.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. A double-rod design prevents rod rotation and lets the back rod drive a second tool. 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 SID200X25 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID200X25 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X25 |
| Bore size | Ø200 mm |
| Stroke | 25 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 SAID200X25 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 SAID200X25 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 SID200X25
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×25 | 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 SID200X25 Is Used
Twin-Tool Machining Station
Drives two opposing machining heads simultaneously with equal both ways force, ensuring perfectly balanced cutting cycles without rod rotation.
Replacing the Airtac SID Series Double-Rod Cylinder SID200X25 with the SAID200X25
To replace the discontinued SID200X25, install the SAID200X25 direct using the same ISO 15552 FA, LB, or TC mounting brackets and G3/4 port. Size both ways by verifying the equal both ways force (15080 N @0.5 MPa) handles your load, or step to a neighbouring bore if more capacity is needed. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools simultaneously. Select an -S magnet model if you require sensor switches, as this no-S SKU cannot take them. For this 25mm stroke, side-load is negligible, but always guide the rod on longer strokes.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID200X25
- ✓ 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 SID200X25 FAQ
Yes, the SID200X25 is discontinued. The direct replacement is the SAID200X25, sharing the same ISO 15552 interface, 200mm bore, 25mm stroke, G3/4 port, and equal both ways force.
Force is equal both ways: 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. It features a 40mm rod, M36x2 thread, 50mm adjustable cushion at each end, and operates at 30-500 mm/s. The air cushion only decelerates near stroke end; it does not hold loads on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the SAID200X25
Send us the quantity and destination. We confirm price, stock and lead time on the SAID200X25 replacement — usually within 7-8 hours.