This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X250S, 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 SID200X250S
The AirTAC Airtac SID Series Double-Rod Cylinder SID200X250S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 250mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID200X250S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID200X250S
- 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 SID200X250S
The AirTAC SID200X250S 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, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. This model is discontinued and is directly replaced by the SAID200X250S. The direct SAI successor shares the exact 200mm bore, 250mm stroke, G3/4 port, and ISO 15552 mounting interface, while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
With a 40mm rod, M36x2 thread, and 50mm adjustable cushions at each end, the SID200X250S operates at 30-500 mm/s. The dual-rod design prevents rotation and allows the back rod to drive a second tool or carry a sensor cam. Note that a plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID200X250S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID200X250S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X250S |
| Bore size | Ø200 mm |
| Stroke | 250 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 SAID200X250S 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 SAID200X250S 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 SID200X250S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×250 | 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 SID200X250S Is Used
Twin-Tool Machining Station
Uses the dual-rod architecture to drive a machining tool on the front rod and a secondary clamp on the rear rod simultaneously, keeping force equal both ways.
Anti-Rotation Divert Gate
The double-rod design prevents piston rotation during heavy lateral diverting tasks on a high-speed packaging line, ensuring smooth gate actuation.
Heavy Pallet Lift Transfer
Leverages the 15080 N @0.5 MPa equal force to lift and lower heavy pallets, using the back rod to mount an external position sensor cam.
Replacing the Airtac SID Series Double-Rod Cylinder SID200X250S with the SAID200X250S
To replace the discontinued SID200X250S, install the direct replacement SAID200X250S, matching the 200mm bore, 250mm stroke, G3/4 port, and ISO 15552 mounting interface (Basic, FA, LB, TC, FTC, TCM1, TCM2). Size both ways using the equal both ways force: 15080 N @0.5, 21110 N @0.7, and 27141 N @0.9 MPa. If force is excessive, step down to the 160mm bore (9425 N @0.5); if insufficient, confirm custom needs. Choose a double-rod cylinder when anti-rotation is required or when the back rod must drive a second tool. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. For this 250mm stroke, side-load alignment is minimal, but for strokes >=300mm, ensure guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID200X250S
- ✓ 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 SID200X250S FAQ
Yes, the SID200X250S is discontinued. The direct replacement is the SAID200X250S. It shares the same ISO 15552 interface, 200mm bore, 250mm stroke, G3/4 port, and mounting, but features an upgraded two Y-shaped one-way piston seal for longer life.
Because it is a double-rod cylinder, force is equal both ways: 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. Speed is 30-500 mm/s. It features a 40mm rod, M36x2 thread, and 50mm adjustable cushions. The cushion only decelerates; use an external rod lock for load holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAID200X250S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID200X250S replacement — usually within 7-8 hours.