This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X350, 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 SID200X350
The AirTAC Airtac SID Series Double-Rod Cylinder SID200X350 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 350mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID200X350, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke350 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID200X350
- 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 SID200X350
The AirTAC SID200X350 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. Both faces use the rod-side area, so push and pull force are equal at 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. This SKU has no -S magnet and cannot take a magnetic switch. The bore dictates a G3/4 port, an M36x2 rod thread, and 50 mm adjustable air cushions at each end. Operating pressure is 0.15-1.0 MPa with a 1.5 MPa proof rating, and speed is 30-500 mm/s.
This SID model is discontinued and end-of-life. The direct replacement is the SAID200X350, matching the ISO 15552 interface, 200 mm bore, 350 mm stroke, force, port, and mounting. The SAI family uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life, and adds SAIL and BSAI lock variants the SI line lacked. Note that a plain cylinder drifts on air loss; the cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID200X350 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID200X350 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X350 |
| Bore size | Ø200 mm |
| Stroke | 350 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 SAID200X350 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 SAID200X350 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 SID200X350
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×350 | 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 SID200X350 Is Used
Equal-Force Pressing
Applies 21110 N @0.7 MPa clamping force on both extend and retract strokes to form heavy parts without stroke direction force drop.
Dual-Tool Transfer
Uses the second rod exiting the rear to drive a secondary mechanism or tool simultaneously with the main stroke.
Replacing the Airtac SID Series Double-Rod Cylinder SID200X350 with the SAID200X350
To replace the discontinued SID200X350, use the direct replacement SAID200X350, which reuses the exact ISO 15552 mounting interface and G3/4 port. Size both ways by checking neighbor bores if you need to adjust the equal both-ways force, but this 200 mm bore delivers 15080 N @0.5 MPa. A double rod is right when you need anti-rotation stability or must drive two tools from one piston. Reuse FA, LB, or TC mounts. Because this SKU lacks an -S magnet, it cannot take a sensor. For the 350 mm stroke, add external guides to prevent rod-bending under side-load. A plain cylinder does not hold loads on air loss; use an external rod lock or pilot-operated check valve for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID200X350
- ✓ 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 SID200X350 FAQ
Yes, the SID200X350 is discontinued. The direct replacement is the SAID200X350, which matches the ISO 15552 interface, 200 mm bore, 350 mm stroke, G3/4 port, and mounting hardware.
Force is equal both ways at 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. Speed is 30-500 mm/s. It uses a G3/4 port and 50 mm adjustable cushions. It cannot hold loads on air loss as the cushion only decelerates.
Related AirTAC SAI Cylinders
Request a Quote for the SAID200X350
Send us the quantity and destination. We confirm price, stock and lead time on the SAID200X350 replacement — usually within 7-8 hours.