This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID200X50, 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 SID200X50
The AirTAC Airtac SID Series Double-Rod Cylinder SID200X50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID200X50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAID200X50
- 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 SID200X50
The AirTAC SID200X50 is a discontinued double-acting double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making push and pull force equal at 15080 N @0.5 MPa. It features a 200mm bore, G3/4 port, M36x2 rod thread, and 50mm adjustable air cushions. The direct replacement is the SAID200X50, sharing the same interface, bore, stroke, and mounting.
The SAI upgrade uses an upgraded two Y-shaped one-way piston seal for low start-up pressure and long life. Because this SKU lacks a -S magnet, it cannot take a magnetic switch. A plain cylinder does not hold loads on air loss; the cushion only decelerates. For held loads use an external rod lock or SAIL/BSAI variant.
Airtac SID Series Double-Rod Cylinder SID200X50 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID200X50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID200X50 |
| Bore size | Ø200 mm |
| Stroke | 50 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 SAID200X50 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 SAID200X50 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 SID200X50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×50 | 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 SID200X50 Is Used
Equal-Force Pressing
Applies 15080 N @0.5 MPa clamping force on both the extend and retract strokes for double-sided part forming.
Dual-Tool Transfer
Uses the rod protruding from both ends to push a workpiece on extend and pull a secondary fixture on retract simultaneously.
Replacing the Airtac SID Series Double-Rod Cylinder SID200X50 with the SAID200X50
Replace the discontinued SID200X50 directly with the SAID200X50, reusing your existing ISO 15552 FA, LB, or TC mounts. Size both ways by checking neighbour bores: the 160mm bore yields 9425 N @0.5 MPa, while the 200mm bore provides 15080 N @0.5 MPa equal both ways. Choose a double-rod cylinder when you need equal force in both directions, anti-rotation stability, or to drive two tools. Since this non-magnetic SKU cannot use sensors, confirm external positioning requirements. For this 50mm stroke side-load is minimal, but for strokes >=300mm ensure guide alignment to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID200X50
- ✓ 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 SID200X50 FAQ
Yes, the SID200X50 is discontinued. The direct replacement is the SAID200X50, offering the same ISO 15552 interface, 200mm bore, 50mm stroke, G3/4 port, and mounting footprint.
Force is equal both ways: 15080 N @0.5 MPa, 21110 N @0.7 MPa, and 27141 N @0.9 MPa. The air port is G3/4, the rod thread is M36x2, and speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID200X50
Send us the quantity and destination. We confirm price, stock and lead time on the SAID200X50 replacement — usually within 7-8 hours.