This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X200, 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 SID50X200
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X200 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 200mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID50X200, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID50X200
- 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 SID50X200
The AirTAC SID50X200 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, making push and pull force equal at 825 N @0.5 MPa. This SKU has no -S magnet and cannot carry a switch. It is discontinued; the direct replacement is the SAID50X200, retaining the G1/4 port, M16x1.5 thread, and 30 mm cushions.
The SAI upgrade uses a two-piece Y-shaped piston seal for lower start-up pressure. A plain cylinder drifts on air loss; cushions only decelerate, so use an external rod lock for held loads.
Airtac SID Series Double-Rod Cylinder SID50X200 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X200 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X200 |
| Bore size | Ø50 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID50X200 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAID50X200 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 SID50X200
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | 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 SID50X200 Is Used
Twin-Tool Machining
Drives two opposing machining heads from a single piston, utilizing the equal both-ways force to maintain balanced cutting pressure.
Symmetric Transfer
Pushes and retracts workpieces on a conveyor with identical 825 N force in both directions, ensuring consistent cycle timing.
Anti-Rotation Lift
Lifts guided vertical loads up to 42 kg using the dual rods to prevent torsional twist without external linear bearings.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X200 with the SAID50X200
Replace the discontinued SID50X200 directly with the SAID50X200, reusing the exact ISO 15552 mounting interface and FA, LB, or TC brackets. Because force is equal both ways, size it by checking neighboring bores against the 825 N @0.5 MPa rating. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools from one piston. This non-magnetic SKU cannot use sensors. For stroke lengths over 300 mm, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X200
- ✓ 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 SID50X200 FAQ
Yes, the SID50X200 is discontinued. The direct replacement is the SAID50X200, which matches the ISO 15552 mounting, 50 mm bore, 200 mm stroke, G1/4 port, and equal both-ways force.
The G1/4 ported cylinder provides equal push and pull force of 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. It operates at 30-800 mm/s with 30 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X200
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X200 replacement — usually within 7-8 hours.