This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X200S, 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 SID50X200S
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X200S 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 SAID50X200S, 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 → SAID50X200S
- 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 SID50X200S
The AirTAC SID50X200S is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, making push and pull force equal at 825 N @0.5 MPa. Because both faces use the identical rod-side area, you never see a larger single-rod push value. This discontinued model drops directly into the SAID50X200S replacement—same 50 mm bore, 200 mm stroke, G1/4 port, M16x1.5 thread and 30 mm cushion. The SAI upgrade uses a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
With equal both-ways force, the back rod can carry a sensor cam or drive two tools simultaneously while resisting rotation. The built-in -S magnet works with legacy CS1-B/DS1-B switches. 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 SID50X200S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X200S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X200S |
| 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 SAID50X200S 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 SAID50X200S 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 SID50X200S
| 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 SID50X200S Is Used
Dual-Tool Drive Station
Uses both extending rods to drive two separate operations simultaneously with equal 825 N force at 0.5 MPa.
Anti-Rotation Transfer
The twin-rod geometry prevents mechanical twist during part transfer across the 200 mm stroke.
Cam-Actuated Sensing
The rear rod carries a sensor cam for legacy CS1-B/DS1-B switches while the front rod performs work.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X200S with the SAID50X200S
To replace the discontinued SID50X200S, install the direct replacement SAID50X200S which reuses the exact ISO 15552 mounting interface and G1/4 port. Size both directions by equal force: if 825 N @0.5 MPa is insufficient, step up to the 63 mm bore (1402 N), or drop to the 40 mm bore (528 N) if lower force is needed. A double rod is right when you need anti-rotation, a back-rod sensor cam, or dual-tool driving. Reuse FA, LB or TC mounts, and keep the -S magnet for position sensing. For stroke lengths >=300, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X200S
- ✓ 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 SID50X200S FAQ
Yes, the SID50X200S is discontinued. The direct replacement is the SAID50X200S. It shares the same ISO 15552 interface, 50 mm bore, 200 mm stroke, G1/4 port, and mounting, but adds an upgraded two Y-shaped one-way piston seal.
Force is equal both ways: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. It uses a G1/4 air port, a 20 mm rod, M16x1.5 thread, and 30 mm adjustable cushions.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X200S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X200S replacement — usually within 7-8 hours.