This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X600S, 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 SID50X600S
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X600S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 600mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID50X600S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke600 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID50X600S
- 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 SID50X600S
The AirTAC SID50X600S 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, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. This 50 mm bore uses a G1/4 port, a 20 mm rod with M16x1.5 thread, and 30 mm adjustable cushions. As the SID line is discontinued, the direct replacement is the SAID50X600S, which reuses the same mounting interface and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
The rear rod can carry a sensor cam or drive a second tool while resisting rotation. This -S model includes a piston magnet for legacy CS1-B/DS1-B switches. Note that air cushions only decelerate near stroke end; they do not hold loads on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID50X600S Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X600S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X600S |
| Bore size | Ø50 mm |
| Stroke | 600 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 SAID50X600S 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 SAID50X600S 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 SID50X600S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×600 | 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 SID50X600S Is Used
Dual-Tool Machining Station
Drives two opposing machining heads from a single piston, utilizing the equal both-ways force to ensure consistent cutting pressure on both strokes.
Anti-Rotation Transfer Unit
Lifts and transfers parts along a 600 mm path where the second rod prevents rotational drift, maintaining strict alignment without external guides.
Rear-Cam Sensing Press
Uses the extended rear rod to carry a sensor cam for precise end-of-stroke confirmation while the front rod performs the pressing action.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X600S with the SAID50X600S
To replace the discontinued SID50X600S, install the SAID50X600S directly; it matches the 50 mm bore, 600 mm stroke, G1/4 port, and ISO 15552 mounting dimensions without bracket changes. Size both directions by the equal force output: if 1154 N @0.7 MPa is insufficient, step up to the 63 mm bore (1962 N), or drop to the 40 mm bore (739 N) if less force is needed. A double rod is the right choice when you need anti-rotation stability, want to drive two tools from one piston, or need a rear rod to mount a sensor cam. Reuse FA, LB, or TC mounts. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B sensors (current AirTAC switches are used on the SAI replacement). For this 600 mm stroke, external guides are recommended to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X600S
- ✓ 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 SID50X600S FAQ
Yes, the SID50X600S is discontinued. The direct replacement is the SAID50X600S, which shares the same ISO 15552 interface, 50 mm bore, 600 mm stroke, G1/4 port, and mounting brackets, but features an upgraded piston seal.
Because it is a double-rod cylinder, force is equal both ways: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The bore is 50 mm, the port is G1/4, and it operates at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X600S
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X600S replacement — usually within 7-8 hours.