This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID50X150, 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 SID50X150
The AirTAC Airtac SID Series Double-Rod Cylinder SID50X150 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 150mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID50X150, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke150 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAID50X150
- 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 SID50X150
The AirTAC SID50X150 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston. Because both faces use the rod-side area, push and pull force are equal at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. This model is discontinued and end-of-life; the direct replacement is the SAID50X150 (SAID family), matching the 50mm bore, 150mm stroke, G1/4 port, and ISO 15552 mounting interface. The SAI replacement uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
With a Ø20mm rod, M16x1.5 thread, and 30mm adjustable air cushions at each end, it operates at 30-800 mm/s. This SKU has no -S magnet and cannot take a magnetic switch. A plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end. For held loads, use an external rod lock or SAIL/BSAI variant.
Airtac SID Series Double-Rod Cylinder SID50X150 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID50X150 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID50X150 |
| Bore size | Ø50 mm |
| Stroke | 150 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 SAID50X150 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 SAID50X150 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 SID50X150
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×150 | 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 SID50X150 Is Used
Synchronized Transfer
Drives opposing conveyor pop-up stops simultaneously using both rod ends, ensuring perfectly timed material flow without phase delay.
Anti-Rotation Press
Applies 1154 N @0.7 MPa clamping force on a workpiece where the twin rods prevent torsional deflection during heavy stamping.
Dual-Tool Shuttle
Mounts a pick head on one end and a push blade on the other, allowing one cylinder to load and eject parts in a single reciprocating cycle.
Replacing the Airtac SID Series Double-Rod Cylinder SID50X150 with the SAID50X150
To replace the discontinued SID50X150, specify the SAID50X150 direct, which reuses the exact ISO 15552 mounting interface and G1/4 port. Size both ways by confirming the 825 N @0.5 MPa equal force is sufficient, or step to the neighbouring 63mm bore for higher loads. 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 the -S magnet, it cannot support sensing; add an external cam if needed. For this 150mm stroke, side-load is minimal, but for strokes >=300mm ensure guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID50X150
- ✓ 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 SID50X150 FAQ
Yes, the SID50X150 is discontinued. The direct replacement is the SAID50X150, which matches the 50mm bore, 150mm stroke, G1/4 port, and ISO 15552 mounting interface, while adding an upgraded piston seal.
Force is equal both ways at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The air port is G1/4, the rod is Ø20mm with an M16x1.5 thread, and speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID50X150
Send us the quantity and destination. We confirm price, stock and lead time on the SAID50X150 replacement — usually within 7-8 hours.