This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUD50X15, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAU replacement uses the same profile body, bore, stroke, force and SC-series mounting. It moves to the current CMSG / DMSG / EMSG sensor switches (the SU used CS1-B / DS1-B) and adds the SAUF valve-integrated option.
Airtac SUD Series Double Rod Cylinder SUD50X15
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X15 is a double-acting profile-type standard cylinder with a Ø50mm bore and 15mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUD50X15, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke15 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X15
- 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 SUD Series Double Rod Cylinder SUD50X15
The AirTAC SUD50X15 is a double-acting, double-rod profile cylinder that is officially discontinued; the direct replacement is the SAUD50X15, sharing the same 50mm bore, 15mm stroke, 1/4" port, and FA/LB mounting. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore. This SKU has no magnet (-S omitted), so it cannot take a magnetic switch, though the SAUD upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The dual-rod design prevents piston rotation and allows the back rod to drive a second tool simultaneously. Operating pressure is 0.15-1.0 MPa with a 21mm adjustable air cushion at each end. Note that a plain cylinder does not hold loads on air loss—the cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD50X15 Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X15 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X15 |
| Bore size | Ø50 mm |
| Stroke | 15 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| 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, 21 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUD50X15 carries the same 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 SAUD50X15 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUD Series Double Rod Cylinder SUD50X15
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×15 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SU-family variants: SUD (double rod), SUJ (adjustable stroke) — each maps to its SAU equivalent (SUD→SAUD, SUJ→SAUJ). The current SAU line adds the SAUF valve-integrated option.
Where the Airtac SUD Series Double Rod Cylinder SUD50X15 Is Used
Dual-Tool Synchronizing
Drives two separate operations simultaneously from one piston, using the front and back rods to push opposing tools with equal 825 N force at 0.5 MPa.
Anti-Rotation Guiding
The dual-rod geometry prevents piston twist during short 15mm clamping or positioning movements where rotational stability is critical.
Equal-Force Transfer
Transfers workpieces on a line where the return stroke must apply the same 1154 N @0.7 MPa push force as the forward stroke to maintain consistent tension.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X15 with the SAUD50X15
To replace the discontinued SUD50X15, order the direct replacement SAUD50X15, which matches the 50mm bore, 15mm stroke, 1/4" port, M16x1.5 rod thread, and FA/LB mounting. Choose a double-rod cylinder when you need equal force both ways, anti-rotation stability, or a back rod to drive a second mechanism. Because this SKU lacks a magnet, you cannot mount sensors; if sensing is required, select an SAUD with the -S option and use CMSG/DMSG/EMSG switches instead of the old CS1-B/DS1-B. If you need higher force, the neighboring 63mm bore provides 1402 N @0.5 MPa both ways. For side-load limits on strokes >=300mm, confirm the bearing capacity from the official datasheet.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X15
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac SUD Series Double Rod Cylinder SUD50X15 FAQ
Yes, the SUD50X15 is discontinued. The direct replacement is the SAUD50X15, which shares the same 50mm bore, 15mm stroke, 1/4" port, and FA/LB mounting. The SAUD also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
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 air port is 1/4".
Request a Quote for the SAUD50X15
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD50X15 replacement — usually within 7-8 hours.