This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUD50X210, 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 SUD50X210
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X210 is a double-acting profile-type standard cylinder with a Ø50mm bore and 210mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUD50X210, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke210 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X210
- 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 SUD50X210
The AirTAC SUD50X210 is a double-acting, double-rod profile cylinder featuring an extruded aluminium barrel and a 210 mm stroke. Because a rod exits both ends on one piston, the push and pull forces are equal both ways at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. This discontinued model uses a 1/4 inch port, a Ø20 mm rod, and M16x1.5 rod threads. The direct replacement is the SAUD50X210, which matches the bore, stroke, force, port, and FA/LB mounting.
The double-rod design prevents piston rotation and allows the rear rod to drive a second tool simultaneously. Note this SKU lacks a magnet and cannot take a sensor. The SAUD upgrade switches to current CMSG/DMSG/EMSG sensors from the legacy CS1-B/DS1-B used here.
Airtac SUD Series Double Rod Cylinder SUD50X210 Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X210 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X210 |
| Bore size | Ø50 mm |
| Stroke | 210 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 SAUD50X210 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 SAUD50X210 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 SUD50X210
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×210 | 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 SUD50X210 Is Used
Dual-Tool Machining
Drives two opposing tools simultaneously using both extending rods, ensuring perfectly synchronized part transfer without adding a second cylinder.
Anti-Rotation Transfer
The dual-rod geometry prevents piston twisting during lateral push-off onto a moving conveyor belt, maintaining precise alignment.
Guided Vertical Lift
Lifts compact fixtures vertically where the equal both-ways force and inherent anti-rotation properties safely handle a 42 kg payload.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X210 with the SAUD50X210
To replace the SUD50X210, order the SAUD50X210 direct upgrade, which shares the 50 mm bore, 210 mm stroke, 1/4 inch port, and FA/LB mounting. Size both ways by checking the equal force ratings against neighbouring bores, ensuring the 825 N @0.5 MPa baseline meets your dynamic load. Choose a double-rod cylinder when you need anti-rotation stability or dual-tool actuation. Because this specific SKU has no magnet, it cannot support sensing; upgrading to the SAUD with CMSG/DMSG/EMSG sensors adds that capability. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear. Remember, the air cushion only decelerates near stroke end and does not hold loads on air loss—use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X210
- ✓ 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 SUD50X210 FAQ
Yes, the SUD50X210 is discontinued. The direct replacement is the SAUD50X210, which matches the 50 mm bore, 210 mm stroke, 1/4 inch port, and FA/LB mounting. The SAUD upgrade 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 bore dictates a fixed 1/4 inch port.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD50X210
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD50X210 replacement — usually within 7-8 hours.