This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUD50X75S, 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 SUD50X75S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X75S is a double-acting profile-type standard cylinder with a Ø50mm bore and 75mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUD50X75S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke75 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X75S
- 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 SUD50X75S
The AirTAC SUD50X75S is a discontinued double-acting double-rod profile cylinder. A rod exits both ends on one piston, meaning both faces use the rod-side area, so push and pull force are equal at 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The direct replacement is the SAUD50X75S, matching the 50 mm bore, 75 mm stroke, 1/4" port, and SC-series FA/LB mounts. The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore.
Because the rear rod can carry a sensor cam or drive a second tool while resisting rotation, the double-rod layout adds mechanical stability. With the -S magnet, this unit used legacy CS1-B/DS1-B switches, whereas the SAUD replacement uses current CMSG/DMSG/EMSG sensors. Note that the air cushion only decelerates near stroke end; an external rod lock is required to hold loads on air loss.
Airtac SUD Series Double Rod Cylinder SUD50X75S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X75S |
| Bore size | Ø50 mm |
| Stroke | 75 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 SAUD50X75S 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 SAUD50X75S 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 SUD50X75S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×75 | 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 SUD50X75S Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously from one piston, utilizing the equal both-ways force to maintain balanced cutting or clamping pressure on both ends.
Anti-Rotation Transfer Gate
Uses the twin rods exiting both ends to prevent mechanical rotation during rapid part diversion on a packaging line, ensuring precise lateral transfers.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X75S with the SAUD50X75S
To replace the SUD50X75S, order the SAUD50X75S for an direct swap sharing the 50 mm bore, 75 mm stroke, M16x1.5 rod thread, 1/4" port, and FA/LB mounting. When sizing both ways, verify the equal 825 N @0.5 MPa force is sufficient, or step to the 63 mm bore for higher loads, or down to the 40 mm bore if lower force is acceptable. Choose a double-rod design when you need anti-rotation stability or must drive two tools simultaneously. For the -S magnet option, upgrade from legacy CS1-B/DS1-B to CMSG/DMSG/EMSG sensors. For strokes of 300 mm or longer, carefully manage side-load moments to prevent guide wear. Remember, the cushion decelerates but does not lock; use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X75S
- ✓ 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 SUD50X75S FAQ
Yes, the SUD50X75S is discontinued. The direct replacement is the SAUD50X75S, which matches the 50 mm bore, 75 mm stroke, 1/4" port, and FA/LB mounting. You will only need to upgrade the -S magnet sensors from legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG series.
Because the double-rod design uses the rod-side area on both faces, push and pull force are equal: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The fixed air port size for the 50 mm bore is 1/4". The cylinder operates at 0.15-1.0 MPa with an adjustable 21 mm cushion at each end.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD50X75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD50X75S replacement — usually within 7-8 hours.