This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD50X125SH — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD50X125SH in place of this model. 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 SUD50X125SH
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X125SH is a double-acting profile-type standard cylinder with a Ø50mm bore and 125mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD50X125SH, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X125SH
About the Airtac SUD Series Double Rod Cylinder SUD50X125SH
The AirTAC SUD50X125SH is a double-acting, double-rod profile cylinder featuring a 50mm bore, 125mm stroke, and a 1/4" port. 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. This SUD model is discontinued; the exact drop-in replacement is the SAUD50X125SH, which retains the same body, stroke, force, and FA/LB mounting. This unit includes a piston magnet for legacy CS1-B/DS1-B switches, while the SAUD replacement uses current CMSG/DMSG/EMSG sensors. The -H option specifies Viton/FKM seals for 0-150 C high-temperature environments.
The double-rod design provides anti-rotation stability and allows the back rod to drive a second tool. Based on the 825 N @0.5 MPa force, the computed safe working load is roughly 495 N, yielding a vertical lift capacity of about 42 kg with a 2:1 margin. The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore. Note that a plain cylinder does not hold its load on air loss; the 21mm adjustable air cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD50X125SH Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X125SH |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X125SH |
| Bore size | Ø50 mm |
| Stroke | 125 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 SAUD50X125SH 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 SAUD50X125SH produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUD Series Double Rod Cylinder SUD50X125SH
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SUD50X125SH Is Used
Dual-Tool Transfer
Drive two independent pick-and-place tools simultaneously using both extending rods to maintain perfectly synchronized timing without adding a second cylinder.
Anti-Rotation Gripper
Prevent rotational drift during vertical clamping tasks where a single rod might twist under off-center loads, ensuring precise jaw alignment.
Symmetric Pusher
Push a workpiece from one conveyor lane to another while using the opposite rear rod to trip a mechanical limit valve or sensor cam.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X125SH with the SAUD50X125SH
To replace the discontinued SUD50X125SH, select the drop-in SAUD50X125SH, which matches the 50mm bore, 125mm stroke, 1/4" port, and equal-both-ways force. When sizing both ways, verify your load against the 825 N @0.5 MPa figure, or step up to the 63mm bore if higher force is needed. A double rod is right when you need anti-rotation stability or want to drive two tools from one cylinder. Mounting is limited to Basic, FA, and LB styles (SC series compatible only). For the -S magnet option, change legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors on the SAUD. For this 125mm stroke, side-load is minimal, but for strokes >=300mm ensure guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X125SH
- ✓ 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 SUD50X125SH FAQ
Yes, the SUD50X125SH is discontinued. The exact drop-in replacement is the SAUD50X125SH, which offers the same 50mm bore, 125mm stroke, 1/4" port, and FA/LB mounting. You must upgrade the piston magnet sensors from legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG series.
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". The 21mm adjustable air cushions only decelerate the load near stroke end; they do not hold the load if air is lost, so an external rod lock is required for load holding.
Related AirTAC SAU Cylinders
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