This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD50X135S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD50X135S 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 SUD50X135S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X135S is a double-acting profile-type standard cylinder with a Ø50mm bore and 135mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD50X135S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke135 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X135S
About the Airtac SUD Series Double Rod Cylinder SUD50X135S
The AirTAC SUD50X135S is a double-acting double-rod profile cylinder featuring a 50mm bore, 135mm stroke, and a 1/4 inch port. Because a rod exits both ends, the push and pull forces are equal both ways at 825N @0.5 MPa, 1154N @0.7 MPa, and 1484N @0.9 MPa. This discontinued model uses an extruded aluminum profile barrel and a built-in magnet for legacy CS1-B/DS1-B sensors.
This SUD50X135S is discontinued and the exact drop-in replacement is the SAUD50X135S, retaining the same bore, stroke, force, and FA/LB mounting. The back rod provides an anti-rotation benefit and can carry a sensor cam. For sizing, the safe working load is about 495N (60% of the 825N @0.5 MPa figure), yielding a vertical lift capacity of roughly 42kg with a 2:1 margin.
Airtac SUD Series Double Rod Cylinder SUD50X135S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X135S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X135S |
| Bore size | Ø50 mm |
| Stroke | 135 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 SAUD50X135S 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 SAUD50X135S 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 SUD50X135S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×135 | 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 SUD50X135S Is Used
Dual-Tool Machining
Drives two opposing tools simultaneously from one piston, utilizing the equal both ways force to maintain balanced cutting pressure.
Anti-Rotation Transfer
The twin rod design prevents mechanical twist during package transfer on conveyor lines, ensuring precise placement without rotation.
Symmetric Lifting Jig
Lifts pallets or jigs symmetrically using the back rod as a sensor cam, keeping the load stable and level throughout the stroke.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X135S with the SAUD50X135S
To replace the SUD50X135S, order the SAUD50X135S which is a drop-in match for bore, stroke, 1/4 inch port, and FA/LB mounting. When sizing both ways, verify the 825N @0.5 MPa equal force fits your load, or step to neighbour bores like 40mm or 63mm. Choose a double rod when you need anti-rotation or to drive two tools. The -S sensor changes from CS1-B/DS1-B to CMSG/DMSG/EMSG. For this 135mm stroke, ensure side-load alignment. A plain cylinder drifts on air loss; use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X135S
- ✓ 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 SUD50X135S FAQ
Yes, the SUD50X135S is discontinued. The exact drop-in replacement is the SAUD50X135S, which matches the 50mm bore, 135mm stroke, 1/4 inch port, and FA/LB mounting.
The SUD50X135S has a 1/4 inch port and provides equal force both ways: 825N @0.5 MPa, 1154N @0.7 MPa, and 1484N @0.9 MPa.
Related AirTAC SAU Cylinders
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