This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD50X70 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD50X70 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 SUD50X70
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X70 is a double-acting profile-type standard cylinder with a Ø50mm bore and 70mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD50X70, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke70 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X70
About the Airtac SUD Series Double Rod Cylinder SUD50X70
The AirTAC SUD50X70 is a double-acting, double-rod profile cylinder featuring a 50mm bore and 70mm stroke. Because a rod exits both ends on one piston, push and pull force are equal at 825N @0.5 MPa, 1154N @0.7 MPa, and 1484N @0.9 MPa. This discontinued model uses an extruded aluminum barrel and a 1/4 inch air port. The exact drop-in replacement is the SAUD50X70, which matches the bore, stroke, force, port, and FA/LB mounting.
This SKU lacks a magnet (-S) and cannot take a magnetic switch. For buyers, the equal both-ways force yields a safe working load of 495N (60% of the 825N @0.5 MPa figure) and a vertical lift capacity of 42 kg with a 2:1 margin. The SAUD upgrade switches to current CMSG/DMSG/EMSG sensors from the legacy CS1-B/DS1-B used here. A plain cylinder drifts on air loss; the 21mm adjustable cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD50X70 Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X70 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X70 |
| Bore size | Ø50 mm |
| Stroke | 70 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 SAUD50X70 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 SAUD50X70 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 SUD50X70
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×70 | 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 SUD50X70 Is Used
Dual-Tool Machining
Drives two opposing tools simultaneously from one piston, using the equal both-ways force to machine parts on both ends without stroke variance.
Anti-Rotation Transfer
Transfers workpieces along a conveyor using the twin rods to prevent mechanical rotation, ensuring parts stay perfectly aligned during the 70mm travel.
Symmetric Push-Pull Gates
Operates dual sorting gates where identical push and pull force is required to open and close diverters reliably at high cycle speeds.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X70 with the SAUD50X70
To replace the discontinued SUD50X70, use the SAUD50X70 drop-in. Size both ways by checking neighbor bores (40mm or 63mm) while confirming equal force fits your tooling. Choose a double rod when you need anti-rotation stability or to drive two tools from one piston. Mounting is Basic, FA, or LB (SC series only). This non-magnetic SKU cannot take sensors, but the SAUD upgrade uses CMSG/DMSG/EMSG sensors instead of legacy CS1-B/DS1-B. For stroke lengths >=300, verify side-load limits to prevent guide wear. Never rely on the air cushion to hold loads; add an external rod lock.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X70
- ✓ 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 SUD50X70 FAQ
Yes, the SUD50X70 is discontinued. The exact drop-in replacement is the SAUD50X70, which matches the 50mm bore, 70mm stroke, equal both-ways force, 1/4 inch port, and FA/LB mounting. The SAUD also adds the SAUF built-in-valve variant the SU line lacked.
The SUD50X70 provides equal both-ways force of 825N @0.5 MPa, 1154N @0.7 MPa, and 1484N @0.9 MPa. It uses a 1/4 inch air port, a 20mm rod, and adjustable air cushions of 21mm at each end. Speed ranges from 30-800 mm/s.
Request a Quote for the SAUD50X70
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD50X70 replacement — usually within 7-8 hours.