This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD50X245S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD50X245S 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 SUD50X245S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD50X245S is a double-acting profile-type standard cylinder with a Ø50mm bore and 245mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD50X245S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke245 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUD50X245S
About the Airtac SUD Series Double Rod Cylinder SUD50X245S
The AirTAC SUD50X245S is a double-acting, double-rod profile cylinder featuring a 50mm bore, 245mm stroke, and a 1/4 inch port. A rod exits both ends on a single piston, meaning both faces use the rod-side area and push/pull force is equal both ways at 825N @0.5 MPa, 1154N @0.7 MPa, and 1484N @0.9 MPa. This discontinued extruded aluminium profile barrel is shorter than an ISO 15552 cylinder of the same bore. The exact drop-in replacement is the SAUD50X245S, retaining the same bore, stroke, force, port, and FA/LB mounting.
Because the second rod drives a sensor cam and resists rotation, double-rod action is ideal for two-tool driving. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches; the SAUD replacement upgrades to current CMSG/DMSG/EMSG sensors. Based on the 825N @0.5 MPa rating, the safe working load is ~495N (60%), yielding a ~42kg vertical lift with a 2:1 margin. Note that air cushions only decelerate; use an external rod lock for load holding.
Airtac SUD Series Double Rod Cylinder SUD50X245S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD50X245S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD50X245S |
| Bore size | Ø50 mm |
| Stroke | 245 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 SAUD50X245S 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 SAUD50X245S 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 SUD50X245S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×245 | 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 SUD50X245S Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously with equal both ways force, utilizing the second rod for stable, anti-rotation movement.
Transfer Pusher Assembly
Pushes parts across a belt using the 825N @0.5 MPa force, with the rear rod carrying a legacy CS1-B/DS1-B sensor cam for position feedback.
Compact Vertical Lifter
Lifts ~42kg loads vertically with a 2:1 safety margin, fitting into tight spaces due to the shorter extruded aluminium profile barrel.
Replacing the Airtac SUD Series Double Rod Cylinder SUD50X245S with the SAUD50X245S
To replace the discontinued SUD50X245S, order the drop-in SAUD50X245S, which matches the 50mm bore, 245mm stroke, equal-both-ways force, 1/4 inch port, and FA/LB mounting. Size both ways by checking neighbour bores (40mm or 63mm) against your force requirements. A double rod is right when you need anti-rotation, a back rod to carry a sensor cam, or dual-tool driving. If using the -S magnet, note the sensor change from CS1-B/DS1-B to CMSG/DMSG/EMSG. For this 245mm stroke (under 300mm), side-load alignment is standard, but always guide the rod end to prevent binding.
Replacement checklist
- ✓ Same bore / stroke → SAUD50X245S
- ✓ 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 SUD50X245S FAQ
Yes, the SUD50X245S is discontinued. The exact drop-in replacement is the SAUD50X245S. It matches the 50mm bore, 245mm stroke, equal both ways force, 1/4 inch port, and FA/LB mounting, but upgrades the -S magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG.
The SUD50X245S features a 1/4 inch port and delivers equal force both ways: 825N @0.5 MPa, 1154N @0.7 MPa, and 1484N @0.9 MPa. It does not output a larger single-rod push value, and air cushions only decelerate near stroke end without holding the load.
Related AirTAC SAU Cylinders
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