This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD40X700S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD40X700S 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 SUD40X700S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD40X700S is a double-acting profile-type standard cylinder with a Ø40mm bore and 700mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD40X700S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke700 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUD40X700S
About the Airtac SUD Series Double Rod Cylinder SUD40X700S
The AirTAC SUD40X700S is a double-acting, double-rod profile cylinder featuring a 40mm bore, 700mm stroke, and a 1/4 inch port. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal at 528N @0.5 MPa, 739N @0.7 MPa, and 950N @0.9 MPa. This model is discontinued; the exact drop-in replacement is the SAUD40X700S, which retains the same body, bore, stroke, force, and FA/LB mounting. The SAUD upgrades to current CMSG/DMSG/EMSG sensors, whereas this legacy SUD used CS1-B/DS1-B switches.
With a 528N @0.5 MPa rating, the computed safe working load is roughly 317N, and the vertical lift capacity is about 27kg with a 2:1 margin. The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore. The back rod can drive a second tool or carry a sensor cam, while the equal-both-ways force provides anti-rotation stability. Note that the 21mm adjustable air cushions only decelerate near stroke end; they do not hold loads on air loss, requiring an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD40X700S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD40X700S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD40X700S |
| Bore size | Ø40 mm |
| Stroke | 700 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 SAUD40X700S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAUD40X700S 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 SUD40X700S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×700 | 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 SUD40X700S Is Used
Dual-Tool Machining Station
Drives two opposing tools simultaneously using the equal both ways force, maintaining strict anti-rotation stability for synchronized part clamping.
Transfer Pusher Assembly
Uses the back rod to carry a sensor cam while the front rod pushes products, keeping the 1/4 inch port profile body compact along the line.
Vertical Lift Mechanism
Lifts loads up to 27kg with a 2:1 safety margin at 0.5 MPa, relying on an external rod lock to hold the load since air cushions only decelerate.
Replacing the Airtac SUD Series Double Rod Cylinder SUD40X700S with the SAUD40X700S
To replace the discontinued SUD40X700S, select the SAUD40X700S drop-in, which matches the 40mm bore, 700mm stroke, 1/4 inch port, and FA/LB mounting. When sizing both ways, verify the equal push/pull force fits your load, or step to neighboring bores (32mm or 50mm) if margin allows. Choose a double-rod configuration when you need equal both ways force, anti-rotation stability, or a back rod to drive a second tool. For the -S magnet option, change legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors on the SAUD. At 700mm stroke, external guides are recommended to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same bore / stroke → SAUD40X700S
- ✓ 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 SUD40X700S FAQ
Yes, the SUD40X700S is discontinued. The exact drop-in replacement is the SAUD40X700S, which matches the 40mm bore, 700mm stroke, 1/4 inch port, and FA/LB mounting. You must upgrade the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
The double-rod design provides equal force both ways: 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa. The speed range is 30-800 mm/s. The 1/4 inch port and 21mm adjustable cushions manage deceleration, but an external rod lock is required for load holding.
Related AirTAC SAU Cylinders
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