This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X140-40S, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 SUJ Adjustable Cylinder SUJ50X140-40S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X140-40S is a double-acting profile-type standard cylinder with a Ø50mm bore and 140mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X140-40S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke140 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X140-40S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SUJ Adjustable Cylinder SUJ50X140-40S
The AirTAC SUJ50X140-40S is a discontinued double-acting double-rod adjustable-stroke profile cylinder. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 100-140 mm extension from the 140 mm nominal maximum. Featuring a 1/4" port, M16x1.5 rod thread, and 21 mm adjustable cushions, its extruded aluminum profile barrel is more compact than standard cylinders of the same bore.
Because this model is end-of-life, the direct replacement is the SAUJ50X140-40S, which preserves the bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, whereas this legacy unit used CS1-B/DS1-B switches. Remember the stop screw sets end position only; it is not a load lock, so add an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ50X140-40S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X140-40S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X140-40S |
| Bore size | Ø50 mm |
| Stroke | 140 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 SAUJ50X140-40S 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 SAUJ50X140-40S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ50X140-40S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×140 | 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 SUJ Adjustable Cylinder SUJ50X140-40S Is Used
Variable Pitch Forming
Bending or pressing stations that need to alter the extend reach by up to 40 mm between product runs without swapping the entire cylinder body.
Adjustable Transfer Stops
Diverting or stopping packages of varying sizes on a line, allowing operators to dial in the exact 100-140 mm stroke required on-site.
Custom Length Push-Offs
Ejecting goods from storage racks where the physical ejection distance must be fine-tuned to prevent overshooting the target container.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X140-40S with the SAUJ50X140-40S
To replace the SUJ50X140-40S, order the SAUJ50X140-40S for an direct swap. Choose the 40 mm adjust window when your mechanism requires field-tuning the extend stroke between 100 and 140 mm. Mounting remains compatible with AirTAC SC series FA and LB brackets. Because this unit has the -S magnet, you must upgrade position sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X140-40S
- ✓ 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 SUJ Adjustable Cylinder SUJ50X140-40S FAQ
Yes, the SUJ50X140-40S is discontinued. The direct replacement is the SAUJ50X140-40S, which matches the 50 mm bore, 140 mm stroke, 40 mm adjust window, 1/4" port, and FA/LB mounting. You only need to upgrade the sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw allows you to trim the extend stroke by up to 40 mm on-site, giving a usable extension range of 100-140 mm. The stop sets end position only and does not lock the load.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X140-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X140-40S replacement — usually within 7-8 hours.