This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X200-20S, 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 SUJ50X200-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X200-20S is a double-acting profile-type standard cylinder with a Ø50mm bore and 200mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X200-20S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke200 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X200-20S
- 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 SUJ50X200-20S
The AirTAC SUJ50X200-20S is a double-acting, double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 180-200 mm stroke. The nominal 200 mm stroke is the maximum. The stop screw strictly sets the end position; it is not a load lock.
This SUJ50X200-20S unit is discontinued and the direct replacement is the SAUJ50X200-20S, retaining the same force, bore, and FA/LB mounting. The -S suffix denotes a piston magnet for legacy CS1-B/DS1-B switches; the SAUJ successor upgrades to CMSG/DMSG/EMSG sensors.
Airtac SUJ Adjustable Cylinder SUJ50X200-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X200-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X200-20S |
| Bore size | Ø50 mm |
| Stroke | 200 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 SAUJ50X200-20S 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 SAUJ50X200-20S 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 SUJ50X200-20S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×200 | 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 SUJ50X200-20S Is Used
End-Of-Arm Tooling Calibration
Dialing in the exact extend position of a gripper during product changeovers, using the 20 mm stop screw to fine-tune the reach without reprogramming the motion controller.
Variable Depth Sealing Heads
Accommodating different carton depths on a packaging line by adjusting the extend stroke on-site to ensure the sealing jaw applies precise contact pressure.
Adjustable Diverter Fingers
Tuning the stroke of a sorting diverter to handle varying package widths on the fly, ensuring items are pushed accurately onto the correct lane.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X200-20S with the SAUJ50X200-20S
To replace the discontinued SUJ50X200-20S, order the direct replacement SAUJ50X200-20S, which matches the 50 mm bore, 200 mm nominal stroke, 1/4" port, and FA/LB mounting. Choose the 20 mm adjust window if your assembly requires field-tuning the extend stroke down to 180 mm; this integrated stop is simpler than fitting a fixed SAU cylinder with an external mechanical stop. Because this unit has the -S magnet, you must upgrade your sensing to CMSG/DMSG/EMSG switches (the SUJ used CS1-B/DS1-B). For stroke lengths of 300 mm or more, verify your side-load limits to prevent guide wear. A plain cylinder drifts on air loss; use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X200-20S
- ✓ 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 SUJ50X200-20S FAQ
Yes, the SUJ50X200-20S is discontinued. The direct replacement is the SAUJ50X200-20S, which shares the same 50 mm bore, 200 mm maximum stroke, 20 mm adjust window, 1/4" port, and FA/LB mounting. You must upgrade your switches from the legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG sensors.
The external stop screw provides a 20 mm adjustment window, allowing you to shorten the 200 mm extend stroke down to 180 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X200-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X200-20S replacement — usually within 7-8 hours.