This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X200-50S, 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 SUJ40X200-50S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X200-50S is a double-acting profile-type standard cylinder with a Ø40mm bore and 200mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X200-50S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke200 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X200-50S
- 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 SUJ40X200-50S
The AirTAC SUJ40X200-50S is a discontinued double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 50 mm on-site, giving a usable 150-200 mm extend out of the 200 mm nominal maximum. The stop screw sets the end position but is not a load lock; a plain cylinder drifts on air loss, so fit an external rod lock or pilot-operated check valve to hold suspended loads.
The direct replacement is the SAUJ40X200-50S, which retains the same 40 mm bore, 200 mm stroke, 1/4" port, 128 kgf max force, and FA/LB mounting. Upgrading to the SAUJ moves you from the legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors. This compact profile body is shorter than an ISO 15552 cylinder of the same bore and avoids the bulk of a fixed-stroke SAU plus external stop.
Airtac SUJ Adjustable Cylinder SUJ40X200-50S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X200-50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X200-50S |
| Bore size | Ø40 mm |
| Stroke | 200 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 SAUJ40X200-50S 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 SAUJ40X200-50S 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 SUJ40X200-50S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | 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 SUJ40X200-50S Is Used
Variable Pitch Forming
A press fixture that needs to tune the extend stroke on-site by up to 50 mm to accommodate different material thicknesses without swapping the entire cylinder.
Custom Length Diverter
A sorting arm requiring a 150 to 200 mm extend range to handle changing lane widths, relying on the 1/4" port and compact profile body to fit tight machine envelopes.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X200-50S with the SAUJ40X200-50S
To replace the discontinued SUJ40X200-50S, order the direct replacement SAUJ40X200-50S, which matches the 40 mm bore, 200 mm nominal stroke, 1/4" port, M12x1.25 rod thread, and FA/LB mounting. Choose the 50 mm adjust window if you need on-site flexibility to trim the extend stroke from 200 mm down to 150 mm; the external stop sets end position but is not a lock. Because this unit has the -S magnet, swap the legacy CS1-B/DS1-B switches for CMSG/DMSG/EMSG sensors. For this 200 mm stroke, side-load is minimal, but for any stroke >=300 mm, ensure guide alignment to prevent rod binding. Remember that air cushions only decelerate near stroke end and do not hold loads without live air.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X200-50S
- ✓ 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 SUJ40X200-50S FAQ
Yes, the AirTAC SUJ40X200-50S is discontinued. The direct replacement is the SAUJ40X200-50S, which shares the same 40 mm bore, 200 mm stroke, 1/4" port, and FA/LB mounting. You only need to upgrade the switches from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors.
The external stop screw provides a 50 mm adjust window, allowing you to trim the 200 mm nominal extend stroke down to 150 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X200-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X200-50S replacement — usually within 7-8 hours.