This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ50X125-10S, 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 SUJ50X125-10S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ50X125-10S is a double-acting profile-type standard cylinder with a Ø50mm bore and 125mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ50X125-10S, which matches its bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke125 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ50X125-10S
- 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 SUJ50X125-10S
The AirTAC SUJ50X125-10S is a double-acting double-rod profile cylinder with a 125 mm nominal stroke and a built-in piston magnet (-S). An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 115-125 mm extension window for exact positioning without machining. This SUJ series is discontinued; the direct replacement is the SAUJ50X125-10S, retaining the same bore, stroke, force, and SC-series FA/LB mounting.
The SAUJ upgrade transitions from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches. Note that the stop screw sets the end position but is not a load lock; drifting occurs on air loss, requiring an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ50X125-10S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ50X125-10S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ50X125-10S |
| Bore size | Ø50 mm |
| Stroke | 125 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 SAUJ50X125-10S 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 SAUJ50X125-10S 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 SUJ50X125-10S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 SUJ50X125-10S Is Used
Diverter Gate Trimming
Fine-tunes the extend stroke by up to 10 mm on-site to perfectly seat a pneumatic diverter gate against varying product sizes without re-engineering the fixture.
Carton Flap Folding
Adjusts the extend endpoint in the field to fold carton flaps of slightly different heights, ensuring crisp tuck-and-fold alignment on the packaging line.
Transfer Stop Positioning
Micro-adjusts the stop pin extension on a conveyor to accommodate mixed product lengths on the fly, preventing over-travel and ensuring precise indexing.
Replacing the Airtac SUJ Adjustable Cylinder SUJ50X125-10S with the SAUJ50X125-10S
To replace the discontinued SUJ50X125-10S, specify the SAUJ50X125-10S as a direct, keeping the 50 mm bore, 125 mm stroke, 1/4" port, and FA/LB mounts. The -S suffix means your legacy CS1-B/DS1-B sensors must be swapped to current CMSG/DMSG/EMSG switches. The 10 mm adjust window is ideal for micro-trimming the extend stroke; the stop screw sets end position but is not a lock. For stroke lengths >=300 mm, verify side-load constraints to prevent rod bending.
Replacement checklist
- ✓ Same bore / stroke → SAUJ50X125-10S
- ✓ 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 SUJ50X125-10S FAQ
Yes, the AirTAC SUJ50X125-10S is discontinued. The direct replacement is the SAUJ50X125-10S, which shares the same 50 mm bore, 125 mm nominal stroke, 10 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also introduces the SAUF built-in-valve variant the SU line lacked.
The external stop screw allows trimming the extend stroke by up to 10 mm on-site (usable 115-125 mm). The -S suffix indicates a built-in magnet for legacy CS1-B/DS1-B sensors; the SAUJ replacement uses current CMSG/DMSG/EMSG switches. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ50X125-10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ50X125-10S replacement — usually within 7-8 hours.