This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X225-50, 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 SUJ40X225-50
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X225-50 is a double-acting profile-type standard cylinder with a Ø40mm bore and 225mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X225-50, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X225-50
- 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 SUJ40X225-50
The AirTAC SUJ40X225-50 is a double-acting double-rod profile cylinder with a 40mm bore and 225mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 50mm on-site, yielding a usable 175-225mm window. The stop screw strictly sets the end position; it is not a load lock, so fit an external rod lock for held loads.
The direct replacement is the SAUJ40X225-50, matching the bore, stroke, 1/4" port, and FA/LB mounting. Because this SKU lacks a magnet, it cannot take a switch. The SAUJ upgrade adopts current CMSG/DMSG/EMSG sensors, leaving the legacy CS1-B/DS1-B behind.
Airtac SUJ Adjustable Cylinder SUJ40X225-50 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X225-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X225-50 |
| Bore size | Ø40 mm |
| Stroke | 225 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 SAUJ40X225-50 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 SAUJ40X225-50 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 SUJ40X225-50
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 SUJ40X225-50 Is Used
Variable Pitch Pushing
Feeding different length blanks on a line by dialing the extend stroke 175-225mm without changing cylinders.
Adjustable Diverter Gate
Tuning a sorting arm's reach on-site to handle changing package widths precisely.
Custom Depth Stacking
Lowering a parts placer to varying stack heights, using the stop screw to set exact bottom positions.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X225-50 with the SAUJ40X225-50
To replace the discontinued SUJ40X225-50, order the SAUJ40X225-50 direct, retaining the 40mm bore, 225mm stroke, 50mm adjust window, and FA/LB mounting. Choose the 50mm adjust window if your fixture needs precise 175-225mm extend tuning; a fixed SAU plus external stop lacks this integrated profile. Since this no-magnet SKU cannot take a switch, the SAUJ upgrade requires CMSG/DMSG/EMSG sensors instead of legacy CS1-B/DS1-B. For this 225mm stroke, verify side-load limits on the rod guide. Note: the adjust stop sets end position but is not a lock; add an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X225-50
- ✓ 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 SUJ40X225-50 FAQ
Yes, the SUJ40X225-50 is discontinued. The direct replacement is the SAUJ40X225-50, matching the 40mm bore, 225mm stroke, 50mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw trims the extend stroke by up to 50mm on-site, giving a usable 175-225mm window. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X225-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X225-50 replacement — usually within 7-8 hours.