This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X350-75, 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 SUJ40X350-75
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X350-75 is a double-acting profile-type standard cylinder with a Ø40mm bore and 350mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X350-75, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke350 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X350-75
- 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 SUJ40X350-75
The AirTAC SUJ40X350-75 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 275 to 350 mm extension window from the 350 mm nominal maximum.
The direct replacement is the SAUJ40X350-75, matching the bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, whereas this SUJ used legacy CS1-B/DS1-B switches. Note this non-magnet SKU cannot take a sensor. The stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X350-75 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X350-75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X350-75 |
| Bore size | Ø40 mm |
| Stroke | 350 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 SAUJ40X350-75 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 SAUJ40X350-75 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 SUJ40X350-75
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 SUJ40X350-75 Is Used
Variable Depth Boring
Dial in the exact extension endpoint on-site for boring operations where material thickness varies, using the 75 mm stop screw to prevent over-travel.
Adjustable Transfer Stops
Act as a lane diverter or package stop on a conveyor, trimming the 350 mm stroke to accommodate different box sizes without changing the cylinder.
Variable Height Indexing
Index parts to varying heights in a packaging line, using the external screw to set the precise 275 to 350 mm extended position for each run.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X350-75 with the SAUJ40X350-75
To replace the discontinued SUJ40X350-75, specify the SAUJ40X350-75 direct, which retains the 1/4" port, M12x1.25 rod thread, and 21 mm cushions. If migrating sensors, note the change from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. This non-magnet model cannot accept a switch. Choose the 75 mm adjust window when you need precise field tuning of the extend endpoint. Because the 350 mm stroke invites rod bending, ensure external guides handle side loads. Mounting is compatible with AirTAC SC series accessories via FA or LB brackets.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X350-75
- ✓ 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 SUJ40X350-75 FAQ
Yes, the SUJ40X350-75 is discontinued. The direct replacement is the SAUJ40X350-75, which matches the 40 mm bore, 350 mm stroke, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
This 40 mm bore double-acting double-rod cylinder pushes 628 N and pulls 528 N at 0.5 MPa, pushing 879 N at 0.7 MPa and 1130 N at 0.9 MPa, with a theoretical max of 128 kgf. The external stop screw trims the extend stroke by up to 75 mm on-site, giving a 275 to 350 mm usable window. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X350-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X350-75 replacement — usually within 7-8 hours.