This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X500-75, 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 SUJ40X500-75
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X500-75 is a double-acting profile-type standard cylinder with a Ø40mm bore and 500mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X500-75, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke500 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X500-75
- 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 SUJ40X500-75
The AirTAC SUJ40X500-75 is a discontinued 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 425-500 mm window from its 500 mm nominal maximum. The direct replacement is the SAUJ40X500-75, matching the bore, stroke, force, port, and FA/LB mounting.
This SKU lacks a magnet and cannot take a switch. The stop screw sets end position but is not a load lock; use an external rod lock for held loads. The SAUJ upgrade switches legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches. At 500 mm stroke, external guides are recommended to prevent rod bending.
Airtac SUJ Adjustable Cylinder SUJ40X500-75 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X500-75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X500-75 |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAUJ40X500-75 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 SAUJ40X500-75 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 SUJ40X500-75
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 SUJ40X500-75 Is Used
Variable Depth Boring
Machine tools requiring field stroke tuning to adjust the extend reach by up to 75 mm for different material thicknesses without swapping the entire cylinder.
Adjustable Diverter Arms
Sorting lines that need the extend stroke shortened on-site to handle varying package sizes, using the external stop screw to set the exact end position.
Custom Positioning Stops
Warehousing mechanisms where the 425-500 mm usable stroke window accommodates shifting pallet dimensions, relying on the stop screw for precise end-of-travel limits.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X500-75 with the SAUJ40X500-75
To replace this discontinued SUJ40X500-75, order the direct replacement SAUJ40X500-75, keeping the 40 mm bore, 500 mm stroke, 75 mm adjust window, and 1/4" port. Choose the 75 mm adjust window if you need on-site extend trimming between 425-500 mm. Mounting uses basic, FA, and LB brackets compatible with the AirTAC SC series. Because this specific SKU has no magnet (-S omitted), it cannot accept sensors; the SAUJ family supports current CMSG/DMSG/EMSG switches. For the 500 mm stroke, add external guides to manage side-load and rod-bending risks.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X500-75
- ✓ 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 SUJ40X500-75 FAQ
Yes, the SUJ40X500-75 is discontinued. The direct replacement is the SAUJ40X500-75, which matches the 40 mm bore, 500 mm stroke, 75 mm 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 allows you to trim the extend stroke by up to 75 mm on-site, giving a usable stroke window of 425-500 mm. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X500-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X500-75 replacement — usually within 7-8 hours.