This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X80-100, 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 SUJ40X80-100
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X80-100 is a double-acting profile-type standard cylinder with a Ø40mm bore and 80mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X80-100, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X80-100
- 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 SUJ40X80-100
The AirTAC SUJ40X80-100 is a double-acting double-rod profile cylinder with an adjustable extend stroke, allowing you to trim the 80 mm nominal stroke by up to 100 mm on-site via an external stop screw. The stop screw sets the end position and is not a load lock; use an external rod lock for held loads.
This SUJ model is discontinued and the direct replacement is the SAUJ40X80-100, retaining the same bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches used here. Since this specific SKU lacks a magnet, it cannot take a magnetic switch.
Airtac SUJ Adjustable Cylinder SUJ40X80-100 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X80-100 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X80-100 |
| Bore size | Ø40 mm |
| Stroke | 80 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 SAUJ40X80-100 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 SAUJ40X80-100 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 SUJ40X80-100
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 SUJ40X80-100 Is Used
Variable Depth Stops
Trimming the extend stroke on-site for probing or clamping stations where the exact material thickness varies between production runs.
Adjustable Forming Press
Setting a precise end position for light pressing tasks, allowing operators to dial in the stroke without reprogramming the motion controller.
Tunable Diverter Arm
Fine-tuning the extend length of a sorting gate to accommodate different package sizes on the fly without changing the cylinder mount.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X80-100 with the SAUJ40X80-100
To replace the discontinued SUJ40X80-100, use the direct replacement SAUJ40X80-100, which matches the 40 mm bore, 80 mm nominal stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 100 mm adjust window when you need to trim the extend stroke down to 0 mm on-site; the external stop sets end position but is not a lock, so add an external rod lock for held loads. For strokes of 300 mm or longer, verify side-load limits. Because this SKU has no magnet, sensing requires the SAUJ upgrade with CMSG/DMSG/EMSG sensors.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X80-100
- ✓ 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 SUJ40X80-100 FAQ
Yes, the SUJ40X80-100 is discontinued. The direct replacement is the SAUJ40X80-100, which shares the same 40 mm bore, 80 mm stroke, 100 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 switches.
The 100 mm adjust window lets you trim the 80 mm nominal extend stroke down to 0 mm on-site. The stop screw sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X80-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X80-100 replacement — usually within 7-8 hours.