This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X100-30SN, 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 SUJ40X100-30SN
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X100-30SN is a double-acting profile-type standard cylinder with a Ø40mm bore and 100mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X100-30SN, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke100 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X100-30SN
- 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 SUJ40X100-30SN
The AirTAC SUJ40X100-30SN is a discontinued double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 70-100 mm extend out of the 100 mm nominal maximum. The -N suffix denotes NBR seals for a -20 to +70 C operating range.
As this SUJ series is end-of-life, the direct replacement is the SAUJ40X100-30SN, which retains the same 40 mm bore, 100 mm stroke, 30 mm adjust window, force, and FA/LB mounting. Upgrading to the SAUJ is driven by sensor compatibility: this legacy unit uses CS1-B/DS1-B switches, whereas the SAUJ accepts current CMSG/DMSG/EMSG sensors. Note that the stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X100-30SN Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X100-30SN |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X100-30SN |
| Bore size | Ø40 mm |
| Stroke | 100 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 SAUJ40X100-30SN 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 SAUJ40X100-30SN 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 SUJ40X100-30SN
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SUJ40X100-30SN Is Used
Probe Contact Tuning
Trimming the extend stroke by up to 30 mm on-site allows precise depth setting for electrical test probes without machining custom spacers.
Variable Format Diverters
Adjusting the extend stop from 70 to 100 mm accommodates different package sizes on a packaging line without swapping out the entire cylinder.
Adjustable Mechanical Stops
Setting a hard external end position for varying pallet widths provides a repeatable physical datum that relies on the stop screw, not air pressure.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X100-30SN with the SAUJ40X100-30SN
To replace the discontinued SUJ40X100-30SN, specify the SAUJ40X100-30SN direct, ensuring you migrate from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors while keeping the 1/4" port and FA/LB mounts. Choose the 30 mm adjust window if your fixture requires field tuning between 70 and 100 mm; if you need a fixed 70 mm stroke without an external stop, a standard SAU cylinder is simpler. Because the nominal stroke is 100 mm, side-load concerns are minimal, but always verify rod alignment. Remember, a plain cylinder drifts on air loss—the stop screw sets end position, not a lock, so add a pilot-operated check valve or external rod lock for suspended loads.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X100-30SN
- ✓ 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 SUJ40X100-30SN FAQ
Yes, the SUJ40X100-30SN is discontinued. The direct replacement is the SAUJ40X100-30SN, which matches the 40 mm bore, 100 mm stroke, 30 mm adjust window, 1/4" port, and FA/LB mounting. You must upgrade the position sensing from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors.
The external stop screw provides a 30 mm adjust window, allowing you to shorten the extend stroke from the 100 mm nominal maximum down to 70 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X100-30SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X100-30SN replacement — usually within 7-8 hours.