This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X800-30S, 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 SUJ40X800-30S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X800-30S is a double-acting profile-type standard cylinder with a Ø40mm bore and 800mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X800-30S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke800 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X800-30S
- 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 SUJ40X800-30S
The AirTAC SUJ40X800-30S is a double-acting double-rod profile cylinder with an adjustable stroke, allowing you to trim the extend stroke by up to 30 mm on-site. This yields a usable extend range of 770-800 mm from the 800 mm nominal maximum. The external stop screw sets the end position precisely but is not a load lock. This discontinued model is fully replaced by the SAUJ40X800-30S.
The SAUJ direct keeps the same profile body, force, and FA/LB mounting, but upgrades sensing to current CMSG/DMSG/EMSG switches from the legacy CS1-B/DS1-B. Note that a plain cylinder drifts on air loss; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X800-30S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X800-30S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X800-30S |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAUJ40X800-30S 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 SAUJ40X800-30S 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 SUJ40X800-30S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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 SUJ40X800-30S Is Used
Variable Push Assembly
Dialing in the exact extend position on-site for a pressing task where material thickness varies slightly, using the 30 mm adjust window to set the final end stop.
Adjustable Transfer Diverter
Actuating a routing gate where the required reach shifts based on product width, allowing operators to trim the 800 mm stroke without repositioning the cylinder.
Variable Depth Carton Flap Folding
Folding carton flaps of varying depths by tuning the extend stroke on the fly, ensuring precise flap placement without re-engineering the fixture.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X800-30S with the SAUJ40X800-30S
To replace the SUJ40X800-30S, order the exact direct replacement SAUJ40X800-30S, which preserves the 40 mm bore, 800 mm stroke, 30 mm adjust window, and 1/4" port. The 30 mm adjust window is ideal for fine-tuning the extend end position without adding an external stop. Mounting remains compatible with AirTAC SC series FA and LB brackets. Because the -S suffix denotes a magnet, upgrade your sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. At 800 mm stroke, mind side-load and rod-bending forces by incorporating external guides to prevent premature wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X800-30S
- ✓ 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 SUJ40X800-30S FAQ
Yes, the SUJ40X800-30S is discontinued. The direct replacement is the SAUJ40X800-30S, which shares the same 40 mm bore, 800 mm stroke, 30 mm adjust window, and 1/4" port. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw provides a 30 mm adjust window, making the usable extend stroke 770-800 mm. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X800-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X800-30S replacement — usually within 7-8 hours.