This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X35-10FA, 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.

The AirTAC SUJ Adjustable Cylinder SUJ40X35-10FA is a double-acting profile-type standard cylinder with a Ø40mm bore and 35mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X35-10FA, which matches its bore, stroke, force and mounting.
The AirTAC SUJ40X35-10FA is a discontinued double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 25-35 mm extend stroke from the 35 mm nominal maximum. It features a 40 mm bore, a 16 mm rod, M12x1.25 rod-end thread, adjustable 21 mm air cushions, and a 1/4" port. The stop sets the end position but is not a load lock; use an external rod lock for held loads.
This SKU lacks a magnet and cannot take a switch, whereas the SAUJ upgrade supports current CMSG/DMSG/EMSG sensors (the SUJ used legacy CS1-B/DS1-B).
| Model | Airtac SUJ Adjustable Cylinder SUJ40X35-10FA |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X35-10FA |
| Bore size | Ø40 mm |
| Stroke | 35 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 SAUJ40X35-10FA carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAUJ40X35-10FA produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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.
Ideal for clamping parts where the exact 25-35 mm extend endpoint must be fine-tuned on-site to accommodate varying material thicknesses without reprogramming the machine cycle.
Useful on conveyor lines where the 10 mm adjust screw acts as an external stop to set the precise protrusion of a diverter gate, allowing quick mechanical setup changes.
Fits into tight machinery spaces to eject small parts, letting operators dial in the 25-35 mm ejection stroke mechanically to ensure parts clear the tooling without overtravel.
To replace this discontinued SUJ40X35-10FA, specify the SAUJ40X35-10FA; it is a direct retaining the 40 mm bore, 35 mm stroke, 1/4" port, and FA front-mounting bracket. Choose the 10 mm adjust window if your mechanism needs precise 25-35 mm extend endpoint tuning on-site. Because this specific SKU has no magnet, it cannot support sensing; if you need position detection on the SAUJ replacement, add the -S suffix and use CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. For strokes under 300 mm, side-load risks are minimal, but always ensure rigid guidance. Remember that air cushions only decelerate the piston near stroke end and do not hold loads on air loss.
Replacement checklist
Yes, the AirTAC SUJ40X35-10FA is discontinued. The direct replacement is the SAUJ40X35-10FA, which shares the same 40 mm bore, 35 mm nominal stroke, 10 mm adjust window, 1/4" port, and FA mounting. The SAUJ also offers the SAUF built-in-valve variant the SU line lacked.
The external stop screw provides a 10 mm adjust window, allowing you to shorten the 35 mm nominal extend stroke down to 25 mm on-site.
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X35-10FA replacement — usually within 7-8 hours.