This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X25-10S, 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 SUJ40X25-10S
The AirTAC SUJ Adjustable Cylinder SUJ40X25-10S is a double-acting profile-type standard cylinder with a Ø40mm bore and 25mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X25-10S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X25-10S
- 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 SUJ40X25-10S
The AirTAC SUJ40X25-10S is a double-acting double-rod profile cylinder with a 25 mm nominal stroke and a 10 mm external stop screw window, letting you trim the extend stroke on-site down to 15 mm. The adjustable cushion is 21 mm at each end. This unit is discontinued; the direct replacement is the SAUJ40X25-10S, sharing the same bore, stroke, force, port, and FA/LB mounting.
The stop screw sets the end position but is not a load lock; use an external rod lock for held loads. The SAUJ upgrade keeps the compact profile but switches legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches. This shorter profile body beats fitting a fixed SAU plus an external stop when you need precise field stroke tuning.
Airtac SUJ Adjustable Cylinder SUJ40X25-10S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X25-10S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X25-10S |
| Bore size | Ø40 mm |
| Stroke | 25 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 SAUJ40X25-10S 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 SAUJ40X25-10S 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 SUJ40X25-10S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 SUJ40X25-10S Is Used
Short-Stroke Clamping
Adjustable end-position clamping of delicate castings, where trimming the extend stroke by up to 10 mm on-site prevents part deformation without changing the fixture height.
Variable Depth Sealing
Pinpoint sealing head descent in packaging equipment, allowing operators to dial in the exact 15-25 mm crush depth for varied container lip heights.
Compact Ejector Setup
Space-constrained ejection of small parts from a mold cavity, where the short profile barrel and field-tuned extend stroke replace bulky fixed-stroke alternatives.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X25-10S with the SAUJ40X25-10S
To replace the discontinued SUJ40X25-10S, order the direct replacement SAUJ40X25-10S, which matches the 40 mm bore, 25 mm nominal stroke, 10 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 10 mm adjust window if your extend stroke needs on-site tuning between 15 and 25 mm. Because this uses a -S magnet, swap the legacy CS1-B/DS1-B switches for CMSG/DMSG/EMSG sensors on the SAUJ. Side-load is not a concern for this 25 mm stroke, but for strokes >=300 mm verify guide shaft alignment to prevent binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X25-10S
- ✓ 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 SUJ40X25-10S FAQ
Yes, the SUJ40X25-10S is discontinued. The direct replacement is the SAUJ40X25-10S, offering the same 40 mm bore, 25 mm stroke, 10 mm adjust window, 1/4" port, and FA/LB mounting. You only need to upgrade the legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
The 10 mm external stop screw window allows you to shorten the 25 mm nominal extend stroke down to 15 mm on-site. This stop sets the end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X25-10S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X25-10S replacement — usually within 7-8 hours.