This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X250-100, 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 SUJ40X250-100
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X250-100 is a double-acting profile-type standard cylinder with a Ø40mm bore and 250mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X250-100, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke250 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X250-100
- 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 SUJ40X250-100
The AirTAC SUJ40X250-100 is a double-acting double-rod profile cylinder with a 250 mm nominal stroke and a 100 mm external stop screw window, allowing you to trim the extend stroke down to 150 mm on-site. This SUJ model is discontinued; the direct replacement is the SAUJ40X250-100, matching the bore, stroke, force, port, and FA/LB mounting.
Because the stop screw sets the end position mechanically, it is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock or pilot-operated check valve for held loads. The SAUJ upgrade also switches to current CMSG/DMSG/EMSG sensors, whereas this legacy unit used CS1-B/DS1-B switches.
Airtac SUJ Adjustable Cylinder SUJ40X250-100 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X250-100 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X250-100 |
| Bore size | Ø40 mm |
| Stroke | 250 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 SAUJ40X250-100 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 SAUJ40X250-100 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 SUJ40X250-100
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 SUJ40X250-100 Is Used
Variable Pitch Indexing
Tuning the extend stroke by up to 100 mm on-site to test different material feed lengths without changing the entire cylinder.
Adjustable Diverter Gate
Setting a precise push distance on a sorting line to accommodate varying package widths during changeovers.
Variable Depth Pusher
Trimming the extend endpoint in a compact packing cell to push products to specific pallet depths on the fly.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X250-100 with the SAUJ40X250-100
To replace the discontinued SUJ40X250-100, order the SAUJ40X250-100 direct, keeping the 40 mm bore, 250 mm nominal stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. The 100 mm adjust window is ideal when the exact extend endpoint is unknown until machine commissioning, beating a fixed SAU plus external stop by saving space. Since this is a non-magnet SKU, it cannot take a switch; the SAUJ requires CMSG/DMSG/EMSG sensors. For this 250 mm stroke, verify side-load limits to prevent guide bushing wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X250-100
- ✓ 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 SUJ40X250-100 FAQ
Yes, the SUJ40X250-100 is discontinued. The direct replacement is the SAUJ40X250-100, which matches the 40 mm bore, 250 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.
The 100 mm external stop screw window allows trimming the 250 mm extend stroke down to 150 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X250-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X250-100 replacement — usually within 7-8 hours.