This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X125-50, 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 SUJ100X125-50
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X125-50 is a double-acting profile-type standard cylinder with a Ø100mm bore and 125mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X125-50, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke125 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X125-50
- 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 SUJ100X125-50
The AirTAC SUJ100X125-50 is a discontinued double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 75-125 mm extend range from the 125 mm nominal maximum. The direct replacement is the SAUJ100X125-50, matching bore, stroke, force, port, and SC-series FA/LB mounting.
The stop screw sets end position but is not a load lock; use an external rod lock for held loads. Upgrading to the SAUJ moves sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors. This SKU has no magnet, so it cannot take a switch.
Airtac SUJ Adjustable Cylinder SUJ100X125-50 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X125-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X125-50 |
| Bore size | Ø100 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ100X125-50 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAUJ100X125-50 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 SUJ100X125-50
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×125 | 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 SUJ100X125-50 Is Used
Press Fit Tuning
Adjusting the extend stroke on-site by up to 50 mm allows operators to dial in the exact insertion depth for bearings without swapping cylinders.
Variable Length Diverter
Trimming the extend stroke from 125 mm down to 75 mm accommodates different package sizes on a sorting line without repositioning hardware.
Carton Sealing Stroke
Field-tuning the extend end position ensures the 100 mm bore cylinder applies precise 3927 N clamping force at varying flap heights.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X125-50 with the SAUJ100X125-50
To replace the discontinued SUJ100X125-50, specify the SAUJ100X125-50 direct: it preserves the 100 mm bore, 125 mm stroke, 50 mm adjust window, 1/2" port, and FA/LB mounting. Choose the 50 mm adjust window if your mechanism needs field tuning between 75 mm and 125 mm extend. Because this SKU lacks a magnet, it cannot accept a sensor; if sensing is needed, select an SAUJ with the -S suffix and use CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X125-50
- ✓ 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 SUJ100X125-50 FAQ
Yes, the SUJ100X125-50 is discontinued. The direct replacement is the SAUJ100X125-50, which matches the 100 mm bore, 125 mm stroke, 50 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also upgrades sensing to current CMSG/DMSG/EMSG sensors.
The external stop screw provides a 50 mm adjust window, allowing the 125 mm extend stroke to be shortened to 75 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X125-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X125-50 replacement — usually within 7-8 hours.