This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X125-40, 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 SUJ100X125-40
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X125-40 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 SAUJ100X125-40, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke125 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X125-40
- 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 SUJ100X125-40
The AirTAC SUJ100X125-40 is a discontinued double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 40 mm on-site, yielding a usable extend range of 85-125 mm from the 125 mm nominal maximum. The direct replacement is the SAUJ100X125-40, which matches the bore, stroke, force, port, and FA/LB mounting exactly.
Because this SKU lacks a magnet, it cannot accept a sensing switch. The SAUJ successor upgrades sensing to current CMSG/DMSG/EMSG switches, whereas this legacy model used CS1-B/DS1-B. The stop screw sets the end position but is not a load lock; an external rod lock is required to hold loads on air loss.
Airtac SUJ Adjustable Cylinder SUJ100X125-40 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X125-40 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X125-40 |
| 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 SAUJ100X125-40 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 SAUJ100X125-40 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 SUJ100X125-40
| 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 SUJ100X125-40 Is Used
Variable Depth Pressing
Allows operators to dial in the exact extend position for pressing bearings or pins where material thickness varies, trimming up to 40 mm without changing the cylinder.
Adjustable Diverter Stroke
Tunes the extend length of a sorting gate on the fly to accommodate different package sizes, ensuring the stop screw sets the precise end position.
Custom Length Stopper
Provides a field-adjustable hard stop for pallets or workpieces, letting maintenance shorten the extend stroke by up to 40 mm to adapt to new conveyor layouts.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X125-40 with the SAUJ100X125-40
To replace the discontinued SUJ100X125-40, order the direct replacement SAUJ100X125-40, which preserves the 100 mm bore, 125 mm stroke, 40 mm adjust window, 1/2" port, and FA/LB mounting. Choose the 40 mm adjust window if you need to trim the extend stroke on-site between 85 and 125 mm. Since this specific SKU has no magnet, it cannot accept sensors; the SAUJ replacement requires 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 excessive guide wear. The stop screw sets end position and is not a lock; for load holding without live air, specify an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X125-40
- ✓ 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 SUJ100X125-40 FAQ
Yes, the SUJ100X125-40 is discontinued. The direct replacement is the SAUJ100X125-40, which matches the 100 mm bore, 125 mm stroke, 40 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw provides a 40 mm adjust window, allowing you to trim the extend stroke from the 125 mm maximum down to 85 mm. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X125-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X125-40 replacement — usually within 7-8 hours.