This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ100X275-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ100X275-50 in place of this model. 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 SUJ100X275-50
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X275-50 is a double-acting profile-type standard cylinder with a Ø100mm bore and 275mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUJ100X275-50, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke275 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X275-50
About the Airtac SUJ Adjustable Cylinder SUJ100X275-50
The AirTAC SUJ100X275-50 is a double-acting single-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 225-275 mm extend out of the 275 mm nominal maximum. This discontinued unit delivers 3927 N push and 3681 N pull at 0.5 MPa, peaking at 7068 N push at 0.9 MPa. It features a 100 mm bore, a 25 mm piston rod, M20x1.5 rod thread, and a 1/2" port.
Because this SUJ model is discontinued, the exact drop-in replacement is the SAUJ100X275-50, matching the bore, stroke, force, port, and FA/LB mounting. Two non-obvious upgrade facts: the SAUJ uses current CMSG/DMSG/EMSG sensors instead of this unit's legacy CS1-B/DS1-B switches, and its compact profile barrel is shorter than an ISO 15552 cylinder of the same bore. For sizing, the 3927 N push at 0.5 MPa means a safe working load of roughly 2356 N (60%), or a 200 kg vertical lift with a 2:1 margin. Note this SKU lacks a magnet and cannot take a switch; the stop sets end position but is not a load lock.
Airtac SUJ Adjustable Cylinder SUJ100X275-50 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X275-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X275-50 |
| Bore size | Ø100 mm |
| Stroke | 275 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 SAUJ100X275-50 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 SAUJ100X275-50 produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ100X275-50
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×275 | 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 SUJ100X275-50 Is Used
Variable Stroke Pressing
Ideal for pressing assemblies where the exact bottom position varies by part batch, using the 50 mm external stop screw to trim the extend stroke on-site without re-plumbing the 1/2" port.
Adjustable Diverter Arms
Perfect for conveyor diverters needing field-tuned reach; the 100 mm bore provides 3927 N push at 0.5 MPa to move heavy goods, while the stop sets the exact end position.
Custom Packaging Stops
Used in packaging lines to dial in the extend stroke for varying carton sizes, leveraging the 225-275 mm usable window and 7068 N push at 0.9 MPa for dense loads.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X275-50 with the SAUJ100X275-50
To replace the discontinued SUJ100X275-50, order the drop-in SAUJ100X275-50, which preserves the 100 mm bore, 275 mm stroke, 50 mm adjust window, 1/2" port, and SC-series FA/LB mounting. When sizing both ways, the neighboring 80 mm bore yields 2513 N push at 0.5 MPa, while this 100 mm bore provides 3927 N push at 0.5 MPa (7068 N at 0.9 MPa). Choose the 50 mm adjust window if your fixture needs field tuning between 225 mm and 275 mm; this stop screw sets the end position but is not a lock, so add an external rod lock for held loads. Because this specific SKU has no magnet, it cannot take a sensor; if sensing is required, select the -S version of the SAUJ and upgrade to CMSG/DMSG/EMSG switches. For this 275 mm stroke, verify side-load limits on the rod end.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X275-50
- ✓ 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 SUJ100X275-50 FAQ
Yes, the SUJ100X275-50 is discontinued. The exact drop-in replacement is the SAUJ100X275-50, which matches the 100 mm bore, 275 mm stroke, 50 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also supports current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The double-acting single-rod cylinder has a 50 mm adjust window (usable extend 225-275 mm). Forces are 3927 N push / 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and 7068 N push at 0.9 MPa. The external stop screw sets end position but is not a load lock; use an external rod lock for held loads.
Related AirTAC SAU Cylinders
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