This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ40X80-75 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ40X80-75 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 SUJ40X80-75
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X80-75 is a double-acting profile-type standard cylinder with a Ø40mm bore and 80mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUJ40X80-75, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke80 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X80-75
About the Airtac SUJ Adjustable Cylinder SUJ40X80-75
The AirTAC SUJ40X80-75 is a double-acting single-rod profile cylinder with an adjustable stroke, now discontinued. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, giving a usable 5 to 80 mm stroke from the 80 mm nominal maximum. This 40 mm bore version features a 16 mm rod, M12x1.25 rod thread, and a 1/4" port. The stop screw sets the end position but is not a load lock; an external rod lock is required for held loads.
The exact drop-in replacement is the SAUJ40X80-75, matching the bore, stroke, force, port, and FA/LB mounting. Force output is 628 N push and 528 N pull at 0.5 MPa, reaching 1130 N at 0.9 MPa. A computed buyer insight shows a safe working load around 377 N (60% of the 0.5 MPa push force) and a 32 kg vertical lift capacity with a 2:1 margin. The SAUJ upgrade uses current CMSG/DMSG/EMSG sensors, whereas this legacy model used CS1-B/DS1-B switches.
Airtac SUJ Adjustable Cylinder SUJ40X80-75 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X80-75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X80-75 |
| Bore size | Ø40 mm |
| Stroke | 80 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 SAUJ40X80-75 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 SAUJ40X80-75 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 SUJ40X80-75
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 SUJ40X80-75 Is Used
Variable Stroke Clamping
Adjusts the extend stroke on-site to clamp parts of varying heights without swapping out the entire cylinder.
Adjustable Diverter Arms
Tunes the pusher extension length on a conveyor line to accommodate different package widths on the fly.
Flexible Sealing Heads
Trims the extend stroke by up to 75 mm to position sealing jaws accurately for varying container depths.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X80-75 with the SAUJ40X80-75
To replace the discontinued SUJ40X80-75, order the drop-in SAUJ40X80-75, which preserves the 80 mm maximum stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. When sizing both ways, the neighbouring 32 mm bore yields 402 N push at 0.5 MPa, while the 63 mm bore yields 1559 N push at 0.5 MPa. Choose the 75 mm adjust window when you need to tune the extend stroke down to 5 mm on-site, which often beats installing a fixed SAU cylinder with an external stop. Because this SKU lacks a magnet, it cannot take a sensor; the SAUJ uses CMSG/DMSG/EMSG sensors. For strokes of 300 mm or longer, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X80-75
- ✓ 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 SUJ40X80-75 FAQ
Yes, the SUJ40X80-75 is discontinued. The exact drop-in replacement is the SAUJ40X80-75, which matches the 40 mm bore, 80 mm stroke, 75 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 switches.
The 40 mm bore provides 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and 1130 N push at 0.9 MPa. The external stop screw allows you to trim the extend stroke by up to 75 mm on-site, yielding a usable 5 to 80 mm stroke from the 80 mm nominal maximum.
Related AirTAC SAU Cylinders
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