Airtac MAC Stainless Steel Mini Air Cylinder MAC50X440SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC50X440SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø50mm bore and 440mm stroke, 1/4" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ50 mm
- Stroke440 mm
- Port size1/4"
- Acting typeDouble acting + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC50X440SU
A 50 mm bore in the AirTAC MAC round-body family, the MAC50X440SU runs double acting with a variable air cushion at each end and a 440 mm stroke that sits inside the 500 mm standard range for this bore. At 0.5 MPa it pushes about 981 N through 1/4 inch ports, putting it firmly in the heavy mini-cylinder class for clamping, pressing and pushing work.
The stainless-steel barrel and hard-chrome plated rod shrug off washdown and damp shop air, a real edge over painted minis in food and outdoor cells. On first run, back the cushion needle screws off and open them gradually to kill end-of-stroke shock, so you can push heavier loads near 800 mm/s without hammering the aluminium covers. Since the extension rating is 981 N, budget roughly 589 N of actual work at 0.5 MPa - about a 50 kg vertical lift with a 2:1 margin. The magnet is built in as standard, so CMSG / DMSG / EMSG switches clip on with no special-order piston.
Airtac MAC Stainless Steel Mini Air Cylinder MAC50X440SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC50X440SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 440 mm |
| Acting type | Double acting + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAC Stainless Steel Mini Air Cylinder MAC50X440SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×440 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MAC Stainless Steel Mini Air Cylinder MAC50X440SU Is Used
Fixture clamp on a CNC machining centre
981 N at 0.5 MPa is ample to lock steel workpieces into a milling fixture, and the air cushion stops the clamp jaws slamming home.
Index stop on a rotary dial table
With 589 N of practical working force at 0.5 MPa, the cylinder drives a plunger stop that indexes pallet fixtures round the dial.
Lid press on a dairy fill line
The stainless barrel stands up to daily caustic washdown while the bore presses snap-on lids with up to 1374 N at 0.7 MPa.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC50X440SU the Right Cylinder?
Step down to MAC40X for lighter work - about 628 N at 0.5 MPa - or up to MAC63X, which reaches 1558 N, if the load outgrows this bore. The U flat-end back cover bolts straight to a fixed face; add FA flange, LB foot or SDB bracket parts when the frame needs them, and CMSG / DMSG / EMSG switches signal stroke ends straight from the standard magnet. At 440 mm the rod is long, so keep off-axis loads off it or fit external guides - a 16 mm rod bends under side force. Pressure runs 0.15-1.0 MPa (22-145 psi). One caution: with air off or the valve centred the piston drifts freely, so a suspended load calls for a rod lock or pilot check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAC Stainless Steel Mini Air Cylinder MAC50X440SU FAQ
At 0.5 MPa the bore pushes 981 N and pulls 881 N; at 0.7 MPa it reaches 1374 N on extension and 1233 N on retraction. The theoretical maximum is 200 kgf at 1.0 MPa. The rod is 16 mm with M14x1.5 male thread, ports are 1/4 inch, and 440 mm sits inside the 500 mm standard stroke for this bore.
Both ends carry a variable cushion controlled by needle screws. Open them fully before the first run, then close gradually until end-of-stroke knock fades. With speeds from 30 to 800 mm/s this lets heavier loads stop gently without hammering the aluminium covers.
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