Airtac MAC Stainless Steel Mini Air Cylinder MAC20X45SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X45SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 45mm stroke, 1/8" 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.
- BoreØ20 mm
- Stroke45 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X45SU
Compact fixtures favour the MAC20X45SU: a 45 mm stroke, 20 mm bore and U flat-end back cover that bolts flat against a plate with no adapter. Rated at 157 N push and 131.9 N pull at 0.5 MPa, it converts to roughly 94 N of dependable working force - enough to eject, clamp or sort small metal parts all day.
Unlike painted mini cylinders, the stainless barrel paired with the hard-chrome plated rod resists corrosion in coolant mist and washdown zones. The variable cushion at each end is adjusted by needle screw, and because the magnet is built in as standard, CMSG / DMSG / EMSG switches snap on for end-of-stroke detection.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X45SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X45SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 45 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 | 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MAC20X45SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×45 | 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 MAC20X45SU Is Used
Carton flap tucker
Folds the last flap on a small-box sealer; the U flat-end cover bolts flush to the frame plate and 157 N at 0.5 MPa closes glued flaps firmly.
Tray part ejector
Pushes brass bushings out of an aluminium tray nest; roughly 94 N of usable force at 0.5 MPa clears the nest without deforming the parts.
Damper nudge actuator
Closes a balancing damper inside a humid paint-shop duct; the stainless barrel and chrome rod shrug off the condensation that rusts painted minis.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X45SU the Right Cylinder?
Sizing check: bore 16 offers 100.5 N at 0.5 MPa and bore 25 offers 245.3 N, so pick 20 mm when your duty lands between about 94 N and 150 N. The U flat-end cover takes direct plate mounting, while FA flange, LB foot and SDB pivot brackets plus I / Y rod knuckles handle other frames. If your application must stay put on air loss - a vertical stop, for example - this double-acting barrel will drift, so specify 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 MAC20X45SU FAQ
Placeholder
The rolled stainless tube gives a slim, sealed body that tolerates coolant mist, humidity and outdoor exposure better than coated aluminium minis, while the 20 um hard-chrome rod keeps seal wear low - a practical edge in food handling and machine-tool splash zones.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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