Airtac MAC Stainless Steel Mini Air Cylinder MAC20X180SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X180SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 180mm 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
- Stroke180 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 MAC20X180SCM
Round-body stainless construction and a CM round-end back cover make the MAC20X180SCM a natural on clevis-pivoted fixtures: the 20 mm bore, double-acting piston gives 157 N at 0.5 MPa (131.9 N retracting), with a variable cushion at each end to soften the snap of a 180 mm cycle. Working on the derated side yields close to 94 N - enough to seat or lift parts of up to about 8 kg at a 2:1 vertical margin.
Inside the barrel the two-way piston seal doubles as a grease store, cutting dry breakaway after idle spells. The hard-chrome 8 mm rod and stainless tube stand up to brine, milk and rinse water, while the built-in magnet feeds position signals to CMSG, DMSG or EMSG switches.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X180SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X180SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 180 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 MAC20X180SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×180 | 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 MAC20X180SCM Is Used
Yogurt cup push-off
Pushes filled yogurt cups off a rotary filler table into an inline packer; 157 N moves a cup row while cushions keep the landing quiet.
Dairy CIP probe lifter
Lifts a conductivity probe clear of a CIP rinse tank between cycles on a dairy line, where the stainless tube stands up to caustic splash.
Lathe guard door
Closes a polycarbonate guard on a bench lathe; the CM round-end pivots on a door clevis so the rod tracks the swing.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X180SCM the Right Cylinder?
Between the 16 mm bore (100.5 N push at 0.5 MPa) and the 25 mm bore (245.3 N), the 20 mm MAC20X180SCM covers mid-range push and clamp jobs in a small envelope. Air runs 0.15-1.0 MPa (22-145 psi), proof tested at 1.5 MPa (215 psi). If a valve centres mid-stroke expect the rod to creep under load - fit a pilot check valve or rod lock where a held position matters.
The round-end CM cover takes a clevis pin for pivoting frames, while FA flange, LB foot and SDB brackets suit fixed mounts. For 180 mm of travel, carry the load on an external guide so the 8 mm rod works in pure thrust. Ports are 1/8"; the male rod thread is M8x1.25.
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 MAC20X180SCM FAQ
No. As a plain double-acting cylinder it drifts once supply drops or the valve centres, and the end cushions are dampers, not brakes or locks. Pair it with a pilot check valve or a rod lock where a load must stay parked; the magnet-driven CMSG, DMSG or EMSG switches signal position but cannot hold it.
At 0.5 MPa: 157 N extend, 131.9 N retract. At 0.7 MPa: 219.8 N extend, 184.7 N retract. Theoretical maximum at 1.0 MPa is 32 kgf. In service that is roughly 94 N of push, or about 8 kg of vertical lift at a 2:1 factor. Ports are 1/8" with an M8x1.25 male rod thread.
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