Airtac MAC Stainless Steel Mini Air Cylinder MAC20X140SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X140SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 140mm 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
- Stroke140 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 MAC20X140SCA
Pivot mounting is built into this one: the MAC20X140SCA pairs a 20 mm bore and 140 mm stroke with a CA back cover that swings on a pivot eye without extra brackets. Double acting and cushioned at both ends, it delivers 157 N of push and 131.9 N of pull at 0.5 MPa across a 30-800 mm/s speed band on 0.15-1.0 MPa (22-145 psi).
The stainless barrel and hard-chrome plated rod resist corrosion in food plants and outdoor frames where painted bores blister. Design the tooling around roughly 94 N of working force at 0.5 MPa - six tenths of the 157 N rating - and you keep a healthy reserve for friction and wear. The piston magnet is standard, so position feedback via a CMSG, DMSG or EMSG switch needs no special order.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X140SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X140SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 140 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 MAC20X140SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×140 | 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 MAC20X140SCA Is Used
Inspection arm swing
Swings a camera arm across a PCB inspection station on a 140 mm arc, the CA pivot cover mounting straight to the rotating link.
Spray nozzle tilt
Tilts a paint spray nozzle bracket between two angles on a coating line, with a DMSG switch confirming each end position.
Conveyor stop lever
Pivots a stop lever that releases cartons one at a time from an assembly conveyor queue, the cushion easing each engagement.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X140SCA the Right Cylinder?
At 157 N push (0.5 MPa) this 20 mm bore sits above the 16 mm bore's 100.5 N and below the 25 mm bore's 245.3 N, so check the load before settling. When air is lost the rod moves freely - the variable cushion only softens end-of-stroke shock, it never holds a load - so specify a rod lock or pilot check valve for suspended or clamped work. The CA pivot back cover suits swinging links and levers; switch to FA flange, LB foot or SDB mounting if the frame prefers a fixed base, and the built-in magnet accepts CMSG, DMSG or EMSG switches out of the box. Over 140 mm of stroke, keep rod side load minimal and guide external slides separately.
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 MAC20X140SCA FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; push 219.8 N and pull 184.7 N at 0.7 MPa; 32.0 kgf theoretical maximum at 1.0 MPa. The rod is 8 mm with an M8x1.25 male thread, the ports are 1/8", and the 140 mm stroke is a standard length.
The CA cover carries a pivot eye, so the cylinder can swing with a lever, linkage or hinged gate without buying a separate bracket. If the machine needs a fixed base instead, order FA flange, LB foot or SDB mounting versions of the same cylinder.
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