Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 300mm 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
- Stroke300 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 MAC20X300SCM
Round-end CM covers give the MAC20X300SCM a smooth, snag-free tail for tight frames, while the 20 mm stainless barrel drives a 300 mm stroke with 157 N of push and 131.9 N of pull at 0.5 MPa. Double acting throughout, with a variable air cushion at both ends that you tune via the needle screws to soften landings anywhere in the 30-800 mm/s band.
Built as a rolled, riveted body with a hard-chrome plated rod, it stands up to humidity and light washdown where painted minis rust. Work the numbers before sizing: about 94 N of dependable push at 0.5 MPa, enough to raise roughly 8 kg vertically with a 2:1 margin, or 16 kg at full pressure. The magnet comes standard, so CMSG, DMSG or EMSG switches mount without a custom piston. Proof pressure is 1.5 MPa (215 psi).
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 300 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 MAC20X300SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×300 | 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 MAC20X300SCM Is Used
Sliding shield on a CNC coolant enclosure
Slides a 300 mm polycarbonate guard across the spindle area; the CM round end tucks inside the machine shroud and the cushion quiets each close.
Carton stop on a gravity roller lane
Pops up to halt boxes at a pick face; 157 N push at 0.5 MPa holds the stream and the stainless barrel survives unheated dock humidity.
Trim gate on a small water tank
The corrosion-proof rod and barrel work outdoors, opening a 300 mm drain gate; the built-in magnet feeds a CMSG switch for open/closed status.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCM the Right Cylinder?
The 16 mm bore manages 100.5 N at 0.5 MPa and the 25 mm bore reaches 245.3 N, so bracket this model when the load sits between those figures. Its CM round end suits clevis-style or simple fixed linkages; FA flange and LB foot brackets bolt on if a base is needed. Air on both sides means nothing stops the rod when supply drops - plan a pilot check valve or rod lock for held loads. Confirm side-load limits from the datasheet before running at full speed.
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 MAC20X300SCM FAQ
It pushes 157 N and pulls 131.9 N at 0.5 MPa; at 0.7 MPa the figures are 219.8 N and 184.7 N; theoretical peak is 32 kgf at 1.0 MPa. Ports are 1/8" and the rod thread is M8x1.25 on this 20 mm bore with an 8 mm rod.
Back both needle screws fully off, stroke the cylinder slowly, then close each needle gradually until the end-of-stroke bump disappears. The cushion is variable air, not a brake - it cannot hold a load if air pressure is lost.
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