Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMLB
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMLB 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 MAC20X300SCMLB
Sliding loads 300 mm from a bore only 20 mm wide, the MAC20X300SCMLB is a double acting round-body mini cylinder with a variable air cushion at each end. At 0.5 MPa it delivers 157 N on extend, enough for gates, pushers and light clamps over this longer travel. The LB foot mounting plus the CM round-end back cover anchor the tube at two solid points.
The stainless barrel and hard-chrome plated 8 mm rod shrug off washdown and damp shop air, an edge over painted minis in food or outdoor cells. A magnet is built into the piston as standard, so CMSG / DMSG / EMSG switches clip straight on. Plan on roughly 94 N of real work at 0.5 MPa rather than the full 157 N rating.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMLB Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMLB |
|---|---|
| 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 MAC20X300SCMLB
| 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 MAC20X300SCMLB Is Used
Carton reject kicker
Kicks off-spec cartons sideways off a checkweigher belt - 157 N at 0.5 MPa clears a 300 mm lane change on the LB foot mount.
Machine guard slide
Opens and closes a sheet-metal guard over 300 mm; the cushioned ends stop the panel without banging the frame.
Dough-tray indexer
Foot-mounted pusher steps bakery trays one station at a time; the stainless barrel tolerates flour dust and wet cleaning.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X300SCMLB the Right Cylinder?
Compare forces at 0.5 MPa: the 16 mm bore gives 100.5 N, this 20 mm bore 157 N, and stepping up to 25 mm raises that to 245.3 N. If the load must hold position with air off, add a pilot check valve or rod lock - the MAC drifts when pressure is lost. The magnet is standard, so sensing needs no special piston.
At 300 mm of stroke keep the load aligned to the rod axis; side loads bend the 8 mm rod (M8x1.25 thread) and wear the seals early. Air enters through 1/8" ports (PT as standard, G or NPT by ordering code). FA flange or SDB pivot brackets are alternatives if the frame changes.
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 MAC20X300SCMLB FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa the figures rise to 219.8 N and 184.7 N. The theoretical maximum is about 32 kgf at 1.0 MPa. Supply 0.15-1.0 MPa (22-145 psi) and expect speeds of 30-800 mm/s.
LB feet bolt the stainless barrel to the machine frame while the CM round-end back cover takes the rod-side attachment. Both ends carry a variable air cushion - back the needle screws off before first run, then close them gradually until end-of-stroke shock disappears.
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Covers non-human-caused product damage.
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