Airtac MARU Stainless Steel Mini Cylinder MARU20X230S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X230S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 230mm 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
- Stroke230 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU20X230S
The 230 mm reach of this up-mounted MAR turns a 20 mm bore into a compact long-stroke pusher for tight machines. It is double acting with a variable air cushion at both ends, and its 157 N push at 0.5 MPa (219.8 N at 0.7 MPa) covers light index, divert and lift jobs - plan on roughly 94 N of real working force once you keep a sensible margin.
Its edge over painted minis is the build: a rolled stainless barrel, aluminium covers and a hard-chrome carbon-steel rod that resists corrosion in damp or outdoor spots. The top mount is part of the front cover, so no loose foot or flange is bought separately. A magnet sits in the piston as standard, letting CMSG or DMSG switches mark end positions, and if air is lost the rod simply drifts - add a rod lock where the position must stay.
Airtac MARU Stainless Steel Mini Cylinder MARU20X230S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X230S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 230 mm |
| Acting type | Double acting + cushion (up mount) |
| 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 MARU Stainless Steel Mini Cylinder MARU20X230S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 20 | Bore size in mm. |
| ×230 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
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 MARU Stainless Steel Mini Cylinder MARU20X230S Is Used
Brewery hopper divert gate
The up bracket bolts under the hopper lip and the 230 mm stroke swings a small diverter plate between mash and sparge routes; the cushion keeps the plate quiet at speed.
Snack-carton kicker arm
On the secondary line the arm pushes borderline cartons into the reject chute; a DMSG switch on the standard magnet confirms arm retracted between cartons across the full 230 mm stroke.
Lab rinsing rig rack drive
The chrome rod and stainless barrel cope with frequent rinse splash in a glassware washer, raising racks of about 8 kg inside the 157 N push rating at 0.5 MPa.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X230S the Right Cylinder?
Compare before you buy: the next bore up, 25 mm, delivers 245 N at 0.5 MPa while bore 32 reaches 402 N - choose them when 157 N leaves no headroom. Ports are 1/8" on this 20 mm bore, and the rod thread is M8x1.25. Over 230 mm of stroke any side load will bend the 8 mm rod, so slide the load in its own guide. For holding during a pressure drop, pair the cylinder with a rod lock rather than relying on the cushion.
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 MARU Stainless Steel Mini Cylinder MARU20X230S FAQ
Push at 0.5 MPa is 157 N and pull 131.9 N; at 0.7 MPa push rises to 219.8 N and pull to 184.7 N, with a theoretical ceiling of 32 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) and proof pressure 1.5 MPa (215 psi).
Needle screws at both covers throttle the exhaust air in the last millimetres of travel, so you can soften the ends of the 230 mm stroke on first run-up and then run faster without end-of-stroke hammer. It damps the stop only - it does not hold the rod in place.
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