Airtac MARU Stainless Steel Mini Cylinder MARU20X150S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X150S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 150mm 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
- Stroke150 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 MARU20X150S
Long reach in a small package: the MARU20X150S stretches a 20 mm stainless barrel to 150 mm of stroke while carrying its top-mount (U) bracket as part of the body. It is double acting with a variable cushion on both ends, pushes 157 N and pulls 131.9 N at 0.5 MPa, and runs 30-800 mm/s on 0.15-1.0 MPa (22-145 psi).
A riveted stainless tube with a hard-chrome 8 mm rod stands up to washdown better than painted minis, and the standard built-in magnet lets CMSG, DMSG and EMSG switches clip on with no special piston. For sizing, this bore lifts about 8 kg vertically at 0.5 MPa with a 2:1 margin (157 N / 9.81, halved), so match your part weight against that figure.
Airtac MARU Stainless Steel Mini Cylinder MARU20X150S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X150S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 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 MARU20X150S
| 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. |
| ×150 | 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 MARU20X150S Is Used
Sample tray indexing
Advances a loaded sample tray between two stations in lab automation, lifting about 8 kg vertically with a 2:1 margin.
Fixture part ejector
Knocks finished bushings out of a CNC drill fixture; the 150 mm reach clears the whole part from the nest.
Diverter gate actuator
Swings a light sorting gate on a parcel conveyor, the cushioned ends keeping the gate from banging at either stop.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X150S the Right Cylinder?
If 157 N at 0.5 MPa feels tight for the load, the next MAR bore up, 25 mm, pushes 245.3 N under the same pressure; bore 20 is the floor of the range, so there is nothing smaller to step down to. At 150 mm of stroke the 8 mm rod is the weak link against side loads - add an external guide for anything off-axis.
Position is not held if air is lost and the rod simply drifts, so pick a rod-lock variant where a fail-safe hold matters. The U bracket bolts directly to the frame and the standard magnet pairs with CMSG / DMSG / EMSG switches.
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 MARU20X150S FAQ
At 0.5 MPa: 157 N push and 131.9 N pull. At 0.7 MPa: 219.8 N push and 184.7 N pull. Theoretical peak at 1.0 MPa works out to 32 kgf.
Yes. The needle screws on both end covers adjust a variable air cushion. On first run open them, then dial in until the rod settles anywhere in the 30-800 mm/s band without knocking.
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