Airtac MARU Stainless Steel Mini Cylinder MARU20X20S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X20S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 20mm 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
- Stroke20 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 MARU20X20S
Short punch, small package: 20 mm of double-acting stroke squeezed into a 20 mm bore that still pushes 157 N at 0.5 MPa and 219.8 N at 0.7 MPa. The variable cushion at each end absorbs the snap of quick ejection cycles anywhere in the 30-800 mm/s band.
A riveted stainless tube with a hard-chrome 8 mm rod stands up to daily wipe-downs, while the integral up-facing bracket and standard magnet (ready for CMSG / DMSG / EMSG switches) remove two items from your accessory list. Budget for about 94 N of sustained work at 0.5 MPa - roughly an 8 kg vertical lift with margin - and this tiny stroke covers everything from gentle probing to fast ejection.
Airtac MARU Stainless Steel Mini Cylinder MARU20X20S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X20S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 MARU20X20S
| 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. |
| ×20 | 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 MARU20X20S Is Used
Chip sorting on CNC lathes
Kicking finished parts off the burnish station with a 20 mm jab; the short stroke keeps the sort cycle under a second.
Watch case press assist
Snapping press-fit case backs home in micro-assembly cells where 157 N is ample and the stainless body survives frequent handling.
Test fixture latching pins
Pinning PCB test rigs into position, with the standard magnet feeding an EMSG switch for pin-in-place confirmation.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X20S the Right Cylinder?
With only 20 mm of travel, size by force rather than reach: the 25 mm bore offers 245.3 N at 0.5 MPa if you need headroom, while this 20 mm bore keeps the envelope minimal at 157 N. There is no position holding on air loss - an air cushion is not a brake - so use a rod lock for fail-safe clamping. The I and Y knuckles thread onto the M8x1.25 rod end when tooling needs a swivel joint.
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 MARU20X20S FAQ
Push is 157 N and pull 131.9 N at 0.5 MPa; at 0.7 MPa expect 219.8 N push and 184.7 N pull, with a 32 kgf theoretical maximum at 1.0 MPa. Feed 0.15-1.0 MPa (22-145 psi) air through the 1/8" port.
The hard-chrome plated rod is 8 mm in diameter with an M8x1.25 male thread. Standard strokes on this bore run to 500 mm, so the 20 mm stroke here sits comfortably inside the range, and I or Y accessory knuckles fit the rod end directly.
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1-Year Warranty
Covers non-human-caused product damage.
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