Airtac MARU Stainless Steel Mini Cylinder MARU20X180S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X180S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 180mm 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
- Stroke180 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 MARU20X180S
Light duty done neatly: the 20 mm bore in this MAR makes 157 N of push and 132 N of pull at 0.5 MPa from a riveted stainless round barrel, with the 180 mm stroke keeping the footprint short. It is double acting with an adjustable cushion at both ends, so even fast light loads arrive without rattle, and the U code means the top mounting bracket is part of the front cover - bolt it up under a plate and you are done, no separate foot or flange.
Stainless tube plus a hard-chrome plated rod lets this little cylinder survive splash zones and outdoor stations where painted minis rust through. Practical push at 0.5 MPa sits near 94 N, which translates to about 8 kg of vertical lift with a 2:1 margin; the magnet is factory-fitted, so CMSG, DMSG or EMSG sensors mount whenever position feedback is needed.
Airtac MARU Stainless Steel Mini Cylinder MARU20X180S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X180S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 180 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 MARU20X180S
| 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. |
| ×180 | 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 MARU20X180S Is Used
Tablet reject finger
Flicks off-spec tablets from a pharma blister inspection belt, 157 N being ample for gram-scale parts at line speed.
Sleeve labeller nip roller
Loads the nip roller of a shrink-sleeve labeller, the 180 mm stroke matching the print head's lift clearance.
PCB carrier index
Advances SMT solder-pallet carriers between spray-wash stages, where the stainless tube shrugs off flux residue and rinse water.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X180S the Right Cylinder?
Below 20 mm there is no MAR bore, so if 157 N of push at 0.5 MPa feels thin, step up to the 25 mm (245 N) or 32 mm (402 N) version; a bigger bore usually beats a linkage. The 180 mm stroke is standard, and the 8 mm rod stays happy as long as the load rides guided.
Order it with the integral U bracket facing up, PT threads in the 1/8" ports (G or NPT to order), and tune both cushion needles after install. Remember that air loss leaves the piston free to drift - the cushion only trims the stroke ends - so specify a rod lock when a held position is critical. The standard magnet accepts CMSG, DMSG or EMSG switches without modification.
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 MARU20X180S FAQ
The 20 mm bore delivers 157.0 N push and 131.9 N pull at 0.5 MPa, 219.8 N and 184.7 N at 0.7 MPa, and tops out at 32.0 kgf theoretical at 1.0 MPa. Feed it 0.15-1.0 MPa (22-145 psi), cycle at 30-800 mm/s, and fit the 1/8" ports with standard fittings; the rod thread is M8x1.25.
A top-facing mounting bracket that is machined into the front cover itself, so the cylinder hangs from a machine plate without buying or aligning a separate foot or flange. The barrel itself is stainless with a hard-chrome plated rod, a pair of materials chosen to outlast painted mini cylinders in damp corners.
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