Airtac MARU Stainless Steel Mini Cylinder MARU20X25S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X25S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 MARU20X25S
Short, slim and up-mounted, the MARU20X25S delivers 25 mm of double-acting travel from the smallest MAR bore. Push force is 157 N at 0.5 MPa, or about 94 N once you plan a 40% reserve - enough to lift roughly 8 kg vertically or seat light parts in a fixture.
Because it is a riveted stainless round-body cylinder with a hard-chrome plated rod, it keeps its sealing and finish where painted minis corrode, including splash zones and outdoor panels. The variable cushion at both ends lets you tune the 25 mm stroke to a gentle stop on fragile parts, and the built-in piston magnet means CMSG, DMSG or EMSG switches are a clip-on, not an option code.
Airtac MARU Stainless Steel Mini Cylinder MARU20X25S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X25S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MARU20X25S
| 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. |
| ×25 | 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 MARU20X25S Is Used
Vial indexing stop
Under the filler track the rod pops a stop pin between vials; the 25 mm stroke is quick, and the cushion protects the glass even at low 30 mm/s settings.
Solder-jig part seating
The up-facing bracket clamps the cylinder above the jig so the rod presses PCBs into their nests with about 94 N of practical force at 0.5 MPa.
Camera flag actuation
A DMSG switch on the standard magnet triggers the vision system once the 25 mm flag stroke completes - no separate magnet order is ever needed.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X25S the Right Cylinder?
This 20 mm bore tops out at 157 N push at 0.5 MPa; move to bore 25 (245 N) or bore 32 (402 N) when loads grow. The 1/8" ports and M8x1.25 rod thread suit compact manifolds and small I or Y knuckles on the 8 mm rod. Keep in mind the piston will creep if air pressure is lost - the cushion never acts as a brake, so for clamps that must stay seated fit a rod lock downstream.
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 MARU20X25S FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa, 219.8 N push and 184.7 N pull. The 20 mm bore tops out at a theoretical 32 kgf at 1.0 MPa. Working pressure is 0.15-1.0 MPa (22-145 psi).
The riveted stainless barrel and 20 um hard-chrome rod resist washdown and outdoor weathering, the up bracket is already integrated so no foot or flange is bought, and the standard piston magnet accepts CMSG, DMSG and EMSG switches.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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