Airtac MARU Stainless Steel Mini Cylinder MARU25X50S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X50S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 50mm 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.
- BoreØ25 mm
- Stroke50 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU25X50S
Compact 50 mm travel on a 25 mm bore makes the MARU25X50S a natural fit for clamping and ejecting in crowded fixtures. This round-body cylinder is rolling-packed from a stainless-steel tube, aluminium covers and a stainless block, so it shrugs off the damp and washdown that flake painted minis. Double acting with a variable cushion at each end, it carries its own up-mount front bracket, and the magnet ships inside as standard for CMSG / DMSG / EMSG sensing.
Expect 245.3 N of push and 206.1 N of pull at 0.5 MPa, rising to 343.4 N at 0.7 MPa - a 50 kgf class actuator. Keep real loads near 147 N and vertical lifts around 12.5 kg for a comfortable margin. Speeds from 30-800 mm/s suit short snap actions; tune the needle cushions so the 10 mm rod never hammers the covers. Air supply: 0.15-1.0 MPa (22-145 psi), filtered to 40 um.
Airtac MARU Stainless Steel Mini Cylinder MARU25X50S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X50S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 50 mm |
| Acting type | Double acting + cushion (up mount) |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MARU25X50S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 25 | Bore size in mm. |
| ×50 | 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 MARU25X50S Is Used
Ejector on a small stamping die
A 50 mm kick clears finished clips off the die face; 245.3 N at 0.5 MPa is ample for brass and thin steel parts weighing only a few grams.
Clamp for PCB test fixtures
Around 147 N of working force holds boards flat during pogo-pin testing, and the adjustable cushion keeps the clamp from slamming onto plastic fixture bodies.
Box push-off on a carton sealer
The up bracket bolts under the sealer frame, nudging sealed cartons sideways at up to 800 mm/s while the stainless barrel survives humid warehouse air.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X50S the Right Cylinder?
Stepping down, a 20 mm MAR makes 157 N push at 0.5 MPa; stepping up, the 32 mm reaches 402.2 N - pick by the gap between your load and this bore's 245.3 N. Remember the rod will drift if air pressure is lost; this cylinder is not a position lock, so spec a rod-lock unit where holding matters. The top bracket needs no extra flange order, CMSG switches read the built-in magnet straight out of the box, and the port is 1/8" on every bore up to 40 mm.
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 MARU25X50S FAQ
Push is 245.3 N and pull 206.1 N at 0.5 MPa; at 0.7 MPa push reaches 343.4 N and pull 288.5 N, with a 50 kgf theoretical maximum. It strokes 50 mm at 30-800 mm/s on 0.15-1.0 MPa (22-145 psi), handles -20 to +70 C, and accepts 1.5 MPa (215 psi) proof pressure. The rod is 10 mm with an M10x1.25 male thread and 1/8" ports.
Yes. Both ends carry a variable air cushion controlled by needle screws - turn them in on first run until the piston lands quietly. That matters at fast cycles up to 800 mm/s, where an un-cushioned 50 mm stop would shock the aluminium covers and shake the fixture. The magnet is factory fitted, so position switches need no special-order piston.
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