Airtac MARU Stainless Steel Mini Cylinder MARU25X250S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X250S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 250mm 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
- Stroke250 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 MARU25X250S
Need 245 N of push over a quarter metre of travel? The MARU25X250S stretches the 25 mm MAR bore to 250 mm while keeping 245.3 N at 0.5 MPa (343.4 N at 0.7 MPa) available across the whole stroke. It is double acting with an adjustable air cushion at each end, and the top mounting bracket comes as part of the riveted front cover, doing away with separate flanges or feet.
Built around a stainless round tube and a 10 mm hard-chrome carbon-steel rod, this mini cylinder takes damp workshops and periodic washdown in stride. The piston magnet is standard equipment, so CMSG, DMSG and EMSG switches snap on wherever an end-of-stroke signal is needed. Sizing tip: plan the workload at roughly 147 N (about 60 percent of rated push at 0.5 MPa), or count on around 12 kg of vertical lift with a 2:1 safety margin.
Airtac MARU Stainless Steel Mini Cylinder MARU25X250S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X250S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MARU25X250S
| 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. |
| ×250 | 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 MARU25X250S Is Used
Tamper pad on a small carton baler
The 245.3 N push (343.4 N if you bump supply to 0.7 MPa) seats loose cartons in the chamber, and the 250 mm stroke reaches deep into a tall hopper.
Clamp arm on a welding fixture
Clamping is planned at about 147 N - roughly 60 percent of the rated push - which suits thin-gauge bracket weldments, while the 206.1 N return retracts the arm to release.
Drop gate on a sorting chute
Gravity drops the gate but the cylinder must lift it back: about 12 kg of vertical lift at a 2:1 margin covers it, with an EMSG switch on the standard magnet confirming the closed position.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X250S the Right Cylinder?
Compare at 0.5 MPa: a 20 mm MAR pushes 157.0 N, this bore 245.3 N (206.1 N on retract), and a 32 mm MAR 402.2 N. If the application must hold a pose through an air drop, a standard MAR cannot - the rod moves with the load - so pair it with a rod lock. The built-in top bracket bolts straight to the frame, the standard magnet accepts CMSG / DMSG / EMSG switches, and a 250 mm stroke calls for external guiding to protect the 10 mm rod from bending loads.
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 MARU25X250S FAQ
Push is 245.3 N and pull 206.1 N at 0.5 MPa; at 0.7 MPa push rises to 343.4 N with pull at 288.5 N, and the theoretical peak is 50 kgf at 1.0 MPa. Run it on 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
It specifies the up (top) mounting bracket integrated into the front cover. The bracket is rolled into the cylinder body at the factory, so you bolt the machine straight to the cylinder - no separate front flange, foot or SDB accessory to order. I and Y rod knuckles still fit the M10x1.25 male rod thread if you need a floating joint.
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