Airtac MARU Stainless Steel Mini Cylinder MARU25X40S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X40S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 40mm 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
- Stroke40 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 MARU25X40S
Short travel, small package: the MARU25X40S squeezes a 25 mm double-acting bore with a 40 mm stroke into a riveted stainless round body that suits tight machine real estate. The 10 mm hard-chrome plated rod shrugs off corrosion in damp shops, and the front cover arrives with its own top-mount bracket already attached.
At 0.5 MPa the bore pushes 245 N and pulls 206 N, climbing to 343 N at 0.7 MPa. Treat about 147 N as the practical working force when sizing clamps and ejectors; on a vertical axis that equates to lifting roughly 12 kg with a 2:1 margin. Both ends carry a variable air cushion, a welcome feature at this stroke length that protects the covers even in fast 30-800 mm/s cycles.
Airtac MARU Stainless Steel Mini Cylinder MARU25X40S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X40S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 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 MARU25X40S
| 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. |
| ×40 | 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 MARU25X40S Is Used
Part ejection from a small progressive die
A 40 mm stroke is exactly the kick needed to clear finished parts off the die face, backed by 245 N of push at 0.5 MPa.
Clamp actuation on a welding fixture jig
The compact body fits between fixture plates while 206 N of pull holds sheet steel firmly against the locating pins.
Reject kick-off on a compact label applicator line
Mislabelled bottles are flicked off the conveyor in one short 40 mm move, cushioned at both ends so bottles never tip.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X40S the Right Cylinder?
A 40 mm stroke suits eject, clamp and index moves needing under 40 mm of travel. Check the neighbors first: the 20 mm bore tops out at 157 N of push at 0.5 MPa and the 32 mm bore reaches 402 N, so pick up or down if the load sits outside what 245 N comfortably handles. Because there is no internal lock, the piston follows the load whenever air pressure drops - fit a rod lock if the position must survive a supply failure. The standard-built magnet accepts CMSG, DMSG or EMSG switches along the stainless barrel, and the integrated top bracket removes any need for a separate mounting foot.
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 MARU25X40S FAQ
The 25 mm bore gives 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push at 0.7 MPa, and a theoretical maximum of 50.0 kgf at 1.0 MPa. Porting is 1/8 inch and the rod carries an M10x1.25 male thread.
Yes - the variable air cushion works at both ends regardless of stroke length. Turn the needle screws on first commissioning to match the load, and the 40 mm cycle stays shock-free even at speeds up to 800 mm/s.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MARU Stainless Steel Mini Cylinder MARU25X40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.