Airtac MARU Stainless Steel Mini Cylinder MARU40X25S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU40X25S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke25 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU40X25S
Short-stroke jobs get full-size force from the MARU40X25S: a 40 mm bore delivering 628 N at 0.5 MPa across just 25 mm of travel on 0.15-1.0 MPa (22-145 psi) air. Its U (up/top) bracket is part of the riveted round-barrel body, so mounting means bolts to a flat machine face with no separate flange or foot.
Keep the working load near 377 N at 0.5 MPa and the cylinder will run cool and last. The stainless barrel and hard-chrome plated carbon-steel rod resist corrosion in splash zones, while the variable cushion at both ends absorbs shock anywhere in the 30-800 mm/s speed range. A magnet is built in as standard, so CMSG / DMSG / EMSG switches clip on from day one.
Airtac MARU Stainless Steel Mini Cylinder MARU40X25S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU40X25S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting + cushion (up mount) |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MARU40X25S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 40 | 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 MARU40X25S Is Used
Drill-jig clamp
A machine shop clamps workpieces in a drill jig with the 25 mm stroke, using 377 N of practical force to hold parts without marking the surface.
Small press kick-off
On a benchtop assembly press, the short stroke ejects finished bushings from the die in one quick hit, with 628 N at 0.5 MPa behind it.
Pharma tray indexing
A laboratory packaging line indexes capsule trays in precise 25 mm steps, while the standard magnet feeds position signals to CMSG sensors.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU40X25S the Right Cylinder?
At 25 mm of stroke there is little travel to absorb misalignment, so mount the U bracket true and keep the load in line with the 16 mm rod. Force-wise, the 40 mm bore's 628 N at 0.5 MPa well exceeds the 32 mm bore's 402 N; if the job later needs 981 N, the 50 mm bore is the next step up. The piston magnet comes standard for CMSG / DMSG / EMSG switches, and the integrated mount needs no flange or foot. Remember the MAR is not a holder: on air loss the piston drifts, so choose a rod lock where position matters.
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 MARU40X25S FAQ
At 0.5 MPa expect 628.3 N push and 527.8 N pull; at 0.7 MPa push reaches 879.6 N; theoretical maximum is 128.1 kgf at 1.0 MPa. Air supply is 0.15-1.0 MPa (22-145 psi), ports are 1/8", the 16 mm rod has an M12x1.25 male thread, and this bore takes standard strokes up to 500 mm.
The U specifies an up (top) mounting bracket integrated into the front cover, so the cylinder bolts straight onto a machine plate with no separate flange or foot to purchase. I and Y rod knuckles still fit the M12x1.25 rod thread if you need a swivel joint.
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 MARU40X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.