Airtac MARU Stainless Steel Mini Cylinder MARU40X70S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU40X70S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 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 MARU40X70S
Mid-size muscle in a compact package: the MARU40X70S pairs a 40 mm bore with a 70 mm stroke and 628.3 N of push at 0.5 MPa (527.8 N pull). Raise the line to 0.7 MPa and the numbers reach 879.6 N, with 128.1 kgf theoretical at 1.0 MPa (145 psi). Air cushions at both ends are adjustable, and the top-facing front bracket is part of the rolled construction - no bolt-on flange needed.
That 628.3 N is about 64 kgf of raw lift, or roughly 32 kg vertically once you keep a 2:1 margin. Under the stainless barrel sits a hard-chrome plated 16 mm rod that shrugs off splash and mild washdown, and the standard-fit magnet makes EMSG switch mounting a five-minute job on the line.
Airtac MARU Stainless Steel Mini Cylinder MARU40X70S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU40X70S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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 MARU40X70S
| 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. |
| ×70 | 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 MARU40X70S Is Used
Weld Fixture Clamp
70 mm of travel swings clearance for loading, then 628.3 N at 0.5 MPa clamps steel tube into a weld jig.
Case Squaring Station
Squares filled cartons before taping; the adjustable cushions stop the 879.6 N peak pressure from crushing the board.
Reject Diverter on a Filling Line
Kicks off-spec bottles sideways out of the lane, with a DMSG switch confirming full extension each cycle.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU40X70S the Right Cylinder?
Below this class, a 32 mm bore offers 402.2 N push at 0.5 MPa; above it, a 50 mm bore delivers 981.3 N and moves up to a 1/4-inch port. For press-like duties, note that the MAR starts to drift the moment air pressure falls - it is a motion cylinder, not a holder - so add a rod lock where sustained clamping matters. Magnet-equipped as standard, it pairs cleanly with CMSG or DMSG switches for stroke-end confirmation.
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 MARU40X70S FAQ
At 0.5 MPa: 628.3 N push, 527.8 N pull. At 0.7 MPa: 879.6 N push, 738.9 N pull. Theoretical maximum is 128.1 kgf at 1.0 MPa (145 psi). Supply pressure spans 0.15-1.0 MPa (22-145 psi), speed is 30-800 mm/s, and this bore uses a 1/8-inch port with an M12x1.25 rod thread.
The high-precision stainless tube and the hard-chrome plated carbon-steel rod shrug off moisture, washdown splash and outdoor dust, while the rolling-packed aluminium covers keep the round body sealed without tie-rods or separate fasteners. Both heads carry variable cushions, so end-of-stroke shock is dialled out at the needles instead of absorbed by the machine frame.
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