Airtac MARU Stainless Steel Mini Cylinder MARU40X75S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU40X75S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø40mm bore and 75mm 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
- Stroke75 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 MARU40X75S
Mount it straight to the frame - the MARU40X75S carries its own top-facing bracket rolled into the body, so no separate flange or foot hardware enters the build. Inside, a 40 mm stainless round barrel drives a hard-chrome plated 16 mm rod, double-acting, with variable air cushion at each end and a standard magnet for sensing. At 0.5 MPa the 75 mm stroke pushes 628 N and pulls 528 N.
Budget about 377 N of working force at 0.5 MPa - the level that keeps cycles quick and seal life long - and read vertical duty as roughly 64 kg lifted, or 32 kg with a 2:1 margin. This riveted, corrosion-resistant construction earns its keep on rinse-down food machinery, where painted mini cylinders bubble and jam within months.
Airtac MARU Stainless Steel Mini Cylinder MARU40X75S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU40X75S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 MARU40X75S
| 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. |
| ×75 | 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 MARU40X75S Is Used
Bench press for bearings
Pressing small bearings into pump housings fits the 377 N working band at 0.5 MPa; the 75 mm stroke covers part load-in and press in a single cycle.
Dairy crate diverter
At a washdown conveyor, the riveted stainless body diverts 20 kg crates between lanes season after season while painted actuators nearby corrode.
CNC jig riser
Stepping a drill jig up by 75 mm per detent draws on the 64 kg vertical equivalent, and the top bracket carries the jig plate without extra plates.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU40X75S the Right Cylinder?
Size downward to the 32 mm MAR when working loads stay under about 240 N at 0.5 MPa, or upward to the 50 mm MAR (981 N push) once you pass roughly 590 N; the 40 mm bore in between carries 628 N. The magnet comes built in, so CMSG, DMSG or EMSG switches read end positions without special-order hardware. Keep in mind the MAR holds nothing on air loss - the twin cushions merely slow the final millimeters - and choose a rod lock or mechanical stop for fail-safe duty. Feed it through the 1/8" port at 0.15-1.0 MPa (22-145 psi).
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 MARU40X75S FAQ
Push at 0.5 MPa is 628.3 N, pull at 0.5 MPa is 527.8 N, push at 0.7 MPa is 879.6 N and pull at 0.7 MPa is 738.9 N; the theoretical maximum at 1.0 MPa is 128.1 kgf. These come from the 40 mm bore with a 16 mm rod, 1/8" ports and an M12x1.25 male thread.
Open both needle screws fully, run the cylinder at low speed, then close each needle until the end-of-stroke bounce just disappears; re-check after any speed change within the 30-800 mm/s band. The cushion softens stops only - it does not hold the rod, so use a rod lock if the load must stay put on air loss.
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