Airtac MARU Stainless Steel Mini Cylinder MARU40X135S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU40X135S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø40mm bore and 135mm 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
- Stroke135 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 MARU40X135S
Need ten extra millimetres over a 125 design? The MARU40X135S keeps the same 628 N push at 0.5 MPa (880 N at 0.7 MPa) while reaching 135 mm, so it swaps in without changing your air supply or valve sizing. It is a round-body stainless mini cylinder, double acting, with a variable cushion at each end to absorb the snap of a faster or heavier stroke.
The riveted stainless barrel with its hard-chrome plated 16 mm rod stands up to damp shops and rinse-down zones far better than painted minis. For real-world sizing, plan on about 377 N of usable force at 0.5 MPa - 60 percent of the rating - which translates to lifting roughly 32 kg vertically with a 2:1 margin.
Airtac MARU Stainless Steel Mini Cylinder MARU40X135S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU40X135S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 135 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 MARU40X135S
| 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. |
| ×135 | 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 MARU40X135S Is Used
Vial indexing on a pharma filler
A 135 mm throw advances one vial nest per cycle under a laminar hood; the stainless barrel tolerates IPA wipe-downs and the 628 N push handles the nest friction easily.
Gate on a recycling sorting chute
The up bracket bolts the cylinder above a sorting chute; 135 mm of travel swings a deflector while the two-sided cushion stops the gate from slamming at 800 mm/s.
Case ejector at a carton packer
Firing across the packer infeed, the cylinder pushes misaligned cases off the belt; 377 N of working force is ample for empty cartons, and the magnet feeds the PLC a done signal.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU40X135S the Right Cylinder?
Below about 240 N of load, the 32 mm bore (402 N push at 0.5 MPa) is cheaper; above 580 N, move to the 50 mm bore and its 981 N. Note that a plain MAR cylinder cannot park the rod when air pressure drops - it will drift - so fit a rod lock where holding matters. The integrated up bracket replaces a loose flange, and the standard magnet pairs with CMSG or EMSG switches without option cost.
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 MARU40X135S FAQ
Double-acting output at 0.5 MPa is 628.3 N pushing and 527.8 N pulling; at 0.7 MPa it reaches 879.6 N push and 738.9 N pull. The 1.0 MPa theoretical ceiling is 128.1 kgf. Supply pressure range is 0.15-1.0 MPa (22-145 psi), fluid is air filtered to 40 um.
Yes. Variable air cushioning sits at both stroke ends; turn the needle screws on commissioning until end-of-stroke knock disappears, then run anywhere in the 30-800 mm/s speed band.
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