Airtac MARU Stainless Steel Mini Cylinder MARU32X120S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU32X120S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø32mm bore and 120mm 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.
- BoreØ32 mm
- Stroke120 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 MARU32X120S
At 120 mm of stroke the MARU32X120S reaches across chutes, guards and fixtures that shorter minis cannot. Bore 32 output is 402 N push and 345.6 N pull at 0.5 MPa, climbing to 563.0 N push at 0.7 MPa. AirTAC builds it as a round stainless barrel riveted to aluminium covers around a hard-chrome plated rod - a body that tolerates washdown and humid air where painted or plain aluminium minis corrode.
Motion is double acting with a variable air cushion at each end; set the needle screws at commissioning so fast strokes stop without hammering the covers. The top (U) mount is built into the front cover, replacing a separate flange or foot. Treat about 241 N at 0.5 MPa as the working budget for sizing, and with a 2:1 margin the cylinder lifts about 20 kg vertically. The piston magnet ships standard, ready for CMSG, DMSG or EMSG switches.
Airtac MARU Stainless Steel Mini Cylinder MARU32X120S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU32X120S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 120 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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 MARU32X120S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 32 | Bore size in mm. |
| ×120 | 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 MARU32X120S Is Used
Hopper slide gate
Opens and closes the slide gate under a small powder hopper on a filling line; the 120 mm stroke clears the gate port and 402 N at 0.5 MPa pushes granulated product past the seat.
Sliding machine guard
Moves the polycarbonate guard on a bench drilling station through its full 120 mm travel; the adjustable cushion lets it close fast without slamming into the frame.
Test-rig lift stage
Raises a 15 kg fixture on a PCB burn-in rig; with a 2:1 margin the bore 32 cylinder lifts about 20 kg vertically at 0.5 MPa, comfortably inside its 41 kg theoretical limit.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU32X120S the Right Cylinder?
Bore 25 tops out at 245.3 N push (0.5 MPa) and bore 40 reaches 628.3 N, so this 32 mm bore is the middle choice for jobs in the 300-400 N band. A 120 mm rod extension amplifies side loads - guide the load in slides or linear bearings rather than cantilevering it off the 12 mm rod. The MAR cannot hold a load when air pressure drops; the rod simply drifts, so add a rod lock for suspended loads. It mounts through its own integrated top bracket and accepts CMSG / DMSG / EMSG switches on the standard magnet.
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 MARU32X120S FAQ
The bore 32 piston gives 402.2 N push and 345.6 N pull at 0.5 MPa, 563.0 N push and 483.8 N pull at 0.7 MPa, and 82 kgf theoretical maximum at 1.0 MPa. Proof pressure is 1.5 MPa (215 psi) against a working range of 0.15-1.0 MPa (22-145 psi).
Long rod extensions amplify side load, so carry the load in slides or bearings instead of hanging it off the 12 mm rod, and use the cushion needle screws to soften the stop when running fast. Also remember the piston drifts if air is lost - fit a rod lock whenever the load must stay put.
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