
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU32X400S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø32mm bore and 400mm 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.
Long travel meets mid-range force: 402 N push and 346 N pull at 0.5 MPa from a 32 mm bore, with 563 N on tap at 0.7 MPa. This double-acting MAR is a round-body unit whose up/top bracket is part of the cylinder itself, and both stroke ends carry a variable air cushion for shock-free reversal over the 400 mm travel.
Roll-packed construction - aluminium covers and a stainless block riveted onto the stainless barrel - plus a hard-chrome rod stands up to outdoor and washdown air. The magnet ships inside as standard for CMSG, DMSG and EMSG switches. Theoretical vertical lift at 0.5 MPa works out near 41 kg; sizing parts to roughly 20 kg keeps a 2:1 margin.
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU32X400S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 400 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.
| 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.
| 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. |
| ×400 | 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.
Opens a full-width guard door on a vertical machining center using the 400 mm stroke; cushioned ends keep the door from banging the frame at speed.
Pushes stacked bakery trays onto a rack conveyor; 402 N at 0.5 MPa moves loaded trays while the stainless barrel handles the humid bakehouse air.
Lowers a vacuum gripper onto cartons from a gantry frame, sized so parts around 20 kg stay within a 2:1 safety margin on the vertical lift.
Match bore to load with real numbers: 25 mm bore manages 245 N at 0.5 MPa, this model 402 N, and a 40 mm bore 628 N. Keep side thrust low across the 400 mm travel since rod bending grows with unsupported stroke; an I or Y knuckle on the M10x1.25 thread helps align long tooling. The MAR does not park a load on air loss - the variable cushion damps impact, nothing more - so specify a rod lock for fail-safe stops. G or NPT port threads can be ordered in place of the standard PT.
Quick checklist
Output is constant over travel: 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 82.0 kgf theoretical at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s, media air filtered to 40 um.
Adjust the variable cushion needle screws on both covers during first run-up; more needle closure gives a longer, softer deceleration. A 400 mm stroke run at 800 mm/s carries real momentum, so dial the cushion before going to full speed. Cushioning softens impact only - it does not hold the piston if air is lost.
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