
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF32X400S is a genuine double acting + cushion (front 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.
At 400 mm of stroke this front-flange MAR still rides on a compact 32 mm stainless barrel, double acting and cushioned at both ends, driving 402 N of push at 0.5 MPa. The mounting flange is integral to the front cover, so machine builders bolt it on without buying or machining a separate bracket.
Variable needle cushions let you run the full 400 mm fast - up to 800 mm/s - and still land the load gently on both covers. Hard chrome over the carbon-steel 12 mm rod and a grease-holding two-way piston seal keep friction low over the long travel, while the standard piston magnet accepts CMSG, DMSG or EMSG switches anywhere along the barrel. Halve the 41 kg vertical-lift equivalent and you can spec it to raise about 20 kg with a comfortable 2:1 margin.
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF32X400S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 400 mm |
| Acting type | Double acting + cushion (front 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). |
|---|---|
| F | Front-cover mount: F = front-flange 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.
Pulls a hopper outlet gate down 400 mm to release granulate into a weigher; 402 N at 0.5 MPa shears through bridging material.
Swings a diverter chute over a reject bin under a case conveyor; the front flange fixes straight to the chute pivot plate.
Traverses a winding guide across 400 mm on a spooling machine; the stainless barrel copes with the dust the line throws off.
Bore choice against the 0.5 MPa numbers: 245 N for a 25 mm MAR, 402 N for this 32 mm, 628 N for the 40 mm. A 400 mm stroke magnifies any misalignment, so hinge or guide the load and fit I or Y knuckles on the M10x1.25 rod end where swivel is needed. Remember the piston is free when air is removed - the cushion only softens the stroke ends - so a rod lock is required wherever a raised load must stay up. Buyers wanting adjustable stroke or a double rod should look at the MACJ and MACD companions instead.
Quick checklist
Push is 402 N and pull 346 N at 0.5 MPa; at 0.7 MPa expect 563 N push and 484 N pull; theoretical maximum 82 kgf at 1.0 MPa. Supply range is 0.15-1.0 MPa (22-145 psi), the 12 mm rod threads M10x1.25 and ports are 1/8 inch.
Yes - the speed window is 30-800 mm/s and the variable air cushion at each end is tuned with its needle screw, so you can approach at full speed and decelerate the load into the covers without metal-to-metal impact.
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