Airtac MARF Stainless Steel Mini Air Cylinder MARF40X200S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF40X200S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø40mm bore and 200mm 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
- Stroke200 mm
- Port size1/8"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MARF Stainless Steel Mini Air Cylinder MARF40X200S
At 200 mm of stroke, the MARF40X200S covers longer transfer moves while keeping the compact footprint of a riveted round-body mini cylinder. Push force at 0.5 MPa is 628.3 N with 527.8 N on the return, and the variable cushion at each end absorbs the energy of faster cycles.
Because the flange is part of the front cover, there is no loose bracket to align - the cylinder bolts flush to the plate. The 628.3 N rating translates to about 377 N of dependable working force once margin is allowed, or a vertical lift of roughly 32 kg at a 2:1 ratio. A magnet built in as standard pairs with CMSG / DMSG / EMSG reed switches for end-of-stroke signalling.
Airtac MARF Stainless Steel Mini Air Cylinder MARF40X200S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF40X200S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting + cushion (front 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 MARF Stainless Steel Mini Air Cylinder MARF40X200S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| F | Front-cover mount: F = front-flange mounting. |
| 40 | Bore size in mm. |
| ×200 | 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 MARF Stainless Steel Mini Air Cylinder MARF40X200S Is Used
Carton flap folding stations
Folding bottom flaps on a case packer, where the 200 mm stroke reaches across mixed box widths and the flange mounts directly to the folding head.
Hopper slide gates
Opening and closing slide gates under powder or granulate hoppers; 628 N of push shears modest bridging loads without a separate mounting bracket.
Palletizer part push-off
Pushing layers or single packs off a palletizer table across a 200 mm sweep, with cushioned stops protecting layer alignment.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF40X200S the Right Cylinder?
If the load is lighter, the 32 mm MARF gives 402.2 N at 0.5 MPa; a 50 mm bore raises output to 981.3 N for heavier clamping. With 200 mm of unsupported rod, add external guides whenever the load is not rigidly carried - bending moments eat rod seal life. The piston drifts freely when supply pressure drops, so a separate rod lock cylinder is the answer where position must hold. Running range is 0.15-1.0 MPa (22-145 psi) and speeds from 30 to 800 mm/s; order G or NPT ports at purchase if PT does not suit your plant.
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 MARF Stainless Steel Mini Air Cylinder MARF40X200S FAQ
At 0.5 MPa: 628.3 N extend, 527.8 N retract. At 0.7 MPa: 879.6 N extend, 738.9 N retract. Theoretical peak at 1.0 MPa is 128.1 kgf. Air should be filtered to 40 um and regulated between 0.15-1.0 MPa (22-145 psi).
The barrel is stainless steel rolled tight over aluminium-alloy covers, with a hard-chrome plated 16 mm rod, so it copes with damp, splash and periodic washdown far better than painted-steel minis. Ports are 1/8 inch and the rod thread is M12x1.25.
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