Airtac MARF Stainless Steel Mini Air Cylinder MARF20X100S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF20X100S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø20mm bore and 100mm 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.
- BoreØ20 mm
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X100S
A 100 mm sweep from the smallest MAR bore: the MARF20X100S pushes 157 N and pulls 131.9 N at 0.5 MPa, climbing to 219.8 N of push at 0.7 MPa with a theoretical peak of 32 kgf. The round body is a stainless-steel barrel with a hard-chrome plated rod, the aluminium covers riveted on for a sealed, corrosion-tolerant package that outlasts painted minis near washdown. Drive is double acting through a variable air cushion at each end, running 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
The front flange is part of the cover itself, so no separate foot or bracket is bought or aligned. For sizing, treat about 94 N as the realistic working force at 0.5 MPa instead of the full 157 N, and the cylinder will lift roughly 8 kg vertically with a 2:1 margin. The magnet comes fitted as standard, so CMSG, DMSG or EMSG switches mount straight on for stroke-end feedback.
Airtac MARF Stainless Steel Mini Air Cylinder MARF20X100S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF20X100S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 mm |
| Acting type | Double acting + cushion (front mount) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MARF20X100S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| F | Front-cover mount: F = front-flange mounting. |
| 20 | Bore size in mm. |
| ×100 | 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 MARF20X100S Is Used
Bottling reject pusher
Kicks underweight or label-missing bottles off a narrow lane at up to 800 mm/s, with the cushions absorbing the contact at each kick.
Fixture clamping on a drill bench
Holds aluminium brackets against a drill jig with about 94 N of dependable force at 0.5 MPa, cycle after cycle.
Slide gate on a granulate hopper
Opens and closes a plastic-pellet gate; the stainless barrel tolerates the dusty, slightly humid plant air.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X100S the Right Cylinder?
Bore 20 is the entry point of the MAR series; when 157 N at 0.5 MPa leaves too little headroom, the next step is the MARF25X100S at 245.3 N push. The 100 mm travel sits far inside the 500 mm standard limit, so nothing is made to order. Keep in mind that the piston coasts freely if air pressure is lost - the cushion trims the stroke end, it does not hold the load - so fit a rod lock where position must persist. The integrated front flange takes the mounting bolts directly, and I or Y knuckles thread onto the M8x1.25 rod.
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 MARF20X100S FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa push rises to 219.8 N. The theoretical maximum for this 20 mm bore is 32 kgf at 1.0 MPa. The 8 mm rod carries an M8x1.25 male thread and air ports are 1/8, with PT, G or NPT threads available.
No. Like any plain double-acting cylinder the MARF20X100S drifts when pressure drops; the variable cushions at both ends only soften impact at the stroke ends. Add a rod lock where the load must stay fixed, and use the built-in magnet with CMSG or DMSG switches to confirm position.
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