Airtac MARF Stainless Steel Mini Air Cylinder MARF20X275S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF20X275S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø20mm bore and 275mm 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
- Stroke275 mm
- Port size1/8"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X275S
Built around a front flange that is part of the head itself, the MARF20X275S is a 20 mm bore, 275 mm stroke round-body mini cylinder. It is double acting with a variable air cushion at both ends, so end-of-stroke shock can be tuned out with the needle screws on first run. At 0.5 MPa (22-145 psi) the bore pushes 157 N and pulls 131.9 N.
The barrel is stainless steel rolled onto aluminium-alloy covers with a hard-chrome plated rod, a riveted round-body build that shrugs off washdown and damp shop air better than painted mini cylinders. At this force class the practical figure is about 94 N of real work at 0.5 MPa, which covers light clamping and part-pushing duty with margin.
Airtac MARF Stainless Steel Mini Air Cylinder MARF20X275S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF20X275S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 275 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 MARF20X275S
| 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. |
| ×275 | 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 MARF20X275S Is Used
Bottle rejector on a filling line
157 N at 0.5 MPa is enough to kick underfilled 500 ml bottles off a narrow conveyor within the 30-800 mm/s speed range.
Snap-cap press for cosmetic jars
The front flange bolts directly to the press plate, and about 94 N of working force seats snap lids without crushing them.
PCB stopper gate on a transfer rail
The built-in magnet drives a CMSG switch to confirm gate position, and the dual air cushion quiets each stop.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X275S the Right Cylinder?
Twenty millimetres is the smallest MAR bore; if 157 N at 0.5 MPa feels thin, step to the 25 mm bore (245 N) or 32 mm bore (402 N) at the same pressure. The magnet is fitted as standard, so CMSG / DMSG / EMSG switches mount straight onto the barrel. Note that a plain cylinder drifts when air is lost - add a rod lock if the position must hold. At 275 mm of travel keep side loads off the 8 mm rod and guide the payload externally; I and Y rod knuckles thread onto the M8x1.25 male thread.
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 MARF20X275S FAQ
At 0.5 MPa the 20 mm bore pushes 157.0 N and pulls 131.9 N. Raise supply to 0.7 MPa and push rises to 219.8 N with pull at 184.7 N. Theoretical maximum force at 1.0 MPa is 32.0 kgf. Operating window is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, with a 1/8" port and M8x1.25 male rod thread.
No. The F in MARF20X275S means the front-flange mount is carried on the front cover itself, so the cylinder bolts straight to the machine without ordering a separate flange or foot. The stainless round barrel and hard-chrome rod also make it a fit for washdown-prone corners.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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