Airtac MARF Stainless Steel Mini Air Cylinder MARF20X150S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF20X150S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø20mm bore and 150mm 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
- Stroke150 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 MARF20X150S
AirTAC built the MARF20X150S as the front-flange version of its MAR round-body mini cylinder: 20 mm bore, 150 mm stroke, double acting with a variable air cushion at both ends. At 0.5 MPa it pushes with 157.0 N and pulls with 131.9 N, so plan real work at roughly 94 N to keep a healthy margin.
The 150 mm stainless barrel with its hard-chrome 8 mm rod shrugs off washdown and damp shop air, and the rolling-packed aluminium covers keep the seal tight over long service. Because the piston drifts when air is lost, use a rod lock if the position must hold. The front flange bolts straight to the machine with no separate bracket to buy, and the built-in magnet accepts CMSG, DMSG or EMSG switches as standard.
Airtac MARF Stainless Steel Mini Air Cylinder MARF20X150S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF20X150S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 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 MARF20X150S
| 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. |
| ×150 | 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 MARF20X150S Is Used
Bottle reject kicker
Fires underfilled bottles off a beverage line at the reject gate; 157 N at 0.5 MPa is ample for a 200 ml glass bottle over 150 mm.
Sample rack shuttle
Slides a 24-vial sample rack from the load position into a compact analyzer, guided by the front-flange mount.
Flap tucker
Tucks side flaps on small cosmetic cartons at a semi-auto cartoning station where a light, cushioned push is all that is needed.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X150S the Right Cylinder?
Bore 20 is the smallest in the MAR range, so if 157 N at 0.5 MPa is marginal, step up to bore 25 for 245.3 N at the same pressure. The 150 mm stroke sits well inside the 500 mm standard limit, but keep side loads off the 8 mm rod and guide the load externally if it overhangs. Run the cushion needles in on first commissioning; speed spans 30-800 mm/s at 0.15-1.0 MPa (22-145 psi). I and Y rod knuckles thread onto the M8x1.25 rod, and the ports are 1/8 inch.
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 MARF20X150S FAQ
At 0.5 MPa it pushes with 157.0 N and pulls with 131.9 N. At 0.7 MPa the numbers climb to 219.8 N push and 184.7 N pull, and the theoretical ceiling is 32 kgf at 1.0 MPa. Ports are 1/8 inch and the rod thread is M8x1.25.
No. Every MARF20X150S ships with the magnet built in, so CMSG, DMSG and EMSG switches clip onto the 20 mm barrel and report end-of-stroke or mid-stroke positions without a special-order piston.
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