Airtac MARF Stainless Steel Mini Air Cylinder MARF20X140S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF20X140S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø20mm bore and 140mm 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
- Stroke140 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 MARF20X140S
Need just under 150 mm of reach from the smallest MAR bore? The MARF20X140S gives 140 mm of double-acting stroke on a 20 mm piston, cushioned at both ends and flanged at the front cover for direct bolting. Force output is 157.0 N extending and 131.9 N retracting at 0.5 MPa; at 0.7 MPa expect up to 219.8 N.
Derate to roughly 94 N for everyday work at 0.5 MPa and the cylinder will hoist about 8 kg vertically on a 2:1 factor. The rolled stainless barrel, aluminium covers and 20 um chrome-plated rod suit wet or dusty corners of a plant that would eat a painted body, and the integral magnet is wired-ready for CMSG, DMSG or EMSG switches.
Airtac MARF Stainless Steel Mini Air Cylinder MARF20X140S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF20X140S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 140 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 MARF20X140S
| 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. |
| ×140 | 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 MARF20X140S Is Used
Stop fence adjustment on a jig table
Nudges a stop fence along a woodworking jig between batch changes; the front flange mounts flush under the table edge with no bracket stack.
Bin gate on a light-duty pick module
Opens a bin-release gate on a picking shelf; 157 N of push is far above the torque this small gate needs, so response stays quick at low pressure.
Light pressing load on a teaching rig
Applies a gentle pressing load in a classroom test rig; the adjustable cushion gives students a controlled, damped approach to the sample.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X140S the Right Cylinder?
Compared with the 125-135 mm siblings this length adds reach without a bigger bore, but the slender 8 mm rod over 140 mm means external guiding is essential if the load can tilt. For heavier duty the 25 mm MAR starts at 245.3 N push at 0.5 MPa. Remember the piston free-drifts when air is lost, so a rod lock is needed for suspended loads.
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 MARF20X140S FAQ
Push 157.0 N and pull 131.9 N at 0.5 MPa, rising to 219.8 N push and 184.7 N pull at 0.7 MPa, with a 32.0 kgf theoretical peak at 1.0 MPa. Operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s on air filtered to 40 um.
The F in the code is a front-flange bracket built into the cover, so the cylinder face bolts to a machine plate with no extra flange kit. The magnet comes as standard, so CMSG, DMSG or EMSG switches snap onto the stainless tube for end-of-stroke signalling without any special-order piston.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MARF Stainless Steel Mini Air Cylinder MARF20X140S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.