Airtac MARF Stainless Steel Mini Air Cylinder MARF20X210S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF20X210S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø20mm bore and 210mm 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
- Stroke210 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 MARF20X210S
With 210 mm of stroke on a slim 20 mm bore, this front-flange MAR covers long-reach jobs where body space is tight. It runs double acting, the cushions at both ends are adjusted by needle screws, and speed spans 30-800 mm/s. Rated push at 0.5 MPa is 157.0 N, rising to 219.8 N at 0.7 MPa.
Because the stainless tube resists corrosion and the 8 mm chrome rod runs in a grease-storing piston seal, it suits wet frames and outdoor machinery. The 157.0 N push equals roughly 16 kg vertically, so for part weights up to about 8 kg you keep a comfortable 2:1 margin. A piston magnet is included as standard, so CMSG or EMSG switches read end positions straight away.
Airtac MARF Stainless Steel Mini Air Cylinder MARF20X210S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF20X210S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 210 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 MARF20X210S
| 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. |
| ×210 | 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 MARF20X210S Is Used
Cross-belt diverting pusher
Sweeps cartons sideways on a parcel sorter; 210 mm of travel clears one lane and the cushion softens the hit at each end.
Carousel indexing in a coating rig
Advances a rack 210 mm between spray stations in a small paint lab; the stainless barrel copes with solvent-laden air.
Vertical part lift on an assembly cell
Raises fixtures weighing up to about 8 kg between levels; keep guides vertical so the 8 mm rod sees pure push and pull.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X210S the Right Cylinder?
Between the short 20 mm strokes and the 25 mm bore that reaches 245.3 N push at 0.5 MPa, this 210 mm model fills long-reach duty. Side load is the main risk at this length: guide the load externally or fit a Y rod knuckle to protect the 8 mm rod. It will not hold position if supply air drops; a rod lock handles that.
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 MARF20X210S FAQ
Stroke does not change force: at 0.5 MPa you get 157.0 N pushing and 131.9 N pulling; at 0.7 MPa, 219.8 N and 184.7 N; theoretical maximum 32 kgf at 1.0 MPa. The standard stroke window runs to 500 mm, so 210 mm is a catalogue item.
Bolt the built-in front flange to a flat plate, connect the 1/8 ports, then turn the needle screws at each end until the cushion absorbs the load across 30-800 mm/s. On air failure the rod moves freely, so add a rod lock for held positions.
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 MARF20X210S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.