Airtac MARF Stainless Steel Mini Air Cylinder MARF20X170S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF20X170S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø20mm bore and 170mm 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
- Stroke170 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 MARF20X170S
Longest standard 20 mm stroke in the MAR family, the MARF20X170S covers 170 mm of push as a double-acting cylinder with adjustable cushioning and its own front flange. Size it from these figures: 157.0 N extend and 131.9 N retract at 0.5 MPa.
In service the rolled stainless body and hard-chrome 8 mm rod shrug off mild corrosion in damp plants, while the variable cushion trims shock at every stroke end. Half the 16 kgf push equivalent leaves roughly 8 kg of vertical lifting with margin, a quick check when matching tote or bin weights. Supply 0.15-1.0 MPa (22-145 psi) and run anywhere in the 30-800 mm/s window; loss of air lets the load drift, so a rod lock is the answer for fail-safe stops.
Airtac MARF Stainless Steel Mini Air Cylinder MARF20X170S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF20X170S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 170 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 MARF20X170S
| 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. |
| ×170 | 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 MARF20X170S Is Used
Tote stopper
Rises into the path of small totes on a roller lane and stops them at a pick face, with the cushion absorbing the impact.
Label press roller
Presses a smoothing roller across labels on small shampoo bottles as they pass, using light, controlled force over 170 mm.
Slide lock pin
Plunges a locking pin into an assembly fixture slide to hold it during a riveting cycle, then retracts clear.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF20X170S the Right Cylinder?
At 0.5 MPa this bore pushes 157.0 N and pulls 131.9 N; if the load needs more, a 25 mm MAR delivers 245.3 N at the same pressure. The long 170 mm stroke suits pushers and stoppers, but keep the payload guided since an unsupported side load will bow the 8 mm rod. Air-loss drift matters on stopping duty: fit a rod lock if the stopped parts must never roll back. The front flange bolts straight to the machine plate, ports are 1/8 inch, and CMSG, DMSG or EMSG switches read position off the standard magnet.
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 MARF20X170S FAQ
At 0.5 MPa: 157.0 N extend, 131.9 N retract. At 0.7 MPa: 219.8 N extend, 184.7 N retract. Top theoretical output at 1.0 MPa is 32 kgf. Feed it air filtered to 40 um at 0.15-1.0 MPa (22-145 psi); the port is 1/8 inch and the rod thread M8x1.25.
No. The F in MARF20X170S means the flange is built into the front cover, so one set of bolts fixes the cylinder to the machine. Separate foot or flange brackets are not part of the MAR design, though I and Y knuckles still fit the rod.
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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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