Airtac MARF Stainless Steel Mini Air Cylinder MARF40X300S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF40X300S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø40mm bore and 300mm 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.
- BoreØ40 mm
- Stroke300 mm
- Port size1/8"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM12×1.25
- 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 MARF40X300S
Long travel on a compact round body: this 300 mm stroke MAR runs double acting with variable air cushion at each end and a built-in front flange, so no accessory foot or flange is needed on the machine. Bore 40 delivers 628.3 N extend and 527.8 N retract at 0.5 MPa across the full travel, at speeds of 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air.
Chrome-plated 16 mm rod plus stainless barrel keeps corrosion out of damp plants, washdown corners and outdoor gantries where painted minis pit. Vertically this bore lifts about 32 kg with a 2:1 margin (64 kgf raw at 0.5 MPa), and the standard magnet means CMSG / DMSG / EMSG switches clip on without special ordering. Adjust the cushion needles on first run to tame end-of-stroke shock at higher speeds.
Airtac MARF Stainless Steel Mini Air Cylinder MARF40X300S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF40X300S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting + cushion (front mount) |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MARF40X300S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| F | Front-cover mount: F = front-flange mounting. |
| 40 | Bore size in mm. |
| ×300 | 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 MARF40X300S Is Used
Lift gate on a packaging hopper
300 mm of travel raises a slide gate clear of a hopper outlet; 628 N at 0.5 MPa handles a 30 kg gate with margin, and the cushion settles it home.
Pusher on a pallet transfer conveyor
The front flange mounts flush to conveyor rail; a full 300 mm stroke shunts parcels between lanes at up to 800 mm/s with damped arrival.
Tray ejector in a bakery washdown zone
Stainless barrel and chrome rod shrug off the humid washdown around a bakery tray line while ejecting racks the full 300 mm.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF40X300S the Right Cylinder?
Sizing check: a 25 mm MAR manages 245.3 N while a 50 mm bore delivers 981.3 N at 0.5 MPa, so at 628.3 N this 40 mm unit splits the difference for push-pull work over 300 mm. On a long stroke keep side loads off the rod - guide the load externally or the chrome rod will see bending over its 300 mm of exposure. The piston does not hold on air loss; fit a rod lock where position must persist. Order in PT (blank), G or NPT threads; the port is 1/8".
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 MARF40X300S FAQ
Extend force is 628.3 N and retract 527.8 N at 0.5 MPa; at 0.7 MPa expect 879.6 N and 738.9 N respectively, with a theoretical peak of 128.1 kgf at 1.0 MPa. Supply filtered air at 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), and stroke speeds from 30-800 mm/s between -20 and +70 C.
Every MAR ships with the piston magnet as standard, so CMSG, DMSG or EMSG reed switches mount anywhere along the barrel to flag extend, retract or mid-stroke on long travel - no special piston, no add-on kit. Pair them with the adjustable cushion needles to smooth the 300 mm stroke ends.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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