Airtac MARF Stainless Steel Mini Air Cylinder MARF50X40S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF50X40S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø50mm bore and 40mm stroke, 1/4" 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.
- BoreØ50 mm
- Stroke40 mm
- Port size1/4"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM14×1.5
- 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 MARF50X40S
Tight envelopes favour the MARF50X40S: a 50 mm bore and only 40 mm of stroke, still good for 981.3 N of push at 0.5 MPa and 1373.8 N at 0.7 MPa. The cylinder is double acting with a variable cushion at each end, and its front-flange mount is integral to the riveted front cover - the machine plate is the mating face, nothing else to buy. It runs on 0.15-0.15-1.0 MPa (22-145 psi) air filtered to 40 um, at 30-800 mm/s.
Corrosion resistance comes from the stainless-steel barrel and the 20 um hard-chrome plating on the 16 mm rod, a real advantage in humid or food-area plant rooms. When sizing a clamp or kicker, work from about 589 N of usable force at 0.5 MPa - roughly a 50 kg vertical lift at a 2:1 margin - rather than the full rating. The piston magnet is standard, ready for CMSG, DMSG or EMSG sensors.
Airtac MARF Stainless Steel Mini Air Cylinder MARF50X40S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF50X40S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 40 mm |
| Acting type | Double acting + cushion (front mount) |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 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 MARF50X40S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| F | Front-cover mount: F = front-flange mounting. |
| 50 | Bore size in mm. |
| ×40 | 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 MARF50X40S Is Used
Carton reject kicker
Diverts faulty cartons from a main conveyor into a reject lane, reacting within the 40 mm throw.
Bottling stopper gate
Halts PET bottles at a filling infeed gate with damped force instead of a hard metal stop.
Trim fixture clamp
Holds injection-moulded caps in a secondary trimming fixture with roughly 589 N of usable force.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF50X40S the Right Cylinder?
Below this size, the 40 mm bore tops out at 628.3 N push at 0.5 MPa; above it, the 63 mm bore offers 1557.9 N. A 40 mm stroke makes rod alignment matter more than rod length - check coupling concentricity so the short travel does not bind. Do not expect the cylinder to hold a load against air loss; the piston will drift and only the cushion softens travel ends, so specify a rod lock for load-holding duties. The M14x1.5 male rod accepts I or Y knuckles, and 1/4" ports feed both sides.
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 MARF50X40S FAQ
At 0.5 MPa: 981.3 N push, 880.8 N pull. At 0.7 MPa: 1373.8 N push. Maximum theoretical force at 1.0 MPa is 200.1 kgf. Bore 50 mm, stroke 40 mm, 16 mm rod with M14x1.5 thread, 1/4" air ports.
Even short, fast strokes hammer the covers - at up to 800 mm/s the piston carries real momentum. The variable air cushion at both ends is tuned with the needle screws on first run, so impacts fade and cycle life stretches without slowing the machine.
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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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