Airtac MARF Stainless Steel Mini Air Cylinder MARF40X50S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF40X50S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø40mm bore and 50mm 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
- Stroke50 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 MARF40X50S
A 40 mm bore with just 50 mm of travel, the MARF40X50S is built for clamping and ejecting in cramped fixtures. AirTAC rolls the aluminium covers and stainless block onto the stainless barrel, giving a riveted round-body cylinder that shrugs off washdown; double-acting power and a variable air cushion at each end come as standard, as does the front-flange mount on the cover itself.
Output at 0.5 MPa (73 psi) is 628 N of push against 528 N of pull, rising to 880 N of push at 0.7 MPa. For real work, figure roughly 377 N of dependable force - expressed as weight, 628 N is about 64 kgf, so a 32 kg vertical lift keeps a 2:1 margin. Because the magnet is fitted in the piston from the factory, CMSG, DMSG or EMSG switches bolt on for end-position feedback without ordering specials.
Airtac MARF Stainless Steel Mini Air Cylinder MARF40X50S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF40X50S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MARF40X50S
| 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. |
| ×50 | 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 MARF40X50S Is Used
Checkweigher reject kicker
Flicks underweight packs off a checkweigher belt in 50 mm; the 30-800 mm/s speed range suits the short hop and a magnet-driven CMSG switch confirms the reject fired.
Drilling jig clamp
Clamps aluminium brackets into a drill jig with about 377 N of dependable working force at 0.5 MPa - enough hold-down for light drilling and milling cuts.
Carton flap tucker
Folds the end flaps of small cartons on a packaging line; the short 50 mm stroke keeps cycle time low while end cushions stop the flap arm from slamming.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF40X50S the Right Cylinder?
Step-size the job before committing: if the load needs under about 250 N of real work, a 32 mm MAR (402 N push at 0.5 MPa) costs less; if it needs more, the 50 mm bore pushes 981 N in the same stainless round format. At 628 N of push this 40 mm unit suits clamps, ejectors and short kicks. Running window is 0.15-1.0 MPa (22-145 psi) with speed between 30 and 800 mm/s.
Because no MAR holds position on air loss - the piston creeps when pressure drops - pair a rod lock with clamps that must stay shut through a power cut. The front cover's own flange bolts straight onto the jig or fixture, and the built-in magnet works with CMSG or DMSG switches for end-of-stroke confirmation.
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 MARF40X50S FAQ
Push is 628.3 N and pull 527.8 N at 0.5 MPa; raise supply to 0.7 MPa and you get 879.6 N push with 738.9 N pull. Theoretical maximum force is 128.1 kgf at 1.0 MPa. The bore breathes through a 1/8" port and the rod thread is M12x1.25 male.
No - every MAR ships with a magnet in the piston as standard, so CMSG, DMSG or EMSG switches clip onto the stainless barrel and read end positions immediately. No special-order piston or later disassembly is needed.
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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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