Airtac MARF Stainless Steel Mini Air Cylinder MARF50X70S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF50X70S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø50mm bore and 70mm 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
- Stroke70 mm
- Port size1/4"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MARF Stainless Steel Mini Air Cylinder MARF50X70S
Front-mounted and cushion-softened, the MARF50X70S is AirTAC's round-body mini cylinder for 70 mm strokes. It is double acting, carries a variable air cushion at both ends, and the front flange is part of the front cover itself, so the cylinder bolts straight onto a machine plate with no separate foot or flange to buy. At 0.5 MPa it pushes 981 N and pulls 881 N - enough for medium-duty clamping and transfer tooling.
The riveted construction pairs a stainless-steel barrel with a 16 mm hard-chrome-plated carbon-steel rod, a build that resists mild corrosion and washdown far better than painted-steel minis in damp or food-adjacent plants. A magnet is built in as standard, so CMSG, DMSG or EMSG switches drop straight on for position feedback. For sizing, treat about 589 N as the realistic working force at 0.5 MPa, and expect roughly 100 kg of vertical lift capability at that pressure - about 50 kg if you keep a 2:1 margin.
Airtac MARF Stainless Steel Mini Air Cylinder MARF50X70S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF50X70S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 70 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 MARF50X70S
| 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. |
| ×70 | 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 MARF50X70S Is Used
Carton reject arm
Side-pushes mislabeled cartons off a snack-food conveyor in one 70 mm move; the end cushion damps arrival so the box does not bounce.
VMC fixture clamp
Bolted under the table by its front flange, it clamps aluminium blanks at roughly 981 N while the machining cycle runs.
Tray denesting push
Kicks plastic trays out of a nest on a ready-meal line; the stainless barrel handles daily washdown between shifts.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF50X70S the Right Cylinder?
Check the neighbours first: a MAR 40 bore pushes 628 N at 0.5 MPa and saves space, while a 63 bore gives 1558 N for heavier loads. If your part weighs more than about 50 kg you are already outside a comfortable 2:1 margin at this bore. Because this is an un-locked air cylinder, the piston will drift if supply air is lost - fit a rod lock when the load must stay put on shutdown. The F front flange is machined into the front cover, so no separate FA or SDB accessory applies; I and Y knuckles still thread onto the M14x1.5 rod.
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 MARF50X70S FAQ
At 0.5 MPa this bore pushes 981.3 N and pulls 880.8 N. Raise supply to 0.7 MPa and the figures become 1373.8 N push and 1233.1 N pull. Theoretical maximum force at 1.0 MPa is 200.1 kgf. The operating window is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi).
No. Every MA-series cylinder leaves the factory with the piston magnet already fitted, so CMSG, DMSG or EMSG reed or solid-state switches clamp straight onto the stainless barrel for end-of-stroke signalling - no special-order piston, no extra wait.
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 MARF50X70S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.