Airtac MARF Stainless Steel Mini Air Cylinder MARF40X75S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF40X75S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø40mm bore and 75mm 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
- Stroke75 mm
- Port size1/8"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MARF Stainless Steel Mini Air Cylinder MARF40X75S
Short, stiff and flange-ready, the MARF40X75S squeezes a 40 mm double-acting piston into 75 mm of travel for pins, stops and small kickers. The riveted MA body - stainless barrel, aluminium covers, stainless block - seals as one rolled unit, and the adjustable air cushion at each end lets you tune the stop so the mechanism is never hammered. The front flange is part of the cover, not an add-on.
Expect 628 N of push and 528 N of pull at 0.5 MPa (73 psi), or 880 N of push at 0.7 MPa. Work to about 377 N of that as dependable output; as a weight equivalent, 628 N is close to 64 kgf, meaning about 32 kg can be lifted vertically with a 2:1 margin. The hard-chromed rod plus stainless barrel shrug off coolant splash, and the piston magnet is standard, pairing with CMSG, DMSG or EMSG switches.
Airtac MARF Stainless Steel Mini Air Cylinder MARF40X75S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF40X75S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 MARF40X75S
| 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. |
| ×75 | 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 MARF40X75S Is Used
Rotary dial index pin
Locks a rotary indexing table between stations with a 75 mm pin engagement; cushions soften the lock-in so the dial is never jarred off position.
Corrugated feeder sheet stop
Stops the leading sheet on a corrugated feeder to set the register; the short stroke and CMSG sensing give fast, repeatable stops at line speed.
Parcel chute diverter flap
Swings a diverter flap between two parcel chutes in a sorting hub; 628 N of push at 0.5 MPa moves the flap against belt pressure and product contact.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF40X75S the Right Cylinder?
Seventy-five millimetres of travel usually means a pin, stop or small ejector; if your task is only a light confirm or sensor trip, a 32 mm MAR (402 N push at 0.5 MPa) is the leaner choice, while a 50 mm bore (981 N) suits heavier pressing work. This 40 mm unit, pushing 628 N at 0.5 MPa, covers the wide middle. Operate anywhere in 0.15-1.0 MPa (22-145 psi).
The front-flange mount is part of the cover itself - there is no separate foot or flange accessory to order for the MAR. Note that standard MARs do not latch: with air removed the rod moves under load, so a rod lock is the answer where a pin must stay engaged. The piston magnet, standard on every unit, reads position through CMSG or EMSG switches.
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 MARF40X75S FAQ
Design on 628.3 N push and 527.8 N pull at 0.5 MPa; at 0.7 MPa the figures rise to 879.6 N push and 738.9 N pull, with 128.1 kgf as the theoretical maximum at 1.0 MPa. The 1/8" port feeds the bore and the male rod thread is M12x1.25.
Speed range is 30-800 mm/s. On a 75 mm stroke the cushions have little length to work with, so back the needle screws out slightly - full deceleration on such short travel can make the cycle sluggish. The round stainless barrel with its hard-chromed rod keeps gland wear low even under continuous high cycling.
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