Airtac MARF Stainless Steel Mini Air Cylinder MARF40X40S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF40X40S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 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 MARF40X40S
Squat, punchy and ready to bolt down: the MARF40X40S pairs a 40 mm bore with just 40 mm of stroke for short push, clamp and eject moves. Extending force is 628 N at 0.5 MPa (528 N retracting) and 880 N at 0.7 MPa, all from a double-acting body with adjustable air cushions on both ends. Its front flange is part of the rolled cover itself, and the stainless tube with hard-chrome plated rod copes with splashes and humid air that ruin painted minis.
Treat 377 N as the practical working push at 0.5 MPa, which corresponds to lifting about 32 kg vertically at a 2:1 margin. Cushion needles on both covers let you soften the short travel, the piston magnet is fitted as standard for CMSG / DMSG / EMSG switches, and speed is adjustable from 30 to 800 mm/s across a 0.15-1.0 MPa (22-145 psi) supply.
Airtac MARF Stainless Steel Mini Air Cylinder MARF40X40S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF40X40S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MARF40X40S
| 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. |
| ×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 MARF40X40S Is Used
Small bearing pressing
Around 377 N of working push at 0.5 MPa presses small bearings into motor end bells where a full press would be oversized.
Tote kick-off
The short stroke kicks small totes onto an outfeed roller track, with both cushions tuned to stop the pusher cleanly.
Sample vial indexing
Precise 40 mm advance-and-return indexes sample vials under a lab dispenser, and the built-in magnet signals position to the PLC.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF40X40S the Right Cylinder?
Where 628 N overshoots the job, the 32 mm MAR gives 402 N at 0.5 MPa; where you need roughly 1.5 times more, the 50 mm bore reaches 981 N. This cylinder holds no position on air failure - the rod simply drifts - so fit a rod lock when a part must stay clamped through a pressure drop. The integrated F flange removes bracket selection from your BOM, and every unit ships magnetic for sensor retrofits.
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 MARF40X40S FAQ
Expect 628.3 N pushing and 527.8 N pulling at 0.5 MPa; at 0.7 MPa the figures become 879.6 N and 738.9 N, and the theoretical peak is 128.1 kgf at 1.0 MPa. It is a 40 mm bore with 40 mm stroke, 16 mm hard-chrome rod threaded M12x1.25, a 1/8" air port and 0.15-1.0 MPa (22-145 psi) working pressure.
Adjust the needle screws at both covers on first run, opening them until the rod just reaches the end without bounce, then close slightly. This keeps the 40 mm travel from hammering the covers at speeds up to 800 mm/s.
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