Airtac MARF Stainless Steel Mini Air Cylinder MARF40X125S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF40X125S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø40mm bore and 125mm 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
- Stroke125 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 MARF40X125S
One hundred twenty-five millimetres of reach from a 40 mm bore makes this MAR a natural for slide actuation and part transfer across wider machines. Push force is 628 N and pull 528 N at 0.5 MPa, climbing to 880 N and 739 N at 0.7 MPa; treated as real work, budget about 377 N, or count on lifting roughly 32 kg vertically with a 2:1 margin. The variable cushion at both ends is worth setting carefully at this stroke, since a faster piston carries more energy into each end cap.
Construction is the classic round MA body: a stainless-steel tube rolled together with aluminium-alloy covers and a stainless block, running a hard-chrome plated 16 mm rod. The front flange is integral - nothing extra to buy - and the standard piston magnet pairs with CMSG, DMSG or EMSG switches for stroke-end signalling. Supply 0.15-1.0 MPa (22-145 psi) of 40 um filtered air.
Airtac MARF Stainless Steel Mini Air Cylinder MARF40X125S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF40X125S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 MARF40X125S
| 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. |
| ×125 | 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 MARF40X125S Is Used
Parts-drawer actuator
Extends a loaded components drawer 125 mm on a tool crib shuttle; the slide guides the weight so the 16 mm rod sees pull only.
Door-panel clamp in a weld cell
Pulls a clamp arm over sheet-metal door skins, where 528 N of retract force at 0.5 MPa presses the panel firmly against the fixture pins.
Case pusher at a carton erector
Squares folded cases onto the erector conveyor, with the cushion tuned so 15 kg board stacks stop without a bang.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF40X125S the Right Cylinder?
Compare first: a 32 mm MAR at 402 N may suffice for lighter slides, and the 50 mm bore (981 N at 0.5 MPa) covers heavier pushes. Long strokes expose the rod - keep lateral loads on an external guide rather than the 16 mm rod itself, especially near the top of the 30-800 mm/s speed range. And because the cushion softens the stroke end but acts as no brake, an unpowered stop still lets the load drift; fit a rod lock if the slide must hold mid-travel. The flange mounts the body directly, and I or Y knuckles can be added at the M12x1.25 rod thread.
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 MARF40X125S FAQ
Extend force is 628 N at 0.5 MPa and 880 N at 0.7 MPa; retract is 528 N and 739 N respectively. Theoretical peak: 128 kgf at 1.0 MPa. Keeping continuous duty near 377 N preserves the seals and the hard-chrome rod surface.
No. The F in the model code means the front flange is riveted into the cylinder itself, so one bolt circle on a machine plate completes the install. Only rod-end knuckles such as I or Y types are ordered separately.
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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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