Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm 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.
- BoreØ20 mm
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCM
Round ends and a riveted stainless barrel define the MAC20X125SCM: AirTAC's 20 mm bore mini cylinder, double acting with a variable air cushion at both stroke ends. The CM round-end back cover accepts pivot fittings at the rod side without adaptor plates, and the 20 um hard-chrome plated rod keeps sliding friction low across the full 125 mm travel.
This bore produces 157 N forward and 132 N return at 0.5 MPa, and 220 N forward at 0.7 MPa, topping out at a 32 kgf theoretical maximum. Treat roughly 94 N - about 9.5 kgf equivalent - as the practical working push, and the cylinder keeps margin for pressure dips. Fluid is air filtered to 40 um; supply 0.15-1.0 MPa (22-145 psi); temperature window -20 to +70 C.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 125 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
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 MAC Stainless Steel Mini Air Cylinder MAC20X125SCM Is Used
Light hold-down on a drill jig
Holds thin sheet against a drill jig with about 94 N of working force, leaving headroom over the spring-back of the clamped part.
Tray flap tucker on a small former
Folds a cardboard flap through a pivot linkage, the round-end cover mating with the machine's existing clevis point.
Reject pusher at an inspection station
Nudges out-of-tolerance caps off a vision-check chute within the 125 mm stroke, cushioned so parts do not ricochet.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCM the Right Cylinder?
Step down to a 16 mm bore (100 N push at 0.5 MPa) for lighter gates or up to 25 mm (245 N) for stiffer clamping - this 20 mm sits between. The cushion needles ship backed off; open them gradually on first run until the stroke ends quietly. A MAC will not hold the rod when supply drops - the piston simply drifts - so add a pilot check valve or rod lock for any held load. For fixed-base layouts, pair the CM cover with an FA flange or LB foot; the standard magnet accepts CMSG, DMSG 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 MAC Stainless Steel Mini Air Cylinder MAC20X125SCM FAQ
Push 157 N and pull 132 N at 0.5 MPa; push 220 N and pull 185 N at 0.7 MPa; theoretical maximum 32 kgf. Bore 20 mm, stroke 125 mm, ports 1/8", rod thread M8x1.25, speed 30-800 mm/s.
The needle screws at each end arrive backed off; run the cylinder slowly and close them in steps until end-of-stroke bounce disappears at your working speed.
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