Airtac MAC Stainless Steel Mini Air Cylinder MAC25X420SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X420SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 420mm 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.
- BoreØ25 mm
- Stroke420 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X420SCM
The CM round-end back cover is what sets the MAC25X420SCM apart: it gives a clean pivot point on the rear cap while the 25 mm stainless body delivers 245.3 N of push at 0.5 MPa over a 420 mm stroke. Double acting with a variable air cushion at each end, it rides on a riveted stainless-steel barrel with a hard-chrome plated rod that laughs at moisture and mild chemicals.
Keep real-world loading near 147 N - about six tenths of the 0.5 MPa rating - and the cylinder will run cool and last; in lifting terms that is roughly 12 kg vertical with a 2:1 margin. The piston magnet is standard equipment, so CMSG, DMSG or EMSG switches drop on for stroke-end detection.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X420SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X420SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 420 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MAC25X420SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×420 | 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 MAC25X420SCM Is Used
Sawmill board stop
At a sawmill stacking station the cylinder raises a board stop over 420 mm; the CM round-end cover pins directly to the stop arm pivot.
PCB carousel indexer
An electronics carousel indexes trays between test and packing; 245.3 N at 0.5 MPa is far beyond the friction load, and a DMSG switch confirms each index.
Aquaculture sluice gate
Opening a sluice gate on a fish-farm tank, the stainless barrel and chrome rod stand up to constant splash, with the variable cushion settling the gate softly.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X420SCM the Right Cylinder?
Compare before committing: the 20 mm bore manages 157 N at 0.5 MPa, the 32 mm bore 402.2 N, so pick the neighbour that fits your force band. The cushion is a shock absorber, not a brake - with the valve centred the piston still drifts, so a rod lock or pilot check valve is needed where position must be held. At 420 mm of stroke the 10 mm rod will bow under side load, so guide the load in slides or rails and choose the CM round-end cover, or an FA flange, LB foot or SDB pivot bracket, to match your mount.
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 MAC25X420SCM FAQ
Push is 245.3 N and pull 206.1 N at 0.5 MPa; at 0.7 MPa it reaches 343.4 N push and 288.5 N pull, with 50 kgf theoretical maximum at 1.0 MPa. Bore 25 mm, port 1/8", rod 10 mm with M10x1.25 male thread, speed 30-800 mm/s, supply 0.15-1.0 MPa (22-145 psi).
The barrel is high-precision stainless steel rolled onto aluminium-alloy covers, and the carbon-steel rod is hard-chrome plated to 20 um. That mix resists corrosion and survives washdown in food, outdoor and humid areas where painted or plain aluminium minis pit and seize, while the internal two-way seal stores grease for long, dry-run-free service.
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