Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCMLB
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCMLB is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 25mm 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
- Stroke25 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 MAC20X25SCMLB
Bolt the MAC20X25SCMLB to a machine pad through its LB feet and the 20 mm bore becomes a fixed-base pusher or clamp generating 157.0 N forward and 131.9 N back at 0.5 MPa (72.5 psi). It is double acting with a variable air cushion at both ends, running on air filtered to 40 um across a 0.15-1.0 MPa (22-145 psi) supply band.
The riveted stainless tube and chrome-faced 8 mm rod stay sound in humid or lightly corrosive corners where painted-steel minis bubble and flake. Budget the real work at about 94 N per stroke - the share of the 157 N rating that survives pressure swings - and the cylinder will outlast optimistic sizing. An EMSG or CMSG switch reads end of stroke out of the crate because the magnet ships fitted; proof pressure is 1.5 MPa (215 psi).
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCMLB Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCMLB |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 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 MAC20X25SCMLB
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 MAC20X25SCMLB Is Used
Drill-jig clamp fixture
Bolted through its LB feet to a drilling jig base, the cylinder applies about 94 N of practical clamp force - the reliable share of its 157 N rating - cycle after cycle.
Belt-line side pusher
As a fixed side pusher on a sorting conveyor, the foot mount keeps alignment true; 219.8 N at 0.7 MPa shoves heavier totes off the main lane.
Wire-winding traverse unit
On a small coil winder the rod drives the guide eye across the spool; a CMSG switch at each end triggers reversal, no extra sensor piston needed.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X25SCMLB the Right Cylinder?
Step down to 100.5 N on the 16 mm bore or up to 245.3 N on the 25 mm bore depending on whether 157.0 N at 0.5 MPa leaves the right headroom. The LB foot base holds alignment well, but square the feet against a machined pad so side loads never reach the 8 mm rod - at 25 mm stroke rod bending is a minor risk, yet it grows quickly on longer travels. Should a job need the rod held through an air loss, a rod lock or pilot check valve is required; the MAC itself will relax. FA flange and SDB pivot brackets are the alternatives, and the magnet is standard for CMSG, DMSG and 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 MAC20X25SCMLB FAQ
Push is 157.0 N and pull 131.9 N at 0.5 MPa; at 0.7 MPa the figures are 219.8 N and 184.7 N, and theoretical maximum force is 32.0 kgf at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi) filtered air with 1.5 MPa (215 psi) proof rating, 1/8" ports, an 8 mm chrome rod and 30-800 mm/s speed capability.
An LB foot bracket bolts the barrel flat to a baseplate, which suits pushers, clamps and guides that act in a fixed line. A FA flange suits face mounting and an SDB pivot bracket suits swinging frames, so pick by how the load moves. Whichever you use, the round stainless body and hard-chrome rod give corrosion resistance, and the standard-built magnet accepts CMSG, DMSG and EMSG switches for cycle counting.
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