Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCMLB
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCMLB 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 MAC20X125SCMLB
Footed and cushioned, the MAC20X125SCMLB bolts flat to a machine plate: an LB foot bracket under a riveted stainless round barrel, 20 mm bore, 125 mm stroke, double acting with an adjustable air cushion at both ends. The hard-chrome plated carbon-steel rod runs in the stainless tube with low, stable friction across the 30-800 mm/s speed band.
Expect 157 N forward and 132 N return at 0.5 MPa, scaling to 220 N forward at 0.7 MPa, with a 32 kgf theoretical ceiling. The 0.5 MPa push equals about 16 kgf of vertical lift; halve that for a 2:1 margin and this cylinder lifts about 8 kg - a realistic figure when sizing a light lift or press fit. The magnet fitted as standard pairs with CMSG, DMSG or EMSG switches.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCMLB Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCMLB |
|---|---|
| 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 MAC20X125SCMLB
| 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 MAC20X125SCMLB Is Used
Small parts carrier lift
Lifts a parts carrier of about 8 kg between bench and bin over the 125 mm stroke, keeping a 2:1 margin under the 157 N rating.
Date-coder press on a bagging line
Presses a coding head onto film pouches; the foot mount absorbs the reaction of each impression without shifting the body.
Belt tension take-up on a light conveyor
Applies about 94 N of working pull to a take-up carriage, the cushion letting the idler settle without bounce.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X125SCMLB the Right Cylinder?
Weigh the 16 mm bore (100 N at 0.5 MPa) against the 25 mm bore (245 N) before settling on this 20 mm middle option. LB feet fix the body while the CM round-end cover still takes a pivot fitting at the rod side. Long strokes bend rods: over 125 mm, guide the load externally rather than loading the 8 mm rod sideways. And since a double-acting MAC cannot resist gravity once air is removed, fit a rod lock or pilot check valve wherever drift would matter.
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 MAC20X125SCMLB FAQ
157 N push and 132 N pull at 0.5 MPa; 220 N push and 185 N pull at 0.7 MPa; 32 kgf theoretical maximum. Ports are 1/8", the rod thread is M8x1.25, and operating pressure is 0.15-1.0 MPa (22-145 psi).
The feet bolt the barrel flat to a plate or frame, leaving the CM round-end cover free to carry a pivot fitting at the rod end - a stable base for pushers and light lifts.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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