Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 85mm 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
- Stroke85 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 MAC20X85SCM
A 20 mm bore in a stainless rolled barrel, an 85 mm stroke, and double-acting air power with a tunable cushion at both ends - that is the MAC20X85SCM. Its hard-chrome plated carbon-steel rod resists scuffing through repetitive cycling, and the aluminium covers are riveted tight against the tube for a seal that survives dusty plants. Rated 157 N push and 131.9 N pull at 0.5 MPa.
The CM round-end back cover gives a compact nose you can pin or thread directly into a fixture. Count on about 94 N of honest working force at 0.5 MPa, or roughly an 8 kg vertical lift when you halve the 16 kg theoretical figure for a 2:1 safety factor. Cushion needle screws let you soften landings so you can push cycle speed toward 800 mm/s without the covers taking a beating. The magnet comes built in, ready for CMSG, DMSG or EMSG switches.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 85 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 MAC20X85SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×85 | 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 MAC20X85SCM Is Used
Pallet-nailer strike
Drives a staple head into pallet blocks on a repair bench; the cushion tames the recoil at end of stroke.
Valve test rig clamp
Clamps a 1/2 inch ball valve into a leak-test manifold, holding with about 94 N of usable force at 0.5 MPa.
Solder-reel lower
Lowers a solder reel 85 mm to a feed roller on an electronics line - an easy 8 kg vertical job with margin to spare.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SCM the Right Cylinder?
Between the 16 mm bore (100.5 N push at 0.5 MPa) and the 25 mm bore (245.3 N), this 20 mm unit sits in the mid band. It will not park a load by itself - when supply drops, the rod coasts wherever the load takes it - so spec a pilot check valve or rod lock for held positions. The CM round end suits pinned fixtures; FA flange, LB foot and SDB pivot brackets, plus I and Y rod knuckles, round out the mounting options.
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 MAC20X85SCM FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; at 0.7 MPa, 219.8 N push and 184.7 N pull; 32 kgf theoretical maximum at 1.0 MPa. Operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi). Speed range 30-800 mm/s, variable air cushion at both ends, -20 to +70 C, 1/8" ports, M8x1.25 male rod thread on an 8 mm rod.
Back both needle screws fully off before the first strokes, then close them gradually until landings quiet down. The cushion is variable air, not a fixed bumper, so you trade a little stroke length for shock control and can run faster cycles on heavier loads.
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