Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SU 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 MAC20X85SU
Compact, round and stainless on the pressure path, the MAC20X85SU extends 85 mm under double-acting air with a variable cushion at each end of travel. The U flat-end back cover presents a flat face for direct bolting to a plate, keeping the cylinder nose flush against machine structure. At 0.5 MPa the bore develops 157 N of push and 131.9 N of pull.
Because the barrel is stainless steel and the rod is hard-chrome plated carbon steel, this mini tolerates washdown and outdoor moisture far better than painted alternatives - a genuine plus in food-adjacent and coastal sites. Its usable force at 0.5 MPa is around 94 N once you keep a sensible margin below the rating, enough to lift about 8 kg vertically. The standard built-in magnet pairs with CMSG, DMSG or EMSG switches, and speed spans 30-800 mm/s.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SU |
|---|---|
| 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 MAC20X85SU
| 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 MAC20X85SU Is Used
Tote pusher on sortation
Nudges totes off a sorter lane at a distribution hub; the flat back cover bolts flush to the frame rail.
Bench vise kicker
Kicks a small part out of a jig on a maintenance bench, using the full 85 mm stroke to clear the fixture.
Label applicator press
Presses labels onto detergent bottles, where the stainless surfaces cope with splash and daily wipe-downs.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X85SU the Right Cylinder?
Weigh it against neighbours: the 16 mm bore offers 100.5 N push at 0.5 MPa for tighter spaces, while the 25 mm bore jumps to 245.3 N when loads climb. A MAC cannot hold a load with air off - the piston drifts freely - so a rod lock or pilot check valve belongs in the circuit for any parked load. The U flat end bolts straight to plates; choose CA pivot or CM round covers if the mount needs a pin, or add LB foot, FA flange and SDB pivot brackets.
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 MAC20X85SU FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; 219.8 N push and 184.7 N pull at 0.7 MPa; up to 32 kgf theoretical at 1.0 MPa. Pressure window 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-800 mm/s, 1/8" ports, M8x1.25 rod thread, 8 mm rod, 85 mm stroke.
Yes - the magnet is built into the piston as standard across the MA family, not an upcharge. CMSG, DMSG and EMSG switches slide onto the barrel and give position feedback along the 85 mm travel without any modification to the cylinder.
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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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