Airtac MAC Stainless Steel Mini Air Cylinder MAC20X220SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X220SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 220mm 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
- Stroke220 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 MAC20X220SU
Behind the 20 mm stainless barrel of the MAC20X220SU sits a double-acting piston delivering 157 N at 0.5 MPa on extend and 131.9 N on retract. The U flat-end back cover gives a plain machined face that seats directly against machine plates with no intermediate bracket. A variable air cushion works at each end of the 220 mm stroke, so you can open the needles for gentle stops or close them for snappier cycling at up to 800 mm/s.
The riveted round body pairs a stainless-steel tube with a hard-chrome plated carbon-steel rod, a build that shrugs off condensation and light washdown where painted minis bubble and rust. Sensor readiness comes free: the piston magnet is standard equipment, so CMSG, DMSG and EMSG switches fit without special orders. For sizing, the 157 N rating converts to about 94 N of practical force at 60 percent duty, equivalent to hoisting roughly 8 kg vertically with a 2:1 margin.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X220SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X220SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 220 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 MAC20X220SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×220 | 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 MAC20X220SU Is Used
Guard lid lift
Lifts a hinged acrylic guard lid on a small press cell; the U face bolts flat to the machine plate and the cushion eases the lid at the top of travel.
Index pin ejector
Ejects an index pin from a rotary table every cycle; 157 N at 0.5 MPa clears the taper and the 131.9 N pull retracts it home.
Coolant valve arm
Drives a coolant valve arm in the wet zone of a CNC cell, where the stainless barrel resists tramp-oil mist and splash that corrode painted bodies.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X220SU the Right Cylinder?
A MAC16 reaches only 100.5 N at 0.5 MPa while a MAC25 manages 245.3 N, so this 20 mm bore is the middle path for 100-200 N jobs. Note the piston cannot hold position on lost air or a centred valve because it drifts, so spec a rod lock or pilot check valve for suspended loads. With 220 mm of unsupported 8 mm rod, keep side loads off the bearing: guide the tooling externally and consider an I or Y rod knuckle on the U end face.
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 MAC20X220SU FAQ
Extension force is 157 N at 0.5 MPa and 219.8 N at 0.7 MPa; retraction gives 131.9 N and 184.7 N respectively, with a theoretical ceiling of 32.0 kgf at 1.0 MPa. Supply pressure runs 0.15-1.0 MPa (22-145 psi) through the 1/8 inch ports, proof tested to 1.5 MPa (215 psi).
No. Every MAC20X220SU ships with the piston magnet fitted as standard, so CMSG, DMSG or EMSG switches attach to the barrel wherever the 220 mm stroke needs a signal. The magnet sits inside the piston from the factory and adds nothing to the price.
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