Airtac MAC Stainless Steel Mini Air Cylinder MAC20X275SCA
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC20X275SCA is a genuine double acting + cushion standard round-body mini air cylinder with a Ø20mm bore and 275mm 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
- Stroke275 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 MAC20X275SCA
Pivot-mounted linkages are where the MAC20X275SCA earns its keep: 275 mm of stroke, 157 N push and 131.9 N pull at 0.5 MPa, and a CA back cover that hangs on a clevis without adapters. Double-acting air drives the rod in both directions while variable cushions at each end tame end-of-stroke shock across the 30-800 mm/s speed band.
Underneath sits the MA-family rolling-packed body - stainless round barrel, hard-chrome plated rod, aluminium-alloy covers - so washdown splash and humid air cause little trouble. Budget about 94 N for the actual work at 0.5 MPa and the 157 N rating becomes your safety headroom instead of your ceiling. The piston magnet is standard kit, ready for CMSG / DMSG / EMSG switches to flag end positions from day one.
Airtac MAC Stainless Steel Mini Air Cylinder MAC20X275SCA Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC20X275SCA |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 275 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 MAC20X275SCA
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×275 | 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 MAC20X275SCA Is Used
Flap gate on a grain-auger intake
The CA pivot swings the gate arm open and shut against grain head pressure; 157 N at 0.5 MPa turns the flap with margin to spare over a 275 mm sweep.
Carton flap tucker on a mini case packer
Folds bottom flaps through a 275 mm working path; cushions soften the tuck stroke at speed so thin corrugate is not bruised at the end of travel.
Belt-tension take-up on a conveyor tail shaft
Pivots the tail pulley bracket to stretch the belt; the 131.9 N retract force at 0.5 MPa sets the tension, and the standard magnet signals when tension is applied.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC20X275SCA the Right Cylinder?
Compare against the 16 mm bore (100.5 N push at 0.5 MPa) before committing - if the load is marginal, the smaller barrel saves space; if 157 N feels tight, the 25 mm bore delivers 245.3 N. Air loss means movement: centre the valve and the rod will creep under load, so fit a rod lock or pilot check valve wherever a position must be kept. Add FA flange, LB foot or SDB pivot brackets and I or Y rod knuckles as needed, and note that 275 mm of travel on an 8 mm rod punishes side loads - guide the mass externally.
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 MAC20X275SCA FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; push 219.8 N and pull 184.7 N at 0.7 MPa; theoretical peak 32 kgf at 1.0 MPa. Air supply 0.15-1.0 MPa (22-145 psi), filtered to 40 um, speed 30-800 mm/s. Threads: 1/8" cylinder ports and an M8x1.25 rod.
No. The MAC20X275SCA carries its piston magnet as standard, so CMSG, DMSG or EMSG switches mount on the barrel for end-of-stroke or mid-stroke signalling without a special build. Position feedback costs you only the switch itself.
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