Airtac MAC Stainless Steel Mini Air Cylinder MAC50X55SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC50X55SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø50mm bore and 55mm stroke, 1/4" 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.
- BoreØ50 mm
- Stroke55 mm
- Port size1/4"
- Acting typeDouble acting + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC50X55SU
The MAC50X55SU pairs a 50 mm bore with a 55 mm stroke in AirTAC's riveted round-body MAC series. It is double acting - air drives the rod out and pulls it back - and a variable air cushion sits at each end, so the needle screws let you trim end-of-stroke shock and run faster cycles without hammering the covers. At 0.5 MPa the piston pushes with 981 N and pulls with 881 N; at 0.7 MPa push reaches 1374 N, close to a 200 kgf theoretical ceiling. The U flat-end back cover bolts straight onto a fixed face with no adapter bracket needed.
Because the catalogue rating carries no reserve, plan real work at roughly 589 N, which lines up with lifting about 50 kg vertically at a 2:1 margin. The stainless-steel barrel and hard-chrome plated rod laugh at coolant mist and washdown that ruin painted minis, while the built-in magnet - standard on every unit - takes CMSG, DMSG or EMSG switches without a special piston. Speed range spans 30-800 mm/s on air filtered to 40 um.
Airtac MAC Stainless Steel Mini Air Cylinder MAC50X55SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC50X55SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 mm |
| Acting type | Double acting + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 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 MAC50X55SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×55 | 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 MAC50X55SU Is Used
CNC fixture clamping
Clamps aluminium gearbox housings in a 3-axis fixture; the 589 N practical clamp force holds the part square through roughing cuts while coolant sprays over the stainless barrel.
Bench staking press
Drives terminals into connector shells over a 55 mm stroke; the twin air cushions let an operator raise cycle speed until the ram just kisses the bottom of the stroke.
Carton squaring clamp
Holds folding cartons flush on a glue station, where washdown wipes and wet glue would pit a painted mini body but leave the riveted stainless barrel untouched.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC50X55SU the Right Cylinder?
If 981 N at 0.5 MPa is more than the job needs, the 40 mm bore pushes 628 N and pulls 528 N; when tooling gets heavier, step up to the 63 mm bore at 1558 N push and 1457 N pull. Remember the rod is not held: cut the air and it drifts, so a rod lock or pilot check valve is needed wherever a clamp must survive pressure loss. Porting is 1/4 in. on both covers, the rod thread is M14x1.5, and besides the U flat-end back cover you can order FA flange, LB foot or SDB pivot mounts plus I or Y rod knuckles.
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 MAC50X55SU FAQ
At 0.5 MPa it pushes 981.3 N and pulls 880.8 N. At 0.7 MPa push rises to 1373.8 N with 1233.1 N on the return stroke. The theoretical maximum is 200.1 kgf at 1.0 MPa. For practical sizing stay near 60 percent of the 0.5 MPa push figure.
A magnet is built into the piston as standard, so CMSG, DMSG or EMSG switches clip onto the stainless barrel at any stroke position with no special-order parts. For fixing, the U flat-end back cover gives a flat bolted face, and FA flange, LB foot or SDB pivot brackets can be added.
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