Airtac MAC Stainless Steel Mini Air Cylinder MAC50X25SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC50X25SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø50mm bore and 25mm 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
- Stroke25 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 MAC50X25SU
Short on stroke, long on muscle: this flat-end U variant packs 981.3 N of push at 0.5 MPa into a 25 mm stroke, close to the theoretical 200.1 kgf ceiling of the 50 mm bore at the full 1.0 MPa. The round stainless barrel is rolled onto aluminium covers in a riveted pack that cannot loosen the way bolted frames do, and the 20 um hard-chrome rod shrugs off the splash zones that pit painted minis.
The double-acting piston retracts with 880.8 N at 0.5 MPa, useful when the return of a loaded tool must be fought rather than followed. Budget roughly 589 N for actual work at 0.5 MPa, about 50 kg of vertical lift with a 2:1 margin. The magnet is included as standard for CMSG, DMSG or EMSG sensing, and the U flat-end cover bolts flat to a machine face or FA flange.
Airtac MAC Stainless Steel Mini Air Cylinder MAC50X25SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC50X25SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 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 MAC50X25SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×25 | 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 MAC50X25SU Is Used
Short-clamp on a CNC fixture
Clamps a casting against a hardened stop on a milling fixture: 25 mm of stroke is enough to close the jaw, and 589 N of usable force holds it through the cut.
Bearing press-assist
Nudges a sealed bearing the last few millimetres into a gearbox housing on a small assembly press, where the cushion stops the ram ringing at bottom dead centre.
Carton kick-off ejector
Flicks an out-of-spec carton sideways off a packaging line conveyor in one short jab; the stainless body copes with routine washdown between shifts.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC50X25SU the Right Cylinder?
For strikes under 30 mm, bore 40 tops out at 628.3 N push at 0.5 MPa and bore 63 starts at 1557.9 N, so the 50 mm bore is the sweet spot for short, hard hits like clamping or ejecting. Keep continuous work near 589 N and let the variable cushion at both ends swallow the snap of a 25 mm hit. Nothing locks the piston when air is cut - if a clamp must stay shut on power loss, fit a rod lock or pilot check valve. Port 1/4", rod thread M14x1.5, running window 0.15-1.0 MPa (22-145 psi) and 30-800 mm/s; LB foot, FA flange and I or Y knuckles handle the fixings.
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 MAC50X25SU FAQ
Push is 981.3 N and pull 880.8 N at 0.5 MPa; at 0.7 MPa push reaches 1373.8 N (pull 1233.1 N), with a theoretical maximum of 200.1 kgf at 1.0 MPa. The 25 mm stroke sits well inside the 500 mm standard maximum for bore 50, the port is 1/4", and the rod thread is M14x1.5.
The magnet is standard - not an option - so CMSG, DMSG and EMSG reed switches mount on the barrel for end-of-stroke signalling. The piston uses a two-way heterogeneous seal that also stores grease, which is why the cylinder runs 30-800 mm/s at 0.15-1.0 MPa (22-145 psi) with minimal lubrication attention.
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