Airtac MAC Stainless Steel Mini Air Cylinder MAC50X90SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC50X90SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø50mm bore and 90mm 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
- Stroke90 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 MAC50X90SU
A flat-end U back cover gives MAC50X90SU a fixed mounting face: bolt it flush to a fixture and the rod pushes 981 N (pulls 881 N) at 0.5 MPa, double-acting with a variable air cushion at each end. The riveted stainless barrel and hard-chrome carbon-steel rod survive splash, coolant mist and outdoor dust that wreck painted mini cylinders.
Because the cushion is adjustable, you can raise cycle speed toward the top of the 30-800 mm/s range and still land loads quietly. A practical sizing rule from the rating: count on roughly 589 N of useful push at 0.5 MPa, which in a vertical lift is about 50 kg with a 2:1 margin. The piston magnet is factory-fitted, so CMSG / DMSG / EMSG reed switches clip on with no special order.
Airtac MAC Stainless Steel Mini Air Cylinder MAC50X90SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC50X90SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 90 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 MAC50X90SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×90 | 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 MAC50X90SU Is Used
Weld-fixture clamp
Clamps steel brackets during MIG tacking; the flat U face bolts straight to the fixture table and 589 N of working force holds the joint through the tack.
Ejector ram
Knocks formed cartons off a forming nest at up to 800 mm/s; the variable cushion stops the ram from cracking the covers on fast cycles.
Index-table lock pin
Pushes a locking pin into a rotary table's index ring; the stainless barrel shrugs off the coolant splash found around machine bases.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC50X90SU the Right Cylinder?
Comparing bores: 40 mm delivers 628 N push at 0.5 MPa if the load is lighter, while the 63 mm bore reaches 1558 N when you need the biggest force this family makes. The U cover bolts flat, and AirTAC's FA flange, LB foot or SDB pivot bracket can be added when the frame calls for another fixing point. Ports are 1/4" on this 50 mm bore. With 90 mm of stroke, keep bending loads off the rod and guide the workpiece instead.
Note that a centred valve lets the piston drift - nothing in a plain double-acting cylinder holds the load, so add a rod lock or pilot check valve where a position must be kept under power loss.
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 MAC50X90SU FAQ
Push at 0.5 MPa is 981 N and pull 881 N; at 0.7 MPa push climbs to 1374 N with 1233 N on retract. Theoretical maximum is 200 kgf at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s, cushion adjustable at both ends.
The U cover gives a fixed bolted face for clamps and ejectors, while CA suits swinging linkages on a pin. Either way you get the same stainless round barrel, the same 90 mm stroke on a 50 mm bore, and the built-in magnet that takes CMSG, DMSG or EMSG switches as standard.
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