Airtac MAC Stainless Steel Mini Air Cylinder MAC50X400SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC50X400SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø50mm bore and 400mm 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
- Stroke400 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 MAC50X400SU
Built around a stainless round barrel that is roll-packed onto aluminium covers, the MAC50X400SU delivers 400 mm of double-acting travel with a variable air cushion at each end. At 0.5 MPa (72 psi) it pushes 981 N and pulls 881 N, rising to 1374 N at 0.7 MPa, with a 200.1 kgf theoretical peak. The 16 mm hard-chrome plated rod shrugs off washdown and outdoor damp that would corrode painted-steel minis.
A theoretical vertical lift of about 100 kg at 0.5 MPa (72 psi) is best planned as roughly 50 kg once you keep a 2:1 margin, so parts up to that weight suit this bore. The U flat-end back cover gives a fixed rear mounting without extra brackets, and because the magnet is built in as standard, CMSG, DMSG or EMSG switches drop straight on for end-of-stroke signalling.
Airtac MAC Stainless Steel Mini Air Cylinder MAC50X400SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC50X400SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 MAC50X400SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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 MAC50X400SU Is Used
Reject pusher on a bottle line
Sweeping off-spec bottles off a conveyor lane with a 400 mm sweep at up to 800 mm/s; 981 N at 0.5 MPa (72 psi) clears full rows without stalling.
Slide gate on a paint wash line
Opening a wash-line slide gate between paint batches; the stainless round barrel and chrome rod stand up to overspray and rinse-down that rust painted housings.
Case elevator on a carton palletizer
Lifting carton stacks into a palletizer cell - a theoretical 100 kg lift at 0.5 MPa (72 psi) means real part weights around 50 kg are within reach with margin.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC50X400SU the Right Cylinder?
At 400 mm this is a long-travel bore-50 actuator: guide the load externally or fit I or Y rod knuckles, because side load rather than force is what bends rods on unsupported strokes. For lighter duty the bore-40 MAC delivers 628 N push at 0.5 MPa (72 psi); for more headroom the bore-63 MAC reaches 1558 N. The piston drifts freely when air is lost or the valve centres, so fit a pilot check valve or rod lock if the load must stay put. FA flange or LB foot mounts pair with the U rear cover, and strokes up to 500 mm remain standard for this bore.
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 MAC50X400SU FAQ
At 0.5 MPa (72 psi) it pushes 981 N and pulls 881 N; at 0.7 MPa the figures are 1374 N push and 1233 N pull, with a theoretical maximum of 200.1 kgf at 1.0 MPa. Stroke is 400 mm, inside the 500 mm standard range for bore 50, and speed runs 30-800 mm/s on a 0.15-1.0 MPa (22-145 psi) supply with 1.5 MPa (215 psi) proof pressure.
Yes - the variable air cushion at both ends is set by needle screws. Back them fully off before start-up, then close gradually until end-of-stroke impact disappears; on a 400 mm stroke running up to 800 mm/s this tuning protects the aluminium covers from hammer damage.
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