Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 550mm 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.
- BoreØ25 mm
- Stroke550 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SU
With a flat-end U back cover instead of a pivot cap, the MAC25X550SU bolts flush against a plate or machine wall. The 25 mm stainless barrel is double acting with a variable cushion at both ends, pushing 245.3 N at 0.5 MPa and 206.1 N on the return side. Its 550 mm stroke is a made-to-order length, since standard bore 25 builds stop at 500 mm.
Keep real pushing duty near 147 N at 0.5 MPa and the cylinder runs cooler and lasts longer, with 343.4 N available if you raise supply to 0.7 MPa. The hard-chrome plated carbon-steel rod inside a stainless tube takes humidity, splash and outdoor dust far better than painted aluminium minis. A magnet ships inside as standard equipment, ready for CMSG, DMSG or EMSG reed switches. Proof pressure is 1.5 MPa (215 psi).
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 550 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MAC25X550SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×550 | 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 MAC25X550SU Is Used
Welding-jig clamp reach
Reaches 550 mm across a welding jig to clamp a bracket clear of the torch path, cushioning the clamp-in.
Test-rig drawer ejector
Pushes an instrument drawer fully out of a burn-in test cabinet so an operator can swap samples.
Bench straightening press
Applies about 147 N of controlled straightening force to light gauge brackets at a repair bench.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X550SU the Right Cylinder?
Compare at 0.5 MPa: bore 20 pushes 157.0 N, this bore 245.3 N, bore 32 reaches 402.2 N, so one step covers most mini-cylinder jobs. The flat U end fixes directly, while FA flange, LB foot and SDB pivot brackets handle other frames. Remember the MAC cannot hold a load on its own; if air drops the rod moves, so use a rod lock or pilot check valve wherever a part must stay in place. Over 550 mm of travel, guide the load externally so the 10 mm rod sees thrust only.
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 MAC25X550SU FAQ
Push at 0.5 MPa is 245.3 N and pull is 206.1 N; at 0.7 MPa push reaches 343.4 N. The theoretical ceiling at 1.0 MPa is 50.0 kgf. The bore 25 port is 1/8" and the male rod thread is M10x1.25.
Both ends carry a variable air cushion with needle screws. Leave them fully open on first run, then close gradually until end-of-stroke noise at your working speed between 30 and 800 mm/s disappears.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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