Airtac MAC Stainless Steel Mini Air Cylinder MAC25X45SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X45SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 45mm 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
- Stroke45 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 MAC25X45SU
Short 45 mm strokes hide a lot of engineering, and the MAC25X45SU packs the essentials: a stainless round barrel rolled onto aluminium covers, a hard-chromed 10 mm rod, and double-acting air power with a variable cushion you can bleed in at each end. Pressure range is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
At 0.5 MPa the bore pushes 245.3 N, equivalent to lifting about 25 kg - budget roughly 12 kg of vertical lift per cylinder once you keep a 2:1 safety margin. The U flat-end cover gives a clean fixed mount, and because the magnet is built in as standard, a CMSG or EMSG switch adds end-position feedback without a special piston.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X45SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X45SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 45 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 MAC25X45SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×45 | 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 MAC25X45SU Is Used
Ejector on a small press jig
Ejects finished bushings from a drilling jig in 45 mm; 245.3 N at 0.5 MPa clears the part before the next cycle starts.
Presence check in an electronics tester
A DMSG switch on the standard magnet confirms the probe seated; the stainless body suits flux residue and IPA wipe-down.
Part stop on a vibratory feeder rail
Blocks the next component at the nest with a short 45 mm jab; the cushions keep the stop quiet anywhere from 30-800 mm/s.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X45SU the Right Cylinder?
Work the numbers both ways: the 20 mm bore equivalent pushes 157.0 N at 0.5 MPa and the 32 mm bore 402.2 N, so 245.3 N sits comfortably in between for compact clamping and ejecting. With such a short stroke, cushion adjustment matters more than side load - back the needle screws off on first run, then close them gradually. The U flat-end suits direct bolting, and the piston magnet (standard) pairs with CMSG or DMSG switches for position feedback.
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 MAC25X45SU FAQ
245.3 N push and 206.1 N pull at 0.5 MPa; 343.4 N push and 288.5 N pull at 0.7 MPa; 50 kgf theoretical maximum at 1.0 MPa. Ports are 1/8" and the hard-chromed rod thread is M10x1.25.
No - like any double-acting cylinder without valves it drifts when supply is lost. The cushions soften the stroke ends but never lock the rod; add a rod lock or pilot check valve. On the plus side, the stainless barrel and chrome rod shrug off the corrosion that seizes painted mini bodies.
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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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