Airtac MAC Stainless Steel Mini Air Cylinder MAC25X28SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X28SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 28mm 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
- Stroke28 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 MAC25X28SU
Tight decks call for a short throw, and this 28 mm-stroke MAC fits: a 25 mm stainless round barrel that pushes 245.3 N and pulls 206.1 N at 0.5 MPa, double acting with adjustable air cushioning at both ends. Nothing is painted to chip - the tube is stainless steel and the 10 mm rod is hard-chrome plated carbon steel, so coolant splash and humid air barely touch it. Trim the needle screws and cycle between 30-800 mm/s.
Even at this compact stroke the numbers matter: keep real work near 147 N at 0.5 MPa, and read the bore as a 25 kg vertical-lift equivalent, about 12 kg once you halve it for a 2:1 margin on a clamp or riser. Every unit carries its magnet as standard equipment, so a CMSG, DMSG or EMSG switch bolts on for part-present signals. Supply range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi).
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X28SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X28SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 28 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 MAC25X28SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×28 | 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 MAC25X28SU Is Used
Filling head riser
Drops a filling nozzle 28 mm into a coffee pod nest each cycle; 245 N of push seats the head while the cushion removes the landing thump.
Pick-and-place gripper clamp
Closes a pneumatic gripper on PCB trays at the transfer station; 206.1 N of pull at 0.5 MPa retracts the jaws clear of the arm.
Feeder escapement toggle
Toggles a bucket-brigade escapement on a small-parts vibratory line; the standard magnet with an EMSG switch confirms each part is released.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X28SU the Right Cylinder?
Between the 20 mm bore (157.0 N push at 0.5 MPa) and the 32 mm (402.2 N), this 25 mm bore sits in the middle for clamping and short positioning jobs. The U flat-end back cover is the pick when the cylinder bolts flat against a fixture; FA flange and LB foot options cover other frames, and the standard magnet means no special piston is needed for sensing. Short strokes rarely bend rods, but an off-center load on the 10 mm pin still wants a guide. Also note the piston is not locked - with air removed it drifts, so fit a pilot check valve where a clamp must stay gripped.
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 MAC25X28SU FAQ
At 0.5 MPa: 245.3 N push and 206.1 N pull. At 0.7 MPa: 343.4 N push and 288.5 N pull. Theoretical peak on the 25 mm bore is 50.0 kgf at 1.0 MPa. The cylinder is double acting with a variable air cushion, running 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um.
A riveted stainless-steel tube with a hard-chrome plated rod resists coolant splash and washdown far better than painted mini cylinders, and the two-way piston seal stores grease for long service. The U flat-end cover mounts flat against a plate, and the standard built-in magnet pairs with CMSG, DMSG or EMSG switches.
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