Airtac MAC Stainless Steel Mini Air Cylinder MAC25X170SU
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC25X170SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø25mm bore and 170mm 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
- Stroke170 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 MAC25X170SU
Flat-ended and fixed, the MAC25X170SU swaps the CA pivot eye for a plain U rear cover that seats flush on machine plates, so there is no extra bracket to buy. The 25 mm bore is double acting with adjustable air cushions at both ends and pushes 245.3 N at 0.5 MPa, pulling 206.1 N back; at 0.7 MPa push reaches 343.4 N over a 170 mm stroke.
Count on roughly 147 N of practical working force at 0.5 MPa, enough to lift about 12 kg vertically once you allow a 2:1 margin. The stainless tube is rolled onto aluminium covers with a grease-retaining two-way piston seal, a build that shrugs off washdown in food and packaging plants. CMSG, DMSG and EMSG switches clip onto the standard magnet for position feedback.
Airtac MAC Stainless Steel Mini Air Cylinder MAC25X170SU Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC25X170SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 170 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 MAC25X170SU
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×170 | 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 MAC25X170SU Is Used
Case squaring pusher on a carton sealer
The flat U rear cover bolts square to the pusher plate, squaring cartons before taping at 245 N with a cushioned home position.
Stop gate on an assembly pallet line
Extends 170 mm to halt pallet flow; an EMSG switch on the built-in magnet signals the gate state to the PLC.
Press-assist ejector in a small stamping die
Hard-chrome rod ejects formed blanks after the press stroke; the stainless barrel resists the oil mist around the die set.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC25X170SU the Right Cylinder?
A bore 20 unit gives 157 N of push and a bore 32 gives 402.2 N at 0.5 MPa; the 25 mm splits the difference for gates, clamps and small lifts. The U flat end pairs naturally with LB foot or FA flange mounts when the load must stay aligned, while pivot motion is better handled with a rod knuckle. At 170 mm of stroke, guide the 10 mm rod against side thrust with external bushings.
Do not size this cylinder to hold a load against gravity: with air off or the valve centred the rod drifts freely. Fits 1/8" ports and a 0.15-1.0 MPa (22-145 psi) supply; air must be filtered to 40 um.
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 MAC25X170SU FAQ
At 0.5 MPa: 245.3 N push, 206.1 N pull. At 0.7 MPa: 343.4 N push. Theoretical ceiling near 50 kgf at 1.0 MPa. Runs on 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, 30-800 mm/s speed.
The U flat end gives a clean bolted face for fixed mounts such as LB feet or FA flanges, while CA adds a pivot eye for linkages. Either way you keep the stainless riveted body, the standard magnet and 1/8" ports on this 25 mm bore.
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