Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCM
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCM is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 85mm 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.
- BoreØ40 mm
- Stroke85 mm
- Port size1/8"
- Acting typeDouble acting + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCM
An 85 mm stroke in the 40 mm cushioned class gives the MAC40X85SCM real push: 628 N at 0.5 MPa (rising to 880 N at 0.7 MPa) while pulling back with 528 N. AirTAC rates this double-acting round mini up to 128.1 kgf theoretical, and the variable air cushion at both ends lets you trim end-of-stroke shock so you can run 30-800 mm/s under heavier loads.
The body is a riveted stainless-steel barrel with a hard-chrome plated 16 mm rod - a build that shrugs off washdown and mild corrosion where painted minis fail. Since the magnet is standard, CMSG, DMSG or EMSG switches clip on without a special piston, and a quick sum shows about 377 N of dependable working force at 0.5 MPa, not just the headline rating.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCM Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCM |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 85 mm |
| Acting type | Double acting + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MAC40X85SCM
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×85 | 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 MAC40X85SCM Is Used
Bottling diverter gate
Swings full PET bottles between lanes; 628 N at 0.5 MPa clears a jammed bottle row without hesitation.
Paint-line fixture clamp
Riveted stainless body and 16 mm chrome rod handle booth humidity and periodic washdown of car or bike part jigs.
Timber notch press
The 85 mm stroke punches a 40 mm-deep notch at about 377 N of working force; the variable cushion stops the ram gently.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCM the Right Cylinder?
Compare both directions: the 32 mm bore gives 402 N push at 0.5 MPa and the 50 mm bore gives 981 N, so the 40 mm 628 N class sits between them for medium clamping and lifting. Keep in mind that when the valve centres or air is lost this cylinder simply drifts - add a rod lock or pilot check valve if the load must stay put.
The CM round-end back cover suits clevis-style pivots, and FA flange, LB foot or SDB pivot brackets bolt on for fixed mounting. Port is 1/8" on the 40 mm bore with a M12x1.25 male rod thread.
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 MAC40X85SCM FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa push rises to 879.6 N and pull to 738.9 N. Theoretical maximum is 128.1 kgf at 1.0 MPa. Supply window is 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, and the 1/8" ports take 40 um filtered air.
Back both needle screws fully off before start-up, then close them gradually until the 85 mm stroke ends quietly under load. The cushion is variable air, not a brake - it softens impact but does not hold the piston, so use a rod lock or pilot check valve for loads that must stay in place.
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