Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCASDB
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCASDB 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 MAC40X85SCASDB
Where the driven arm swings, the MAC40X85SCASDB comes ready: a CA pivot back cover plus an SDB pivot bracket in one order code, with 85 mm of stroke on a 40 mm bore. Air on both sides of the piston makes it double acting, and variable cushions at each end soak up the shock of faster cycles or heavier heads. The barrel is stainless steel, rolled onto the aluminium covers for a washdown-friendly sealed shell.
Force-wise, this bore delivers 628.3 N at 0.5 MPa (527.8 N on retraction). Keep steady applications near 377 N of that figure; on a vertical axis it translates to about 32 kg lifted with a 2:1 margin, or roughly 64 kg at the theoretical maximum. A piston magnet is fitted as standard, so CMSG, DMSG or EMSG sensors read position out of the box.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCASDB Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCASDB |
|---|---|
| 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 MAC40X85SCASDB
| 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 MAC40X85SCASDB Is Used
Roaster hopper gate
Tilts the feed gate on a coffee-roaster hopper, using roughly 377 N of practical force to break loose a column of beans.
Sorting elevator lever
Drives a lever linkage that steps parts up a sorting elevator; the SDB pivot tracks the linkage's arc without binding.
Wire spool tensioner
Keeps a tension arm loaded against wire on a winding spool, where the cushion smooths each arm reversal at the end of its 85 mm arc.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X85SCASDB the Right Cylinder?
Around this 40 mm bore the family spans 402 N (32 mm) to 981 N (50 mm) at 0.5 MPa, so 628 N places it squarely in mid-duty territory. Losing air means losing position - nothing in the cylinder brakes the piston - so fit a pilot check valve or rod lock for suspended loads. The SDB bracket plus CA pivot cover handles swinging motion without improvising hardware, and the standard magnet feeds CMSG, DMSG or EMSG switches. Guard the 16 mm rod against side thrust over the 85 mm travel, or guide the load on its own rails.
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 MAC40X85SCASDB FAQ
At 0.5 MPa: 628.3 N extend, 527.8 N retract. At 0.7 MPa: 879.6 N extend, 738.9 N retract. Theoretical ceiling is 128.1 kgf at 1.0 MPa. Port size is 1/8" (set by the 40 mm bore), rod is 16 mm with an M12x1.25 thread, and proof pressure is 1.5 MPa (215 psi).
It is a variable air cushion at both ends - the needle screws bleed trapped air to decelerate the piston smoothly, so faster speeds or heavier heads arrive without slamming the covers. It is not a brake: when supply air is gone the piston coasts freely, so a rod lock or pilot check valve does the holding job.
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