
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X100SU is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 100mm 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.
Flat-ended and fuss-free, the MAC40X100SU is AirTAC's double-acting 40 mm mini cylinder with a variable air cushion at each end of the 100 mm stroke. Expect 628 N of push and 528 N of pull at 0.5 MPa, rising to 880 N and 739 N at 0.7 MPa; the theoretical top figure is 128.1 kgf. The U flat-end back cover bolts straight to fixed machine plates, no adapter bracket needed.
Inside, a stainless round barrel is rolled and riveted onto aluminium covers with a stainless block, forming one sealed body. The 16 mm rod is hard-chrome plated carbon steel, so damp workshops and periodic hose-down are non-events. A magnet comes built in as standard, so CMSG, DMSG and EMSG switches fit without a special piston. For sizing, count on roughly 377 N of useful work at 0.5 MPa, or about 32 kg of vertical lift with a 2:1 margin.
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X100SU |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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.
| 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.
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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.
Pressing lids onto 500 g tubs calls for a steady 628 N push; the adjustable cushion stops the ram cracking the covers at the bottom of the stroke.
A stainless barrel and hard-chrome 16 mm rod survive the damp, resinous dust around a sawmill belt that corrodes painted-steel mini cylinders.
Opening a slide gate on a grain blender - the U flat-end cover bolts flat to the gate frame and DMSG switches confirm open and closed positions.
Sizing sideways: the 32 mm bore reaches 402 N push at 0.5 MPa and the 50 mm bore 981 N, framing where this 40 mm unit lands. Supply pressure runs 0.15-1.0 MPa (22-145 psi) with proof at 1.5 MPa (215 psi). If the load must stay put during a power cut, add a rod lock or pilot check valve - the MAC will coast on trapped air otherwise. Mount the U flat-end cover directly to a plate, or add an FA flange, LB foot or SDB pivot bracket; the standard magnet already supports CMSG, DMSG and EMSG switches.
Quick checklist
At 0.5 MPa you get 628 N on extend and 528 N on retract; at 0.7 MPa that becomes 880 N and 739 N. The 1.0 MPa theoretical peak is 128.1 kgf. Operating range is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure.
Both stroke ends carry a variable air cushion. On first start, back the needle screws fully off, run the cylinder anywhere in its 30-800 mm/s band, then close the screws gradually until end-of-stroke shock disappears. Note that the cushion only slows the piston - it never locks it.
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