Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCASDB
The AirTAC Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCASDB is a genuine double acting + cushion standard round-body mini air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 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 MAC40X70SCASDB
With 628 N of push and 528 N of pull at 0.5 MPa, this 40 mm bore MAC handles linkage and lever duties that a 25 mm mini (245 N) cannot touch. It is double acting - air extends and retracts the rod - and the variable air cushion at both ends tunes itself so fast 70 mm cycles land soft instead of cracking the covers.
The SDB pivot bracket in the code lets the body swing with your linkage without fabricating a mount, and the riveted stainless round barrel with hard-chrome 16 mm rod shrugs off the damp and washdown that wreck painted bodies. On the vertical side, 628 N at 0.5 MPa lifts about 64 kg; keep a 2:1 margin and it comfortably raises 32 kg loads. The magnet ships built in, so CMSG, DMSG or EMSG switches drop on with no special-order piston.
Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCASDB Technical Specifications
| Model | Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCASDB |
|---|---|
| Series | MAC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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 MAC40X70SCASDB
| MAC | Standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 MAC40X70SCASDB Is Used
Carton infeed pusher
Mounted on its SDB bracket, the cylinder drives a pivoting pusher arm that diverts cartons on a corrugated case infeed; 628 N at 0.5 MPa moves a loaded stack while the cushion kills the end-of-stroke bang.
Film web tension lever
A scissor-link roller on a shrink-wrap machine takes its upforce from this bore - about 64 kg of vertical capability at 0.5 MPa, or 32 kg with a 2:1 safety margin, holding web tension through the seal cycle.
Grain chute dump actuator
The pivot bracket lets the body track a tipping discharge chute on a small grain hopper, and the stainless barrel plus chrome rod cope with dusty, occasionally washed-down agricultural sheds.
Is the Airtac MAC Stainless Steel Mini Air Cylinder MAC40X70SCASDB the Right Cylinder?
Compare against the 32 mm bore (402 N at 0.5 MPa) for lighter levers or the 50 mm bore (981 N) for heavy gates. The SDB bracket pairs with the CA pivot eye for full articulation; switch to an FA flange or LB foot if the mount is fixed. Remember this standard MAC cannot hold position - centre the valve and the piston coasts - so specify a rod lock or pilot check valve where a load must stay raised. Ports are 1/8" with an M12x1.25 rod thread; 0.15-1.0 MPa (22-145 psi) pressure, 30-800 mm/s speed.
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 MAC40X70SCASDB FAQ
Rated output at 0.5 MPa is 628 N push and 528 N pull; at 0.7 MPa it reaches 880 N push and 739 N pull, and the theoretical maximum is 128 kgf at 1.0 MPa. Bore is 40 mm, rod 16 mm with M12x1.25 thread, ports 1/8", pressure 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
No - the magnet is built into the piston as standard across the whole MA series, so CMSG, DMSG or EMSG reed switches clip on without ordering a special piston. Use them to signal end-of-stroke on the 70 mm travel and interlock the machine cycle.
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