
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X450-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø16mm bore and 450mm stroke, M5×0.8 air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A 40 mm window on the stop screw gives the MAJ16X450-40S several discrete working positions inside a 450 mm travel, set with a screwdriver on the machine. This is a double-acting round-body mini cylinder: stainless barrel, hard-chromed 6 mm carbon-steel rod, aluminium covers riveted in place. Push force at 0.5 MPa is 100.5 N - in practice, plan around 60 N of real work, or about 5 kg of vertical lift at a 2:1 margin.
Because bore 16 tops out at 300 mm standard, the 450 mm stroke is a made-to-order build. The fixed anti-impact pad at each end decelerates the piston without the tuning an adjustable cushion needs, and since every MA carries a built-in magnet, CMSG / DMSG / EMSG switches simply clip on. The rolled stainless body also resists the mild corrosion that kills painted minis near coolants or outdoors.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X450-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 450 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 | Fixed anti-impact bumper pads |
| Max standard stroke | Up to 300 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 | 101 N | 86 N |
| 0.7 MPa | 141 N | 121 N |
| Max (@1.0 MPa) | 21 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×450 | Stroke length in mm. |
| -40 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -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.
Trim the extend stroke across the 40 mm band to halt totes at different shelf heights along the 450 mm column.
Around 5 kg of vertical lift covers hinged acrylic guards, and the stainless barrel copes with daily rinse-down.
At 0.7 MPa the push rises to 140.7 N, enough to seat light parts into a nest before the press cycle starts.
Step up only if you must: MAJ20 reaches 157 N push at 0.5 MPa and MAJ25 245.3 N, against 100.5 N here - for light gates and diverters bore 16 keeps air bills low. Pull force is 86.4 N, which matters if the return stroke does the work. The stop screw trims extend only and holds nothing mid-stroke; do not rely on it to lock a suspended load if air fails.
FA flange or LB foot mounting both suit a long horizontal run like this; an I or Y knuckle on the rod end absorbs small misalignment. Ports are M5x0.8 (PT blank, G or NPT thread options). Treat the 450 mm, 6 mm rod as a slender column - support or guide any off-axis load.
Quick checklist
Push at 0.5 MPa is 100.5 N and pull 86.4 N; at 0.7 MPa you get 140.7 N push and 120.9 N pull, peaking at a theoretical 20.5 kgf at 1.0 MPa. Porting is M5x0.8 with an M6x1.0 male rod thread, operating on 0.15-1.0 MPa (22-145 psi) clean dry air at 30-800 mm/s.
No - the magnet is built in as standard on every MA cylinder, so CMSG, DMSG or EMSG switches mount straight onto the stainless barrel with no special-order piston. The bumper pads at the stroke ends are fixed: they soften impact but are not adjustable air cushions.
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