
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X350-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø16mm bore and 350mm stroke, M5×0.8 air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A 350 mm reach makes the MAJ16X350-50S one of the longer MAJ builds, and since 350 mm exceeds the 300 mm standard catalogue stroke for a 16 mm bore, AirTAC produces it to order. It is double-acting: air drives the rod out and back, and an external stop screw trims the extend stroke anywhere within the ordered 50 mm window on site. Push output at 0.5 MPa is 100.5 N, which leaves roughly 60 N for real work once a sensible margin is kept.
The round barrel is stainless steel rolled onto aluminium covers with a stainless block, so the sealed body shrugs off splash and mild washdown far better than painted minis. A hard-chrome plated 6 mm rod runs in a two-way seal that stores its own grease, and fixed bumper pads soften both stroke ends - a deceleration pad, not an adjustable cushion. The magnet ships built in, so CMSG, DMSG or EMSG switches clip on without a special piston order.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X350-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 350 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. |
| ×350 | Stroke length in mm. |
| -50 | 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.
Sweeps rejects off a bottling lane in one long push; 100.5 N at 0.5 MPa is ample for empty PET bottles, and the 50 mm window lets the stop be re-set when the lane guide moves.
Slides light totes off the shelf edge with about 60 N of working push; the standard magnet and a CMSG switch confirm full retract before the next pick cycle.
The stainless barrel and chrome rod tolerate humid, occasionally washed plant air while the extend end is trimmed up to 50 mm to suit lane spacing.
Compare bores on 0.5 MPa force: this 16 mm barrel gives 100.5 N push and 86.4 N pull; if the job needs more, the 20 mm bore offers 157 N push and the 25 mm bore 245 N in the same MA family. There is no smaller MA bore. Plan on about 60 N of usable push rather than the full rating, and treat the stop screw as a mechanical end stop for the extend side only - with air lost the rod can still drift, so it is not a load lock.
A 6 mm rod spanning 350 mm is side-load sensitive: guide the load on an external slide or bushing instead of cantilevering it off the rod. Mount with the FA flange or LB foot, add an I or Y knuckle if the linkage calls for one, and use the standard-fit magnet with CMSG/DMSG/EMSG switches for position signals.
Quick checklist
At 0.5 MPa the 16 mm bore pushes 100.5 N and pulls 86.4 N. At 0.7 MPa those figures rise to 140.7 N push and 120.9 N pull, and the theoretical maximum is 20.5 kgf at 1.0 MPa. Porting is M5x0.8, the rod is 6 mm with an M6x1.0 male thread, and speed runs 30-800 mm/s on a 0.15-1.0 MPa (22-145 psi) supply.
Yes. The MAJ barrel is stainless steel with the aluminium covers riveted on, and the 6 mm rod is hard-chrome plated carbon steel, so splash, washdown mist and outdoor dew attack it far more slowly than a painted mini cylinder. Fixed bumper pads cushion each stroke end as well.
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