
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X225-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø16mm bore and 225mm stroke, M5×0.8 air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
Trim flexibility is the selling point here: the extend stroke can be shortened by up to 20 mm with an external stop screw, while the 16 mm bore still pushes 100.5 N at 0.5 MPa (86.4 N return, 140.7 N push at 0.7 MPa, 20.5 kgf theoretical max). The adjustment is purely mechanical, so no extra valves are needed to set the cycle length.
AirTAC rolls the aluminium covers onto a stainless round barrel and hard-chrome plates the 6 mm rod, a combination that stands up to splash and humidity far better than painted mini cylinders. Because the magnet ships as standard, a DMSG switch snaps onto the barrel to signal end positions. As a rule of thumb, keep real work at or under about 60 N at 0.5 MPa - roughly six-tenths of the rating.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X225-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 225 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. |
| ×225 | Stroke length in mm. |
| -20 | 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.
Folds top flaps on bakery boxes where product heights vary; the 20 mm window absorbs changeover without re-piping the machine.
Pushes the bottom tray from a stack at 30-800 mm/s; 140.7 N at 0.7 MPa handles sticky trays while the stainless barrel tolerates washdown.
Confirms a connector crimp with a light 60 N class force at 0.5 MPa, giving a pass signal through an attached DMSG switch at the stop.
If 100.5 N at 0.5 MPa feels tight for the job, the next bore up (20 mm) reaches 157.0 N under the same pressure. Both sizes share the 1/8-inch class plumbing style, but bore 16 alone takes an M5x08 port - check before ordering fittings. The adjuster works as an extension stop, not a lock: with air lost the rod can drift, so never rely on it to park a load.
Mount with an LB foot or FA flange and add an I knuckle where the coupling needs play. Temperature span is -20 to +70 C, and the built-in magnet pairs with CMSG, DMSG or EMSG switches straight from stock.
Quick checklist
Push at 0.5 MPa is 100.5 N and pull is 86.4 N; at 0.7 MPa push reaches 140.7 N and pull 120.9 N; the theoretical maximum is 20.5 kgf at 1.0 MPa. Plan real loads at about 60 N at 0.5 MPa, and stay inside 0.15-1.0 MPa (22-145 psi) with 40 um filtered air.
No. Every MA-series cylinder, this one included, ships with a piston magnet already fitted, so CMSG, DMSG or EMSG switches mount on the barrel as standard accessories rather than a special-order option.
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Covers non-human-caused product damage.
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