
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X125-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø16mm bore and 125mm stroke, M5×0.8 air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A 50 mm trim window makes the MAJ16X125-50S a flexible choice for light automation: order 125 mm of stroke and shorten the extend travel anywhere within 50 mm using the external stop screw. The 16 mm bore produces 100.5 N forward and 86.4 N back at 0.5 MPa. Supply pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s.
Because the magnet is fitted as standard, CMSG, DMSG and EMSG switches snap onto the stainless barrel for end-of-travel signals with no special piston. The hard-chrome plated 6 mm rod resists scoring in dusty cells. Match real loads to about 60 N of usable force at 0.5 MPa; vertically that is around 5 kg of lift once you keep a 2:1 margin.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X125-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 125 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. |
| ×125 | 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.
Ejects sample trays from an autosampler in a water-analysis lab, where the stainless body tolerates frequent wipe-downs.
Extends a suction pick head 125 mm across a PCB tray; the 50 mm window lets technicians retune reach after tray changes.
Drops a presence flag into a forklift charging bay so the charger only starts once the truck is parked in position.
No bore sits below 16 mm in the MA range, so treat this as the entry size and step up to 157.0 N (bore 20) or 245.3 N (bore 25) when the job grows. Porting is M5x0.8 and the male rod thread is M6x1.0. Mount via FA flange, LB foot, or an I / Y knuckle. A long 125 mm stroke on a 6 mm rod dislikes side loads, so guide the part externally to protect the rod and seals.
Quick checklist
At 0.5 MPa the MAJ16X125-50S pushes 100.5 N and pulls 86.4 N. At 0.7 MPa those figures rise to 140.7 N and 120.9 N, and the theoretical maximum at 1.0 MPa is 20.5 kgf.
No. The external screw only sets where the extend stroke ends; it is a mechanical end stop, not a brake. If air pressure is lost the rod can move, so use a separate mechanical latch where load holding matters.
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