
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X500-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø16mm bore and 500mm stroke, M5×0.8 air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
With a 50 mm trim range over a 500 mm stroke, this MAJ covers product-size changes without swapping actuators. Air drives the rod both ways, and at 0.5 MPa the extend stroke generates 100.5 N - plan on close to 60 N of usable work after derating, enough to shift light slides and gates.
The riveted round body pairs a stainless barrel with a hard-chrome carbon-steel rod, a combination that stays clean in washdown corners where painted minis rust. A fixed bumper pad decelerates the piston at each end of travel; it is not an adjustable air cushion, which belongs to the MACJ family instead.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X500-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 500 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. |
| ×500 | 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.
Opens and closes machine guard doors up to half a metre wide, the 50 mm trim absorbing door-frame tolerance from batch to batch.
Advances lightweight trays between stations, the bumper pad damping each stop so parts do not bounce off the locator.
Positions small sample trays under analysers; the stainless tube wipes clean and resists splashes common near wash stations.
If 100.5 N at 0.5 MPa is more than the job needs there is no smaller bore in the range; if it falls short, step to bore 20 for 157.0 N. The 50 mm window is fixed at order time, and the external stop shortens the extend stroke only - on air loss the rod still drifts, so solve position holding with valves elsewhere in the circuit.
FA flange and LB foot mountings cover fixed frames, while I and Y knuckles suit pivoting links. Because the 6 mm rod spans 500 mm, keep side loads off it and guide the load with external rails.
Quick checklist
Running at 0.5 MPa it pushes 100.5 N and pulls 86.4 N. Raise pressure to 0.7 MPa and it pushes 140.7 N or pulls 120.9 N; the theoretical peak at 1.0 MPa is 20.5 kgf. Supply air filtered to 40 um within 0.15-1.0 MPa (22-145 psi).
Yes, every MA-series piston ships with a magnet built in as standard, so CMSG, DMSG and EMSG switches mount on the barrel without any special-order piston - handy for confirming door-open or tray-present states.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.