
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X70-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø16mm bore and 70mm stroke, M5×0.8 air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
With the widest trim available in the -NN range for this bore, the MAJ16X70-30S gives a 30 mm extend window you set with the external stop screw - adjust it on site without removing the cylinder. Rated 100.5 N push and 86.4 N pull at 0.5 MPa, rising to 140.7 N at 0.7 MPa.
The riveted stainless round barrel and 20 um hard-chrome rod take periodic hose-down in damp workshops far better than painted-aluminium minis, which is why food benches and outdoor gates keep choosing this format. Set the working budget near 60 N (0.6 of the rated push) for consistent cycling, and lean on the fixed anti-impact pad to soften end-of-stroke shock - it decelerates only, it is not an adjustable air cushion.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X70-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 70 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. |
| ×70 | Stroke length in mm. |
| -30 | 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.
The stainless barrel survives daily hose-down on a dairy packing lane while the trim screw sets exact gate travel.
On a light pick arm, the 30 mm window lets technicians tune gripper open travel to the part size without new tooling.
About 60 N of usable push at 0.5 MPa seats a detent pin on a small rotary indexing table, cycle after cycle.
Choose bore 16 when loads stay light; if you need roughly 157.0 N at 0.5 MPa instead of 100.5 N, the 20 mm bore is the same-format upgrade. The 30 mm window only shortens the extend stroke, and the stop is a mechanical end stop, so hanging or falling loads still need external locking when air fails. Mount via FA flange or LB foot, add an I or Y knuckle on the 6 mm rod, and clip a CMSG switch over the standard magnet. Supply 0.15-1.0 MPa (22-145 psi); stroke speed 30-800 mm/s.
Quick checklist
At 0.5 MPa: 100.5 N push and 86.4 N pull. At 0.7 MPa: 140.7 N push and 120.9 N pull. Maximum theoretical output is 20.5 kgf at 1.0 MPa. Bore 16 uses M5x0.8 ports, a 6 mm rod and M6x1.0 male thread.
The pads are fixed: they absorb the last bit of travel to soften impact but cannot be tuned. Adjustable air cushioning belongs to the MACJ family, while the MAJ stop screw only trims the extend stroke within the 30 mm window.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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