
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X70-50S 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.
One cylinder, several fixture depths: with the 50 mm window on the MAJ16X70-50S you back the external stop screw out as tooling changes and the extend stroke shortens to suit, no hardware swap needed. Air still works the rod in both directions, and at 0.5 MPa the 16 mm bore delivers 100.5 N forward and 86.4 N back, rising to 140.7 N forward at 0.7 MPa.
Aluminium covers are rolled and riveted onto the stainless tube, so the body stays slim and sealed, and it tolerates damp or lightly washed-down surroundings far better than painted minis. The piston magnet is fitted as standard, so CMSG, DMSG or EMSG switches snap straight on. Budget near 60 N for the actual job at 0.5 MPa; that leaves about 5 kg of vertical lift once a 2:1 margin is held.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X70-50S |
|---|---|
| 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. |
| -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.
Swaps guide rail positions between two carton widths on a packaging conveyor; the 50 mm window absorbs inexact rail drilling without rework.
Rises to stop migrating trays ahead of a case packer, then retracts 70 mm clear of the flow so the next batch runs straight through.
Clamps an aluminium casting sideways in a milling jig, where 100.5 N at 0.5 MPa holds light parts firmly without deforming them.
With only 100.5 N at 0.5 MPa on offer, check the next sizes before committing: MAJ20 gives 157.0 N and MAJ32 gives 402.2 N at the same pressure if the duty grows. The adjuster is an extend-side mechanical stop, not a load lock - expect drift if pressure drops, and add an external check valve or clamp where holding matters. Choose FA flange or LB foot mounting, add an I or Y knuckle on the rod, and note the magnet comes standard for CMSG, DMSG and EMSG switch drop-on.
Quick checklist
Expect 100.5 N on extend and 86.4 N on retract at 0.5 MPa; at 0.7 MPa the figures become 140.7 N and 120.9 N. Ceiling at 1.0 MPa theoretical is 20.5 kgf for this bore. Anything beyond 0.15-1.0 MPa (22-145 psi) or 30-800 mm/s is out of rating.
A magnet is built into the piston as standard equipment, not a paid option, so CMSG, DMSG or EMSG reed switches clamp straight onto the barrel and read end positions or mid zones. The adjuster stop itself is only a mechanical limit for the extend stroke and carries no sensing.
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.