
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X150-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø16mm bore and 150mm stroke, M5×0.8 air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
Over a 40 mm window the extend stroke of this MACJ16X150-40S can be shortened at the machine without ordering a new cylinder - the screw stop sets where the 150 mm travel ends. It is double-acting with a variable cushion at each end and a 30-800 mm/s speed band, running on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi). The 16 mm bore delivers 100.5 N forward and 86.4 N back at 0.5 MPa.
Build quality is where this mini earns its keep: a stainless round tube riveted to aluminium covers, with a hard-chrome plated rod that keeps sliding wear low in damp or dusty shops. Halve the rated push for margin and you can lift about 5 kg vertically - enough for small chucks, caps or sensor fixtures. Every unit ships magnet-on, ready for EMSG reed or DMSG Hall-effect switches.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ16X150-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 150 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| 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 | Variable air cushion, both ends |
| 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.
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 16 | Bore size in mm. |
| ×150 | Stroke length in mm. |
| -40 | 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 small carton tabs on a cosmetic box line; the 40 mm trim window matches different carton depths and the two-end cushion stops tab hammering at line speed.
Swings a light reject gate on a snack-food conveyor; the stainless barrel handles routine hose-down and the 86.4 N pull returns the gate promptly between products.
Clamps thin brackets in a TIG weld jig where 60 N of practical force is ample; the hard-chrome rod resists staining between wipe-downs in coolant-misted shops.
If 100.5 N at 0.5 MPa is not enough for the job, the next MA size up, the 20 mm bore, reaches 157.0 N, and the 25 mm bore 245.3 N - both at the same supply. Proof pressure is 1.5 MPa (215 psi), so brief spikes are handled. Porting is M5x0.8 on this bore size; FA flange and LB foot plates, plus I and Y knuckles, cover most fixturing.
The stop screw is a position setter, not a holding brake: without air the rod is free to move, so clamp loads elsewhere where hold matters. On a 150 mm stroke with a 6 mm rod, keep thrust in line with the rod axis and support side loads externally; the built-in magnet pairs with CMSG/DMSG/EMSG switches for end-of-travel confirmation.
Quick checklist
Full set at the 16 mm bore: push 100.5 N and pull 86.4 N at 0.5 MPa; push 140.7 N and pull 120.9 N at 0.7 MPa; 20.5 kgf theoretical maximum at 1.0 MPa. Design around roughly 60 N of usable push at the lower pressure for long seal life.
The barrel is stainless steel with rolled aluminium covers, unlike painted-steel minis that chip in wet areas. The 6 mm rod is hard-chrome plated for wear, the magnet is included as standard for CMSG/DMSG/EMSG sensing, and both ends have a variable cushion you can tune with a screwdriver.
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.
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