
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X60-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 60mm stroke, 1/8" 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.
The widest trim in this family, a 50 mm window, makes the MACJ40X60-50S the pick when one cylinder must serve several product variants on the same fixture. It is double-acting with variable air cushion at each end, and its stainless round barrel with a 20 um hard-chrome plated rod stands up to damp, dusty or lightly washed environments. Push at 0.5 MPa is 628 N, which is 64 kgf; halving that gives a 32 kg vertical lift you can quote with a safety margin, or about 377 N of continuous working force.
The built-in magnet is standard, so CMSG / DMSG / EMSG switches mount immediately for position feedback. 40 um filtered air, 0.15-1.0 MPa (22-145 psi) and -20 to +70 C keep installation simple. The extend stop shortens travel only and never acts as a load lock when pressure fails.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X60-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 60 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 500 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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). |
|---|---|
| 40 | Bore size in mm. |
| ×60 | 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.
One stopper cylinder serves tall and short cartons on a sorter by re-trimming the 50 mm window between SKUs; cushions keep every stop silent.
The extend stop positions a go/no-go gauge head above aluminium castings; EMSG on the standard magnet confirms the gauge has returned home.
Air at 0.5 MPa closes a soft-jaw vise on brass fittings with about 628 N, and the magnet drives a CMSG switch for cycle-complete signalling.
Sizing against neighbours: the 32 mm bore (402.2 N push) suits lighter gates, the 40 mm bore here gives 628.3 N push and 527.8 N pull at 0.5 MPa, and the 50 mm bore reaches 981.3 N when forces climb. Keep continuous loads around 60 percent of push, near 377 N, for long seal life.
FA flange or LB foot mount, plus I or Y knuckles for swinging links, cover most frame needs. At 60 mm stroke with a 16 mm rod, buckling and bending are non-issues at these pressures, but still avoid applying side loads to the rod directly. Since the stop is a position setter, add a locking valve if a suspended load must stay put on air loss.
Quick checklist
628.3 N push and 527.8 N pull at 0.5 MPa; 879.6 N push and 738.9 N pull at 0.7 MPa; peak 128.1 kgf theoretical. Bore 40 mm, rod 16 mm, 1/8" air ports, 60 mm stroke, 50 mm extend trim window, dual-end air cushion, 30-800 mm/s, 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi).
None cost extra: the piston magnet is fitted as standard on every MACJ. CMSG, DMSG and EMSG switches mount directly on the stainless barrel for end-of-stroke detection, no special-order piston required.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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