
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X160-75S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 160mm 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.
Wide latitude on one catalog number: order the MACJ40X160-75S with 75 mm of trim range and any extend stroke from 85 mm to the full 160 mm is available by turning the external stop screw. The 40 mm bore pushes 628 N and pulls 528 N at 0.5 MPa (880 N and 739 N at 0.7 MPa), enough to lift about 32 kg vertically with a 2:1 margin.
Both ends carry a variable air cushion, so heavier loads can be decelerated gently near 800 mm/s rather than slamming the covers. A stainless barrel, hard-chrome rod and riveted aluminium heads give the round body its sealed, washdown-friendly character; the magnet is standard, ready for CMSG, DMSG or EMSG switches.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X160-75S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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. |
| ×160 | Stroke length in mm. |
| -75 | 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.
A nail-head setting ram switches between pallet patterns by re-trimming the stroke anywhere in the 85-160 mm spread, no new brackets required.
Lifting roughly 32 kg of gate and linkage, the cylinder meters discharge from a small powder hopper and seats the gate with a cushioned close.
A fatigue-test fixture uses the full window to vary deflection between specimens, with an EMSG switch logging each end of travel.
At 628 N of push at 0.5 MPa this bore doubles the 32 mm size (402 N) and sits below the 50 mm bore (981 N) for heavier pressing work. The 75 mm window is the widest trim range in the series, ideal when fixture variants differ a lot. Note the adjuster shortens extend travel only and never acts as a mid-stroke lock; for suspended loads use external restraint. FA flange or LB foot plus optional I or Y knuckles cover most frame layouts.
Quick checklist
At 0.5 MPa: 628 N extend force, 528 N retract. At 0.7 MPa: 880 N extend, 739 N retract. Maximum theoretical output is 128.1 kgf at 1.0 MPa. Operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s.
The barrel is stainless steel and the 16 mm rod is hard-chrome plated to 20 um, a pairing that resists corrosion far better than painted mini cylinders. Add the standard magnet with a CMSG switch if you need position confirmation in the same wet zone.
Genuine AirTAC parts produced by AirTAC factory.
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