
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X75-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 75mm 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.
A 30 mm trimming band on the extend stroke makes this 32 mm bore unit easy to set up on the machine: wind the stop screw in and the rod bottoms earlier inside that band, while the variable cushion at each end soaks up residual shock. Air on both faces gives 402 N forward and 346 N back at 0.5 MPa.
Instead of a coated shell, the MA range rolls a stainless tube, aluminium covers and a steel block into one riveted body, with a 20 um hard-chrome finish on the 12 mm rod. In splash zones near food washdown or in outdoor cabinets that build shrugs off corrosion far better than painted minis. The magnet comes fitted, so CMSG / DMSG / EMSG switches just snap on. Keep in mind the adjuster is an end stop, not a brake - release the air and the rod can move.
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X75-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 75 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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). |
|---|---|
| 32 | Bore size in mm. |
| ×75 | 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.
Knocks leaners off a case conveyor at speeds up to 800 mm/s; 484 N pull retracts the blade clear every cycle.
Cycles test coupons with the 30 mm window set to a shorter sweep; dual cushioning protects the load cell.
Spurs 15 kg totes onto a cross-belt lane, staying inside the 20 kg vertical margin the rod carries with a 2:1 safety factor.
Compare against neighbors: bore 25 offers 245 N at 0.5 MPa and bore 40 reaches 628 N, so this unit's 402 N fits loads in between. For vertical duty the rod could hoist about 41 kg on air alone; halving that gives a 2:1 margin, so treat 20 kg as your practical lift figure. FA flange and LB foot are the standard mounts, with I and Y knuckles for pivoting links. Port size is 1/8 inch whatever thread option you order (PT, G or NPT).
Quick checklist
Bore 32: 402 N push and 346 N pull at 0.5 MPa, 563 N push and 484 N pull at 0.7 MPa, with an 82 kgf theoretical peak at 1.0 MPa. Keep steady loads near 241 N for a comfortable margin.
The stop screw only shortens the extend stroke, within the ordered 30 mm band - it never adds travel past 75 mm. It works as a mechanical end stop, so with air removed the piston can drift; add a valve or external stop if you need the rod held.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
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