Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X140-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X140-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 140mm 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.
- BoreØ32 mm
- Stroke140 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X140-30S
At 0.7 MPa the MACJ32X140-30S puts 563 N on the push stroke, climbing to a theoretical 82 kgf at 1.0 MPa. The extend stroke is factory-set at 140 mm and the stop screw lets you shorten it by up to 30 mm without touching the air logic; a variable cushion at each end absorbs whatever energy is left. Air supply of 0.15-1.0 MPa (22-145 psi) and speeds from 30-800 mm/s cover most machine frames.
Construction is the classic MA recipe: a stainless round barrel with covers and block rolled on, sealing the 12 mm hard-chrome rod against washdown and light corrosion. In practice the 402 N push at 0.5 MPa translates to about 241 N of honest working force once you keep a 60 percent margin - roughly a 20 kg vertical lift held at half rating. Sensor-ready by default, the magnet that trips CMSG, DMSG and EMSG switches is already in the piston.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X140-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X140-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 140 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.
Theoretical Output Force (Ø32mm)
| 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.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X140-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×140 | 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.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X140-30S Is Used
Lift-and-locate pin in an automotive weld jig
Raising a locating pin before a robot loads a bracket; the 30 mm window trims pin height per fixture variant without new tooling.
Straight clamp on a CNC fixture plate
Clamping an aluminium housing before face milling; 563 N at 0.7 MPa holds the part while both cushions cut clamp bounce.
Divertor pushing cartons at a sorting junction
Nudging boxes from lane A into lane B; cushioned ends keep the 140 mm travel quiet at full line speed.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X140-30S the Right Cylinder?
Between bores: drop to 25 mm (245 N push at 0.5 MPa) only for light kicker duty; go to 40 mm (628 N push at 0.5 MPa) if the load or cycle rate climbs. Air connects via the 1/8" port, and the FA flange or LB foot carries the body while I and Y knuckles suit pivoting rods. The 30 mm trim is mechanical and sets where the rod stops when extending - it is not a brake, so an unpowered piston can still be displaced. Over a 140 mm travel the slim rod should not see side loads; guide them externally.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X140-30S FAQ
At 0.5 MPa, 402 N extend and 346 N retract; at 0.7 MPa, 563 N and 484 N; at a full 1.0 MPa the theoretical maximum is 82 kgf. Operating range is 0.15-1.0 MPa (22-145 psi) with speeds of 30-800 mm/s.
The body is a stainless-steel tube with the aluminium covers riveted on in a rolling-packed joint - no paint to chip and no external fasteners to work loose - while the rod carries a 20 um hard-chrome plate that resists rust in damp plants. That combination suits food handling and outdoor cells where plain steel minis corrode.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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