Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 125mm 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
- Stroke125 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 MACJ32X125-20S
With a 32 mm bore and a 125 mm stroke, the MACJ32X125-20S is a double-acting round-body mini cylinder whose extend stroke can be dialed anywhere between 105 and 125 mm from the external stop screw. A variable air cushion at each end absorbs the piston as it lands, so faster cycles or heavier carriers do not hammer the aluminium covers. At 0.5 MPa (72 psi) the bore delivers 402 N on the extend side, which puts this unit in the class of small clamps, gates and lifters on packaging and assembly machines.
Build quality suits damp and washdown-prone corners: the stainless-steel barrel resists the corrosion that quickly marks painted minis, while the hard-chrome plated 12 mm rod keeps sealing surfaces smooth. For sizing, keep continuous work near 241 N, about 60% of the 402 N push at 0.5 MPa; halved again, that is roughly 20 kg lifted vertically with a 2:1 margin. The magnet is built in as standard, so CMSG, DMSG or EMSG switches clip on without a special piston, and FA flange or LB foot mounts bolt straight onto the riveted body.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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 MACJ32X125-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -20 | 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 MACJ32X125-20S Is Used
Gate diverter on a bottling line
The 105-125 mm trim matches lane-change gates where container pitch varies, and the 402 N push at 0.5 MPa shifts a full row of bottles without a larger bore.
Carton ejection from a case packer
Adjust the extend stroke to clear each carton size, while the end cushion keeps the pusher from banging the stop at 800 mm/s.
Sample lift in a lab automation deck
About 20 kg vertical capacity with a 2:1 margin covers loaded microplate stacks, and the stainless barrel tolerates frequent wipe-downs.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X125-20S the Right Cylinder?
Next to a 25 mm MACJ (245 N push at 0.5 MPa), this 32 mm unit gives about 64% more force; stepping up to a 40 mm bore (628 N) suits heavier clamping. The -20 window means the extend stroke shortens from 125 down to 105 mm only - it will not travel past 125, and the stop screw is not a mid-stroke lock, so the rod can still drift off position if air is lost. Choose FA flange or LB foot mounting plus I or Y rod knuckles to match the linkage; on a 125 mm span, guide side loads externally so the 12 mm rod carries thrust alone.
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 MACJ32X125-20S FAQ
At 0.5 MPa (72 psi) it pushes 402 N and pulls 345.6 N; at 0.7 MPa (101 psi) those figures rise to 563 N and 483.8 N. The theoretical ceiling is 82 kgf at 1.0 MPa. For continuous duty, plan around 241 N of usable push at 0.5 MPa.
No. Every MACJ ships with the magnet built in, so CMSG, DMSG and EMSG magnetic switches mount directly on the 32 mm stainless barrel and detect stroke position without any factory option.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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