Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-75S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-75S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 100mm 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.
- BoreØ40 mm
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM12×1.25
- 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 MACJ40X100-75S
A generous 75 mm trim window makes the MACJ40X100-75S the most flexible bore 40 unit in the range: the extend stroke can be wound down anywhere between 25 and 100 mm at the stop screw, while the variable air cushion at both ends soaks up end-of-stroke shock. Push force is 628.3 N at 0.5 MPa with 527.8 N on the return stroke, across a 0.15-1.0 MPa (22-145 psi) supply at speeds of 30-800 mm/s.
The body is a riveted round barrel of stainless steel with a hard-chrome plated 16 mm carbon-steel rod, so damp washdown corners and outdoor panels are fair game compared with painted minis. Every unit leaves the factory with the piston magnet built in, so CMSG, DMSG or EMSG switches snap on without a special order. Running the full 628.3 N rating all day is poor practice: size the job to roughly 377 N of usable push, or expect about 32 kg lifted vertically at a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-75S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-75S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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.
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-75S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-75S Is Used
Bottling line pick-and-place
A gantry-mounted MACJ40X100-75S lifts glass carafes of up to about 32 kg off a filler conveyor; the 75 mm window lets line staff re-set the drop height between bottle formats without swapping cylinders.
Weld-cell fixture clamping
Automotive bracket fixtures clamp against a robot welding table, trimmed to 60 mm for the jig, with about 377 N of dependable working force at 0.5 MPa and cushions damping each closure.
Conveyor reject pusher
A reject arm kicks plastic offcuts sideways off a packaging conveyor at 400 mm/s, with the variable cushions keeping the stroke finish quiet across a 10-hour shift.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-75S the Right Cylinder?
Check the force ladder before committing: bore 25 tops out at 245.3 N push at 0.5 MPa and bore 50 reaches 981.3 N, so 40 mm sits comfortably between light clamping and heavier pressing. The stop screw shortens the extend stroke only - it is a mechanical end stop, not a mid-stroke lock, so the rod will still drift if air is lost. Mount it FA flange or LB foot, add I or Y rod knuckles where the load pivots, and spec PT, G or NPT threads on the 1/8" ports of this bore.
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 MACJ40X100-75S FAQ
At 0.5 MPa the bore 40 barrel pushes 628.3 N and pulls 527.8 N. Raise supply to 0.7 MPa and those become 879.6 N push and 738.9 N pull, with a theoretical peak of 128.1 kgf at 1.0 MPa. Working pressure spans 0.15-1.0 MPa (22-145 psi) and speed runs 30-800 mm/s.
The -75 suffix means the extend stroke can be shortened anywhere in a 75 mm window, down to 25 mm on this model, by winding out the external stop screw. It shortens the extend stroke only and acts as a mechanical end stop, not a load lock, so the rod can still move if air pressure is lost. The variable air cushion at both ends stays active at any trim setting.
Authorized Export Seller
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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