Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X80-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X80-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 80mm 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
- Stroke80 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 MACJ40X80-40S
Forty millimetres of bore, eighty of stroke, and a 40 mm band in which the extend stroke can be shortened at will: that is the MACJ40X80-40S brief. Double-acting with variable air cushions at both ends, it turns 0.5 MPa into 628 N of push and 528 N of pull inside a 0.15-1.0 MPa (22-145 psi) operating band, reaching 880 N at 0.7 MPa.
The riveted stainless round body and 16 mm hard-chrome rod handle humid plants and light washdown better than painted minis, and the factory-fitted magnet means CMSG, DMSG and EMSG switches bolt on without a special-order piston. Think in lifting terms and 628 N equals roughly 64 kg vertical, or about 32 kg once you halve it for a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X80-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X80-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 MACJ40X80-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| -40 | 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 MACJ40X80-40S Is Used
Lid press on dairy punnet trays
Halved rating gives about 32 kg of vertical force, enough to seat lids without cracking the film; stainless surfaces wipe clean between runs.
Slide gate under a parts hopper
Trim the 40 mm window so the gate opens exactly to the orifice and meters M6 fasteners without jamming.
Guard-door latch actuator on a press brake
Set latch travel with the stop screw and let the built-in magnet confirm full lock through a CMSG switch on the panel.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X80-40S the Right Cylinder?
Match the bore to the load: 402 N push at 0.5 MPa from a 32 mm cylinder suits light duty, 981 N from a 50 mm bore covers heavy pressing, and this 40 mm unit's 628 N lands between them. Speeds of 30-800 mm/s plus the dual cushions let you tune each cycle. Choose FA flange or LB foot fixing, I or Y rod knuckle where the load articulates. Do not treat the stop screw as a brake: it sets extend length, and on air loss the piston can still coast to that stop.
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 MACJ40X80-40S FAQ
Push 628 N and pull 528 N at 0.5 MPa; push 880 N and pull 739 N at 0.7 MPa; theoretical maximum 128 kgf at 1.0 MPa. The 80 mm stroke is field-trimmable over a 40 mm window, the rod is 16 mm hard chrome, and the port size is 1/8".
FA flange and LB foot brackets are standard catalogue items, and I or Y rod knuckles suit pivoting loads; the adjustable-stroke build does not use the SDB or a back-cover code. Whichever you pick, the stainless barrel and built-in magnet stay identical.
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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