Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X150-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X150-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 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 MACJ40X150-40S
Every MACJ40X150-40S ships with a 40 mm trim window, letting maintenance crews shorten the extend stroke within 40 mm of travel as tooling changes. At 0.5 MPa the 40 mm bore generates 628.3 N push and 527.8 N pull; at 0.7 MPa it reaches about 880 N and 739 N, with a theoretical peak of 128.1 kgf at 1.0 MPa. A 2:1 margin on the lift figure means roughly 32 kg can be raised vertically with confidence.
Because the barrel is stainless steel and the rod hard-chrome plated, this riveted round-body mini tolerates washdown and humidity that would pit painted competitors. Both ends carry a variable air cushion to tame end-of-stroke shock at speeds up to 800 mm/s across a 0.15-1.0 MPa (22-145 psi) supply, and the built-in magnet works with CMSG, DMSG and EMSG reed switches out of the box.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X150-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X150-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MACJ40X150-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 MACJ40X150-40S Is Used
Test-rig clamping of engine brackets
Holding an aluminium bracket for torque checking draws on the 527.8 N pull stroke at 0.5 MPa when the clamp retracts clear of the fixture.
Diverter arm on parcel sortation
Switching parcels between belts at up to 800 mm/s benefits from both-end cushions that stop the arm without jolt or cover hammering.
Depth setting on a leak-test press
The 40 mm trim range lets a technician match the probe stroke to different housing depths without remachining the jig or buying a new cylinder.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X150-40S the Right Cylinder?
Compare before you commit: the 32 mm bore gives 402.2 N push at 0.5 MPa and the 50 mm bore 981.3 N, placing this 40 mm unit in the middle for 400-600 N jobs. Remember the trim screw shortens the extend stroke only and will not lock the piston against backdrift when air fails. FA and LB mountings plus I and Y knuckle options suit most jig plates, and the built-in magnet accepts CMSG / DMSG / EMSG switches with no special order. On a 150 mm stroke, minimise side load on the 16 mm rod with external guides.
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 MACJ40X150-40S FAQ
At 0.5 MPa: 628.3 N push, 527.8 N pull. At 0.7 MPa: 879.6 N push, 738.9 N pull. Theoretical limit 128.1 kgf at 1.0 MPa. Stroke is 150 mm, the extend trim window is 40 mm, the rod is 16 mm hard-chrome steel, and the air port is 1/8".
Each end carries a variable air cushion, so shock at 800 mm/s travel is absorbed by air rather than bumpers alone, letting you speed up cycles safely. Fix the body with an FA flange or LB foot, choose I or Y knuckles for pivot links, and clip a CMSG, DMSG or EMSG switch onto the standard magnet.
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