Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X40-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X40-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø32mm bore and 40mm 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
- Stroke40 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 MACJ32X40-40S
Here the entire 40 mm stroke doubles as the adjust window, so MACJ32X40-40S can be set to stop at any point in its travel without changing hardware. It stays double-acting throughout, with a variable cushion each end; push is 402.2 N and pull 345.6 N at 0.5 MPa.
Cushion tuning matters when a full 563.0 N at 0.7 MPa meets a heavy tool plate: dial it in and end-of-stroke shock disappears even at 800 mm/s. For vertical work, 402.2 N converts to about 41 kgf, so halving for margin lets it lift roughly 20 kg safely. The hard-chrome rod and stainless round barrel also tolerate washdown and outdoor duty that defeats painted-steel minis.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X40-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X40-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 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 MACJ32X40-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 MACJ32X40-40S Is Used
Carton diverter on a sorter
Swings cartons between outbound lanes across the full 40 mm window, with cushioning absorbing the divert impact.
Slide gate for a pellet hopper
Opens and closes a small slide gate; 402 N at 0.5 MPa overcomes pellet friction and the magnet confirms gate state.
Bench riveting tool
Sets rivets in sheet-metal brackets, using the adjustable stop to control depth across different rivet lengths.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ32X40-40S the Right Cylinder?
Neighbouring sizes frame the choice: bore 25 produces 245.3 N at 0.5 MPa, bore 40 manages 628.3 N, leaving this 32 mm unit ideal between them. Keep in mind the stop screw cannot lengthen travel beyond 40 mm nor lock the piston mid-way; when air pressure fails the rod simply coasts, so design a separate restraint for suspended loads. FA flange and LB foot mounts, I and Y knuckles, and the standard magnet for CMSG, DMSG and EMSG switches round out the package on 1/8" ports.
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 MACJ32X40-40S FAQ
Count on 402.2 N extending and 345.6 N retracting at 0.5 MPa, climbing to 563.0 N and 483.8 N at 0.7 MPa. Maximum theoretical force is 82 kgf at 1.0 MPa, within a rated pressure span of 0.15-1.0 MPa (22-145 psi).
No - the adjuster is a mechanical end stop for the extend stroke, not a lock or brake. If supply pressure drops, the piston can drift, so fit an external holding valve for suspended loads. What it does give is a 40 mm field-settable trim window paired with dual variable cushioning.
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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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