Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X25-10S
The AirTAC MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X25-10S is a genuine double acting, double rod, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 25mm 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
- Stroke25 mm
- Port size1/8"
- Acting typeDouble acting, double rod, 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 MACJ40X25-10S
Short strokes with fine adjustment is where the MACJ40X25-10S earns its slot: a 25 mm extend stroke you can trim down by 10 mm, ideal where an on-site positional tweak beats a cylinder swap. It is double-acting with a variable cushion at each end, running 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air.
The riveted stainless barrel and hard-chrome plated rod shrug off moisture and mild washdown, a real edge over painted minis in food-adjacent cells. The magnet is built in as standard for CMSG, DMSG or EMSG sensing.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X25-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X25-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod, 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 kgf |
MAJ / MACJ are double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X25-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -10 | 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 (double rod, 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 MACJ40X25-10S Is Used
PCB test fixture clamp
Clamping boards inside an ICT machine: the 10 mm trim dials the clamp gap to each board thickness, and about 377 N of working force seats the probes reliably.
Vial stopper press
A compact benchtop press for capping sample vials: 628 N at 0.5 MPa presses stoppers home while the end cushion protects the glassware.
Small-part ejector on an assembly bench
Knocking a pressed bushing out of a locating nest: the 25 mm stroke cycles fast and the cushion removes the metallic clunk on every hit.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X25-10S the Right Cylinder?
Below this, the 32 mm MACJ pushes 402 N at 0.5 MPa; above, the 50 mm reaches 981 N - pick this 40 mm model when 628 N matches the part. At a 25 mm stroke, side-load concerns are modest, but an FA flange or LB foot keeps the 16 mm rod aligned; I and Y knuckles suit pivoting clamps. The trim screw shortens the extend stroke only and is not a position lock: on air loss the rod can still drift. Magnet included, so sensing needs no extras.
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 MACJ40X25-10S FAQ
Double-acting, with the extend stroke adjustable down by up to 10 mm from 25 mm, variable cushions at both ends, 0.15-1.0 MPa (22-145 psi) supply and 30-800 mm/s speed.
Bore 40 units take 1/8" air ports with an M12x1.25 male thread on the 16 mm rod. Mount with an FA flange or LB foot, and add I or Y rod knuckles where the load pivots. The magnet is built in as standard, so CMSG, DMSG or EMSG switches sit straight on the barrel.
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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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