Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X20-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X20-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 20mm 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.
- BoreØ25 mm
- Stroke20 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 MACJ25X20-10S
Only 20 mm of travel is needed here, delivered double-acting with a 10 mm adjustable extend window and variable cushioning at each end. The MACJ series rolls a stainless-steel barrel into aluminium covers with a stainless block, so this short-stroke unit survives splash zones and humid workshops that chew up painted minis. From a 10 mm hard-chrome rod it outputs 245.3 N extend and 206.1 N retract at 0.5 MPa.
Derate to about 147 N for continuous work at 0.5 MPa; that still lifts roughly 12 kg vertically once a 2:1 margin is kept. The piston magnet comes standard - drop a CMSG or EMSG switch on for end-of-stroke sensing. The stop screw sets position, not holding: with no air the rod can settle, so lock the load externally.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X20-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X20-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 20 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 300 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MACJ25X20-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 (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 MACJ25X20-10S Is Used
Kick-off on pick-and-place slides
A 20 mm kick clears parts off a vacuum cup on a small pick-and-place head; the 10 mm window absorbs fixture tolerance without a redesign.
Pin clamp on welding jigs
Short-stroke pin clamps lock weld fixtures; 245.3 N at 0.5 MPa secures light brackets while the variable cushion tames the snap at seat.
Eject confirm on test rigs
A CMSG switch on the standard magnet proves the ejector reached seat on an electronics test bench before the probe cycle fires.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X20-10S the Right Cylinder?
Short 20 mm strokes tempt buyers toward a 16 mm bore, but that drops push to 100.5 N at 0.5 MPa - this 25 mm barrel more than doubles it, while a 32 mm bore (402.2 N push) is the next rung for heavier clamps. FA flange, LB foot and I or Y rod knuckles cover the fixing options, and the built-in magnet accepts CMSG / DMSG / EMSG switches without a special order. The adjuster shortens the extend stroke only and is not a mid-stroke lock on air loss.
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 MACJ25X20-10S FAQ
Push is 245.3 N and pull 206.1 N at 0.5 MPa; at 0.7 MPa these become 343.4 N push and 288.5 N pull. Theoretical peak force at 1.0 MPa is 50 kgf. Pressure range is 0.15-1.0 MPa (22-145 psi) with speeds of 30-800 mm/s.
The riveted body pairs a stainless-steel barrel with a hard-chrome plated rod for corrosion resistance, and the 10 mm adjustable window lets you shorten the extend stroke on site - travel only shrinks, it never grows past 20 mm.
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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