Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X300-100S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X300-100S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 300mm 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
- Stroke300 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 MACJ25X300-100S
With a full 300 mm stroke - the top of the bore 25 standard range - the MACJ25X300-100S spans conveyor gaps and guard lifts, then lets you shorten the extend stroke by up to 100 mm once the machine is built. It is double-acting with a variable air cushion at both ends: 245.3 N push and 206.1 N pull at 0.5 MPa (22-145 psi supply band, 30-800 mm/s). Size real work at about 147 N, or expect roughly 12.5 kg of vertical lift on a 2:1 margin.
Because every MA cylinder carries a built-in piston magnet, CMSG, DMSG and EMSG position switches drop straight on for end-of-stroke confirmation over that long travel. The rolling-packed stainless barrel and hard-chrome plated rod resist the coolant spray and washdown that eat painted minis.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X300-100S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X300-100S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MACJ25X300-100S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -100 | 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 MACJ25X300-100S Is Used
Parcel sorter diverter
Swings a divert arm across a 300 mm belt gap in a courier sorting hub, the 100 mm window absorbing late conveyor-frame tweaks.
CNC guard lift
Raises a polycarbonate guard door on a lathe cell, cushioned landings protecting the aluminium frame at 30-800 mm/s.
Roastery hopper gate
Slides open a coffee-roaster hopper gate for batch discharge, with about 147 N of usable push at 0.5 MPa across the 300 mm sweep.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X300-100S the Right Cylinder?
Compare before committing: bore 20 manages 157.0 N at 0.5 MPa and bore 32 reaches 402.2 N, so bore 25 sits in the middle at 245.3 N push. At 300 mm of travel keep side loads off the 10 mm rod or guide the load externally, since slender rods bend long before the barrel does. Remember the 100 mm adjuster trims the extend stroke only - it holds position mechanically at end of stroke but will not lock the rod if air pressure is lost. FA flange and LB foot mounts, plus I and Y knuckles, cover the usual fixings; G or NPT thread options are available alongside PT.
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 MACJ25X300-100S FAQ
Push at 0.5 MPa is 245.3 N and pull 206.1 N; at 0.7 MPa the figures become 343.4 N push and 288.5 N pull, peaking at a theoretical 50 kgf at 1.0 MPa. Stroke is 300 mm with a 100 mm adjustable window, double-acting, variable cushions at both ends, 1/8" ports and an M10x1.25 male rod thread.
No - the adjuster is a mechanical end stop for the extend stroke, not a mid-stroke brake, so a suspended rod will settle if pressure fails. For held positions use an external stop or a locking unit. The magnet is standard, so CMSG or DMSG switches will report rod position throughout the 300 mm travel.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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