Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-100S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-100S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 125mm 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
- Stroke125 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 MACJ25X125-100S
This bore-25 AirTAC mini cylinder pushes 245.3 N (about 25 kgf) at 0.5 MPa and 343.4 N at 0.7 MPa over a 125 mm stroke, and the external stop screw lets you trim the extend stroke by up to 100 mm without swapping the cylinder. Air drives the rod both ways, and a variable air cushion at each end absorbs end-of-stroke shock, so you can run 30-800 mm/s or carry heavier parts without hammering the covers.
The round body is a rolled stainless barrel with a hard-chrome plated 10 mm rod and riveted aluminium covers, a build that shrugs off washdown and humid corners where painted minis rust. The magnet comes as standard, so CMSG, DMSG or EMSG reed switches mount straight on. For sizing, treat 147 N as the practical working push at 0.5 MPa; that corresponds to lifting about 12.5 kg vertically once a 2:1 margin is applied.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-100S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-100S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 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 MACJ25X125-100S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×125 | 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 MACJ25X125-100S Is Used
Tray stopper on a biscuit line
Extends under the conveyor rail to halt cookie trays; the 100 mm trim lets you dial the stop in per tray format while the cushion keeps the latch quiet.
Cap mold ejection tuning
Short shots on a polypropylene cap press need a shorter eject travel; trim the 125 mm stroke down on site instead of re-ordering a fixed-stroke MAC.
Anodising jig lift
Raises a 12 kg rack of aluminium brackets between dip tanks; the about-12.5 kg vertical figure at 0.5 MPa keeps a 2:1 margin even with guide friction.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-100S the Right Cylinder?
If 245.3 N at 0.5 MPa leaves your load under-served, step up to the 32 mm bore (402.2 N); if it is overkill, the 20 mm bore still gives 157 N. Ports are 1/8" on this bore. Note the -100 stop is a mechanical end stop for the extend stroke, not a mid-stroke lock, so if supply air drops the piston can still be displaced. Choose FA flange or LB foot, add I or Y rod knuckles if the load needs a swivel, and keep side loads off the 10 mm rod at full 125 mm extension.
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 MACJ25X125-100S FAQ
At 0.5 MPa the bore-25 piston pushes 245.3 N and pulls 206.1 N; at 0.7 MPa those figures climb to 343.4 N and 288.5 N. The theoretical maximum is 50 kgf at 1.0 MPa. Working pressure is 0.15-1.0 MPa (22-145 psi) with speed from 30 to 800 mm/s.
The stop screw shortens only the extend stroke, anywhere from 25 mm up to the full 125 mm inside the 100 mm window; it never lengthens travel past 125 mm. Independent air cushions at both ends can be opened or closed to soften landings as load and speed change. The adjuster holds position mechanically and is not a mid-stroke lock, so a de-pressurised piston can still be pushed aside.
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.
Related AirTAC MACJ Cylinders
Request a Quote for Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-100S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.