Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-50S 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 MACJ25X125-50S
Half its 125 mm travel can be tuned away on this bore 25 MACJ: the -50S suffix means a 50 mm adjustable window, so a stop screw shortens the extend stroke on site anywhere in that range while a variable air cushion at both ends damps the landing. At 0.5 MPa the piston pushes 245.3 N and pulls 206.1 N; at 0.7 MPa that becomes 343.4 N push and 288.5 N pull, topping out near 50 kgf at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi) filtered air at 30-800 mm/s.
AirTAC rolls the aluminium covers and stainless block onto the stainless barrel for a sealed round body, and the hard-chrome plated carbon-steel rod resists wear and splash far better than painted minis in wet food or outdoor stations. Expect about 147 N of dependable force at 0.5 MPa - 60 percent of rated push - which raises roughly 12 kg vertically with a 2:1 margin. The piston magnet is factory-fitted, ready for CMSG, DMSG or EMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-50S |
|---|---|
| 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 MACJ25X125-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -50 | 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 MACJ25X125-50S Is Used
Bottle lane clearing on a filling line
The 125 mm push sweeps stragglers off a conveyor lane and the 50 mm window lets staff re-set push length after a format change; 206.1 N pull resets the pusher briskly.
Glue-bead dosing slide in an appliance cell
Trim the dosing slide within the 50 mm window to change bead length per model variant, with the cushions stopping the bead cleanly at speed.
Fixture clamp on a CNC jig
Clamping a machined bracket needs repeatable force - about 147 N of working push at 0.5 MPa - and the 50 mm window tunes clamp position across part revisions.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X125-50S the Right Cylinder?
Bore 25 occupies a useful middle: bore 20 manages only 157 N at 0.5 MPa while bore 32 reaches 402.2 N, so choose 25 when the job needs under about 147 N of real work and bore 20 is too marginal. The 50 mm adjuster is a mechanical end stop for extension, not a brake - if air drops the rod still moves, so never rely on it to hold a hanging load. Pick FA flange or LB foot mounting; I and Y knuckles fit pivoting fixtures. With 125 mm of stroke, support side loads outside the cylinder to protect the 10 mm rod.
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 MACJ25X125-50S FAQ
Count on 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, and a 50 kgf theoretical maximum at 1.0 MPa. The cylinder is bore 25 with a 125 mm stroke, a 50 mm adjustable window, 1/8" air ports, a 10 mm chrome rod, 0.15-1.0 MPa (22-145 psi) working pressure and 30-800 mm/s speed.
The round barrel is stainless steel and the covers are riveted on in a rolling-packed, sealed body, while the carbon-steel rod carries a 20 um hard-chrome plating. That combination resists mild corrosion and routine hose-downs far better than painted or plain aluminium mini cylinders.
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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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