Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X250-75S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X250-75S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø25mm bore and 250mm 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
- Stroke250 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 MACJ25X250-75S
Among MACJ options the -75 version carries the widest adjustment: 75 mm of on-site trim across a 250 mm stroke, handy when product sizes change between batches. The cylinder is double-acting with variable air cushioning at each end, holding shock down through the full 30-800 mm/s range. Expect 245.3 N of push and 206.1 N of pull at 0.5 MPa.
Nothing painted here: a stainless round barrel and a 20 um hard-chrome rod shrug off mild corrosion and spray-down, outlasting standard aluminium minis in damp corners of the plant. Worked out for a 2:1 margin, that thrust corresponds to roughly 12 kg of vertical lift; for pushing duty allow about 147 N. The built-in magnet is part of the standard build - CMSG, DMSG and EMSG switches attach without special ordering - and supply pressure runs 0.15-1.0 MPa (22-145 psi).
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X250-75S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X250-75S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MACJ25X250-75S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 25 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -75 | 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 MACJ25X250-75S Is Used
Changeover on a multi-product assembly fixture
The widest 75 mm window means one cylinder covers several product lengths - trim the stop between batches instead of swapping the actuator out.
Reject pusher on a checkweigher line
Tipping underweight packs off the belt: 245.3 N handles the shove, and the wide trim window absorbs pack-size changes without hardware swaps.
Cable reel stop on a harness winding bench
Stopping the reel at a set winding length over the full 250 mm travel, with the variable cushion damping each arrival and the magnet signalling via EMSG switches.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ25X250-75S the Right Cylinder?
A 25 mm bore sits between the 157.0 N of a bore 20 unit and the 402.2 N of a bore 32 at 0.5 MPa, so match the 245.3 N output to your load before ordering. Because 250 mm of travel magnifies any side force, use external guides on long runs or an I knuckle for in-line joints.
Choose FA or LB mounting and rely on the standard magnet for CMSG / DMSG / EMSG position feedback. One caution: the stop screw fixes the extend endpoint but offers no load locking when pressure disappears.
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 MACJ25X250-75S FAQ
Push is 245.3 N and pull 206.1 N at 0.5 MPa; raise the supply to 0.7 MPa and it moves to 343.4 N push with 288.5 N pull. The maximum theoretical force is 50.0 kgf at 1.0 MPa. Connections are 1/8", the 10 mm rod threads M10x1.25, and the extend stroke can be shortened anywhere inside a 75 mm window.
The barrel is stainless steel, the rod is carbon steel plated with 20 um of hard chrome, and the aluminium covers are rolled on for a sealed, riveted body. That mix tolerates washdown splash, humidity and outdoor exposure far longer than painted-steel minis, which rust and seal-fail first. The variable dual cushion further protects the covers from impact damage.
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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