Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-75S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-75S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 225mm stroke, 1/4" 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.
- BoreØ50 mm
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM14×1.5
- 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 MACJ50X225-75S
Seventy-five millimetres of on-site trimming range - the widest window in this bore - lets the MACJ50X225-75S adapt its 225 mm extend stroke to fixture changes without swapping cylinders. Underneath sits the familiar MA build: a stainless round barrel rolled onto aluminium covers, a 20 um hard-chrome rod, and a variable air cushion at each end that tames end-of-stroke shock at speeds up to 800 mm/s.
Force-wise the 50 mm bore pushes 981 N at 0.5 MPa and 1374 N at 0.7 MPa; in practice, budget around 589 N for the actual work so the cylinder never runs at its ceiling. That headroom, plus corrosion resistance no painted mini can match, suits long-run packaging machines and outdoor equipment exposed to spray and condensation.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-75S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-75S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 225 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 500 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 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 MACJ50X225-75S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×225 | 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 MACJ50X225-75S Is Used
Web tension arm on a converting line
Loads a dancer or tension roller across paper or film webs, using the 75 mm window to retune arm travel when the web path or roll diameter changes.
Ejection ram in a small press shop
Kicks finished stampings clear of a die on a 225 mm run, with the cushion absorbing the hit so thin parts are not marked at ejection speed.
Bag-face hold-down on a VFFS bagger
Clamps the film tube during sealing on a vertical form-fill-seal machine; the stainless body shrugs off product dust and periodic wipe-downs.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-75S the Right Cylinder?
Anchor the choice against neighbours: bore 40 tops out at 628 N of push at 0.5 MPa while bore 63 delivers 1558 N, so 50 mm is the middle path for forces in the 500-600 N band. With a long 225 mm stroke, side loads and rod bending deserve attention - guide the load in slides or pick an LB foot with external guidance rather than cantilevering the rod. The adjuster defines the extend endpoint and will not hold position against a dropped air supply, so plan a separate holding method. For sensing, the built-in magnet means CMSG, DMSG or EMSG switches drop onto the barrel out of the box.
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 MACJ50X225-75S FAQ
Yes: 981 N push / 881 N pull at 0.5 MPa, 1374 N push / 1233 N pull at 0.7 MPa, and about 200 kgf theoretical maximum at 1.0 MPa. The bore runs on 0.15-1.0 MPa (22-145 psi) air with a 1.5 MPa (215 psi) proof rating and a 1/4" port.
The rolled stainless barrel and 20 um hard-chrome rod resist rust from condensation, washdown and outdoor exposure - spots where painted or plain aluminium minis pit and seal life suffers. Combine that with the standard-fit magnet for CMSG, DMSG or EMSG switches and a two-way grease-retaining piston seal, and the body is built for long, wet service rather than a dry bench.
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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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