Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-50S 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 MACJ50X225-50S
Adjustability leads the spec sheet: with a -50 suffix, the MACJ50X225-50S lets you shorten the extend stroke by up to 50 mm using the external stop screw, on top of a variable air cushion at both ends that absorbs the shock of faster cycles. The 50 mm bore delivers 981 N of push at 0.5 MPa and 1374 N at 0.7 MPa, all from a riveted stainless round barrel rather than a bolted construction.
Buyers planning vertical work can use this: 981 N at 0.5 MPa equates to about 100 kg of lift at full rating, so halving for a 2:1 margin gives roughly 50 kg of comfortable vertical lift per cylinder. The heterogeneous piston seal holds its own grease for long service intervals, and the magnet ships installed, ready for CMSG, DMSG or EMSG sensing with no special-order piston.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-50S |
|---|---|
| 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 MACJ50X225-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×225 | 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 MACJ50X225-50S Is Used
Rotary dial table index stop
Sets a repeatable stop point for a 6- or 8-station indexing table, trimming the extend stroke in fine increments across the 50 mm window until each station lines up.
Bench fixture clamping in a machine shop
Clamps aluminium workpieces on a milling fixture with about 589 N of realistic force at 0.5 MPa; the cushion keeps the clamp from slamming onto finished surfaces.
Tote pusher on a distribution sorter
Kicks totes between conveyor lanes in a warehouse sorting loop, where the standard magnet feeds CMSG switch signals back to the PLC at both end positions.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X225-50S the Right Cylinder?
Sizing both directions: dropping to bore 40 cuts force to 628 N at 0.5 MPa, stepping up to bore 63 buys 1558 N, so pick 50 mm when the load sits near 500-600 N of working effort. The stop screw fixes the extend endpoint only; it is not a mid-stroke lock, and with air pressure removed the piston can settle under load, so add a locking valve or external support when holding matters. FA flange and LB foot mountings plus I and Y knuckles cover most fixture layouts, and supply pressure spans 0.15-1.0 MPa (22-145 psi).
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 MACJ50X225-50S FAQ
Use these: 981 N push and 881 N pull at 0.5 MPa, 1374 N push and 1233 N pull at 0.7 MPa, and a theoretical ceiling near 200 kgf at 1.0 MPa. Supply air between 0.15-1.0 MPa (22-145 psi) and keep rod speed within 30-800 mm/s; ports are 1/4" as standard for this bore.
It is a mechanical end stop for the extend direction, nothing more. If pressure drops, the rod is free to drift, so the -50 trim should never be counted on to hold a load in place. For true holding, fit a piloted check or locking valve in the line, or support the load externally. The dual variable cushions remain fully tunable for deceleration either way.
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1-Year Warranty
Covers non-human-caused product damage.
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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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