Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X350-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X350-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 350mm 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
- Stroke350 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 MACJ50X350-50S
A wide 50 mm adjustment window makes the MACJ50X350-50S the most flexible variant in this 350 mm stroke group: the extend stroke can be shortened anywhere across 50 mm by a front-mounted stop screw, while air still powers retraction. Rated at 981 N push and 881 N pull at 0.5 MPa, it sits in the medium-heavy class for a mini cylinder.
The two-way piston seal stores grease between the lips, extending service intervals inside a barrel that is stainless steel throughout and paired with a hard-chrome plated rod. Position feedback is simple: the magnet is installed as standard, so CMSG, DMSG or EMSG switches mount without ordering options. At the full 0.5 MPa rating the bore is good for roughly 100 kg of vertical lift - halve that to about 50 kg if you want a 2:1 margin on the part weight.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X350-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X350-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 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 MACJ50X350-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×350 | 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 MACJ50X350-50S Is Used
Mold part ejection
Ejects cooled housings from shallow injection molds; the 50 mm window suits different cavity depths on one press.
Small lift table
Raises fixture plates weighing about 50 kg in an assembly cell, with the 2:1 lift margin keeping the cylinder unstressed.
Bushings press
Seats bushings into cast housings using the 1374 N available at 0.7 MPa, cushioned at both stroke ends.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X350-50S the Right Cylinder?
Compare against a 40 mm bore at 628 N and a 63 mm bore at 1558 N, both quoted at 0.5 MPa, before committing to the 50 mm bore. The mechanical stop defines the extend position only; it is not a load-holding device, so external locking is needed where the load must stay put on air failure. FA flange and LB foot bases cover fixed mounting, and the 1/4" port supports the full 30-800 mm/s speed band.
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 MACJ50X350-50S FAQ
Push at 0.5 MPa is 981.3 N and pull is 880.8 N. Raise supply to 0.7 MPa for 1373.8 N push and 1233.1 N pull. The 50 mm bore tops out at 200.1 kgf theoretical force at 1.0 MPa.
No. Every MA-series cylinder ships with a built-in magnet, so CMSG, DMSG or EMSG reed and Hall switches clip onto the 350 mm barrel wherever an end-of-stroke or mid-window signal is needed - no special piston or retrofit kit.
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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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