Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X300-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X300-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø50mm bore and 300mm 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
- Stroke300 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 MACJ50X300-50S
Biggest trim window in this set: the MACJ50X300-50S allows 50 mm of on-site adjustment to the extend stroke while keeping the full 300 mm travel available. This double-acting mini cylinder carries a variable air cushion, runs 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) air, and generates 981.3 N push and 880.8 N pull at 0.5 MPa.
Its riveted stainless round body with a hard-chrome carbon-steel rod handles condensation, splashes and outdoor dust better than painted housings. Leave headroom in your design: around 589 N of the thrust is a realistic working figure at 0.5 MPa, which matches roughly 50 kg of vertical lifting with a 2:1 safety factor.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X300-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X300-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø50 mm |
| Stroke | 300 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 MACJ50X300-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 50 | Bore size in mm. |
| ×300 | 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 MACJ50X300-50S Is Used
Bale ejector on a baler
Push compressed cardboard off a small baler table; 981.3 N of push at 0.5 MPa clears the chamber and the 50 mm trim tunes the ejection length per bale.
Weld fixture part clamp
Clamp brackets in an automotive weld cell; the hard-chrome rod withstands weld spatter and grinding dust, and an EMSG switch confirms the clamped position.
Dock leveller latch
Latch and release a light dock leveller plate; the mechanical stop defines the latch depth, and 880.8 N of pull at 0.5 MPa snaps the latch back reliably.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ50X300-50S the Right Cylinder?
When 981.3 N at 0.5 MPa covers your load, stay at bore 50; step down to 628.3 N (bore 40) or up to 1557.9 N (bore 63) as the math dictates. With 300 mm of travel and a 16 mm rod, guide any side load externally to protect the rod and seals. FA flange and LB foot cover fixed mounting, while the built-in magnet keeps position feedback simple with CMSG, DMSG or EMSG switches.
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 MACJ50X300-50S FAQ
Rated figures: 981.3 N push and 880.8 N pull at 0.5 MPa; 1373.8 N push and 1233.1 N pull at 0.7 MPa; 200.1 kgf theoretical maximum at 1.0 MPa. It is double-acting with a variable cushion, a 300 mm base stroke, a 50 mm extend trim range, and 1/4" air ports.
Fix the body with an FA flange or LB foot and guide external side loads separately, since the 16 mm rod is sized for thrust rather than bending. The I and Y rod knuckles allow pivoting joints, and the adjuster stop defines the extend position but never acts as a mid-stroke lock.
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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