Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-30S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 50mm 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.
- BoreØ40 mm
- Stroke50 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM12×1.25
- 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 MACJ40X50-30S
Commissioning flexibility sets the MACJ40X50-30S apart: a 30 mm adjustable window lets you re-tune the 50 mm extend stroke as fixtures change, on a double-acting round body with a variable cushion at each end. The 1/8" port takes 0.15-1.0 MPa (22-145 psi) and cycle speeds reach 800 mm/s.
The 40 mm piston generates 628.3 N at 0.5 MPa, a rating best used as about 377 N of working force to leave reserve for friction and pressure dips. AirTAC rivets the aluminium covers and stainless block onto the high-precision barrel for a sealed round body, and the hard-chrome plated 16 mm rod keeps running in wet or dusty plants. Every unit ships magnetized for CMSG, DMSG and EMSG switches.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-30S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MACJ40X50-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -30 | 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 MACJ40X50-30S Is Used
Sample tray transfer in a lab analyzer
Gentle cushioned stops protect delicate trays; roughly 377 N of working force is ample for slides weighing a few hundred grams.
Hinge pin driver on a door assembly cell
A 50 mm stroke drives pins home and the 30 mm window lets engineers shorten travel for different hinge sizes.
Case lowerer at a packing station
The rod eases small cartons down a chute; the stainless barrel and chrome rod shrug off corrugated dust.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X50-30S the Right Cylinder?
This bore sits between a 32 mm cylinder at 402.2 N and a 50 mm cylinder at 981.3 N (both at 0.5 MPa), so 628.3 N covers medium clamps and kickers. Pick the MACJ40X50-10S or MACJ40X50-20S if a tighter adjustment suits your fixture, or step to the MACJ40X400-100S for long travel. FA flange or LB foot, I and Y rod knuckles on request. Because the trim stop is not a mid-stroke lock, a dropped air line still lets the piston coast, so rely on valving, not the screw, for holding.
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 MACJ40X50-30S FAQ
Bore 40 gives 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, and 128.1 kgf theoretical maximum at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s.
No. Every MACJ40X50-30S includes the magnet as standard, so CMSG, DMSG and EMSG reed or electronic switches mount directly on the barrel for end-of-stroke or position signals with no special-order piston.
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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