Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 500mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke500 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM12×1.25
- CushionFixed anti-impact bumper pads
- 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-50S
Five millimetres at a time if needed - the MAJ40X500-50S carries the widest 50 mm trim window of this batch, spanning its 500 mm extend travel. The 40 mm bore develops 628 N forward and 528 N back at 0.5 MPa; halve the rating and you can still raise roughly 32 kg of dead weight, enough for a loaded tote plus fixture. Air supply is 0.15-1.0 MPa (22-145 psi), filtered to 40 um.
Long-travel duty is where the hard-chrome 16 mm rod earns its keep: the plating resists scoring and corrosion across half a metre of exposure every cycle. Fixed bumpers quiet the stroke ends, the piston magnet is fitted as standard for CMSG, DMSG or EMSG switching, and the ports are 1/8" with an M12x1.25 male rod thread.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 mm |
| Acting type | Double acting, adjustable stroke |
| 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 | Fixed anti-impact bumper pads |
| 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-50S Is Used
Stretch-wrapper carriage
Drives the film carriage up a 500 mm mast on a pallet wrapper; the 50 mm window lets maintenance re-home the carriage as film rails wear.
Bottling-line case diverter
Swings a lane diverter on a bottle filler's washdown deck; 628 N at 0.5 MPa moves full 24-pack shippers and the stainless body tolerates caustic foam.
Mezzanine safety-gate ram
Pushes a 15 kg sliding safety gate shut across a mezzanine opening; the working-force margin keeps it moving through dust and grit all shift long.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-50S the Right Cylinder?
No bigger MA bore exists than 40 mm, so if 628 N at 0.5 MPa falls short, move to the MAC cushioned family; the MAJ32 below it delivers 402 N for lighter gates. Over 500 mm of travel the rod will whip under side loads, so support the part in external guides, especially when the full 50 mm trim is used for on-the-fly setup changes. The stop screw fixes the extend endpoint mechanically and will not arrest the load during an air loss - pair it with a locking clamp where dwell matters. FA and LB brackets plus I and Y rod eyes cover the mounting book.
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 Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-50S FAQ
Push 628 N and pull 528 N at 0.5 MPa; push 880 N at 0.7 MPa; 128 kgf theoretical peak at 1.0 MPa. Bore 40 mm, stroke 500 mm with a 50 mm adjustable window, rod 16 mm, ports 1/8", operating pressure 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
The rolled stainless tube, hard-chrome plated rod and aluminium covers give good resistance to moisture, mild chemicals and washdown mist, outlasting painted minis in splash zones. For aggressive media, confirm the seal material against your chemical from the datasheet before ordering.
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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