Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X50-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X50-30S is a genuine double acting, adjustable stroke 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.
- BoreØ40 mm
- Stroke50 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 MAJ40X50-30S
Compact muscle with a trim range: this 50 mm stroke unit pushes 628.3 N at 0.5 MPa and the external stop screw shortens the extend stroke by up to 30 mm for mixed-product runs. A fixed anti-impact pad in the covers absorbs the landing, though it only decelerates; adjustable cushioning lives in the MACJ line, not here.
Construction is a stainless barrel rolled tight around aluminium covers with a hard-chrome plated 16 mm rod, a body that tolerates washdown and damp aisles. The magnet is factory-fitted on every piston, ready for CMSG / DMSG / EMSG position feedback. Do the payload math once: about 377 N of working force at 0.5 MPa equals roughly 32 kg of vertical lift at a 2:1 design margin.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X50-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X50-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MAJ40X50-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X50-30S Is Used
Changeover stop on a solder-pallet conveyor
Reworking the stop screw across the 30 mm window covers three pallet heights without swapping hardware, and 628 N at 0.5 MPa holds pallets square to the wave solderer.
Lane gate on a pick-module roller conveyor
The gate blocks totes at the pick face; the 30 mm trim sets clearance for the tote lip, and a CMSG switch on the standard magnet signals gate-closed to the WMS.
Sample-rack pusher in lab automation
Microplate racks index into a washer with 527.8 N of pull-side control on retract, and the riveted stainless body wipes clean after spill cleanup.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X50-30S the Right Cylinder?
Sizing check: the MAJ32 next size down delivers 402 N at 0.5 MPa, and the 25 mm bore tops out at 245.3 N, so this 40 mm barrel is the ceiling of the MA series. The 30 mm trim range covers three or four variant products on one fixture without re-plumbing. The stop screw sets the extend limit mechanically; it never locks the piston in place when pressure drops, so add a separate clamp if the load must stay put. FA and LB mounts plus I and Y rod knuckles handle most fixturing, and the magnet is already in the piston for CMSG / DMSG / 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 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 MAJ40X50-30S FAQ
Use 628.3 N of push and 527.8 N of pull at 0.5 MPa, or 879.6 N of push at 0.7 MPa; the theoretical maximum is 128.1 kgf at 1.0 MPa. Air supply is 0.15-1.0 MPa (22-145 psi) at a 1/8" port.
FA flange, LB foot, plus I and Y rod knuckles (adjustable models have no SDB option). The -30 window lets the external stop screw shorten the extend stroke by up to 30 mm; speed stays 30-800 mm/s across that range.
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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