Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X350-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X350-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 350mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke350 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 MAJ40X350-30S
Need a long reach that still stops short of the sheet? The MAJ40X350-30S runs 350 mm of double-acting travel and its external stop screw trims the extend stroke anywhere inside a 30 mm window - just turn the screw and lock it. At 0.5 MPa this 40 mm bore pushes 628.3 N against the load and pulls 527.8 N back, which sizing teams read as about 377 N of usable working force on standard shop air.
The body is AirTAC's riveted round mini: stainless-steel barrel, aluminium-alloy covers and a stainless block rolled into a compact, sealed package, with a 20 um hard-chrome layer over the 16 mm carbon-steel rod standing up to misty, mildly corrosive air. Fixed bumper pads take the sting out of stroke ends on every cycle; they only decelerate, since true adjustable cushioning belongs to the MACJ. The trim stop is not a load lock either, so expect drift if pressure drops. A magnet is already in the piston, ready for CMSG / DMSG / EMSG switches.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X350-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X350-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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 MAJ40X350-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 MAJ40X350-30S Is Used
Checkweigher reject pusher
Sweeps underweight snack trays off a checkweigher belt; the 30 mm window dials the reject lane gap to match each tray size.
Bracket punch station
Drives a light punch into aluminum electrical brackets, 879.6 N at 0.7 MPa covering the shear of thin-gauge stock.
Water sampling valve actuator
Opens a sludge-draw valve at a treatment plant, where the stainless barrel and chrome rod laugh at humid, splashed air.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X350-30S the Right Cylinder?
Against its neighbors: the 32 mm bore gives 402.2 N at 0.5 MPa for lighter duties, while 40 mm tops the MA range at 628.3 N, so anything heavier needs a larger series. Ports are 1/8" on this bore with an M12x1.25 male rod thread, and the magnet ships standard for switch sensing. Long 350 mm strokes amplify misalignment: align the load or add an external guide, and note the adjuster is an extend-only end stop, never a mid-stroke holding device.
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 MAJ40X350-30S FAQ
Push 628.3 N and pull 527.8 N at 0.5 MPa; push 879.6 N at 0.7 MPa; theoretical maximum 128.1 kgf at 1.0 MPa. Operating pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s.
Fixed anti-impact pads absorb the piston's arrival at each stroke end, protecting the mechanism over the full 350 mm travel from hard metal-to-metal stops; they decelerate but are not adjustable cushions. Cycle speed spans 30-800 mm/s, and the pads work the same across 0.15-1.0 MPa (22-145 psi).
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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