Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-10S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-10S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 400mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke400 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 MAJ40X400-10S
When a 400 mm move has to land within a couple of millimetres, the MAJ40X400-10S gives a narrow 10 mm trim window over a long double-acting stroke. At 0.5 MPa the push is about 628 N, so budgeting around 377 N for the real work leaves healthy headroom at normal shop pressure.
The hard-chrome plated carbon-steel rod and stainless rolled barrel tolerate coolant mist and cleaning sprays on production floors, and the magnet built in as standard works with CMSG, DMSG and EMSG switches to confirm each indexing position without special-order hardware.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-10S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-10S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 MAJ40X400-10S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -10 | 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 MAJ40X400-10S Is Used
Conveyor stop-gate indexing
Drops a blade to index totes in 400 mm pitches, with the 10 mm trim absorbing gate-roller wear over time.
Drill-slide depth fence
Acts as a long-reach fence on a gantry drill press; 880 N push at 0.7 MPa backs the fence against tool thrust.
Sample-carriage feed
Carries sample racks into an analyzer tunnel; 528 N pull at 0.5 MPa retracts a 15 kg carriage briskly.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X400-10S the Right Cylinder?
This bore out-pushes the 32 mm option (402.2 N at 0.5 MPa) by about half again and tops the MA range; beyond 128 kgf theoretical you are into MAC-series territory. For a 400 mm index stop, guide the product externally - the 16 mm rod is sized for thrust, not for resisting bending over long unsupported travel. Choose FA flange or LB foot mounting, and treat the stop as an end-of-travel fence rather than a parking device, since the piston stays free to move if pressure is ever lost.
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 MAJ40X400-10S FAQ
A narrow window suits repeatability jobs: the stop sets the final 10 mm of the 400 mm extend move so tool or product position stays constant even as seals and linkages wear. Adjustment is a screw turn, not a cylinder swap, and the fixed bumper pads still soften touch-down at the set point.
Push 628.3 N and pull 527.8 N at 0.5 MPa; push 879.6 N and pull 738.9 N at 0.7 MPa; theoretical maximum 128.1 kgf at 1.0 MPa. Operating range 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-800 mm/s.
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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.
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Most inquiries answered within 7-8 hours.
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