Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 100mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke100 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 MAJ40X100-50S
Fixtures that change over often benefit from the 50 mm trim window: the extend stroke of this 40 mm bore MAJ can be set anywhere inside it with the external stop screw, no cylinder swap needed. Output is 628 N push and 528 N pull at 0.5 MPa, climbing to 880 N at 0.7 MPa.
Because the magnet ships as standard, CMSG or DMSG switches snap onto the stainless barrel for end-of-stroke signals. The riveted round body and hard-chrome 16 mm rod handle splash and humidity far better than painted minis. Matched to a real part, the rod lifts about 32 kg vertically once a 2:1 margin is applied to the 628 N rating.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 MAJ40X100-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 MAJ40X100-50S Is Used
Gate actuator on a paint line
The stainless barrel stands up to booth humidity while swinging a spray-line gate through its full 100 mm travel.
Depth stop on a drilling unit
Hole depth is dialed in within the 50 mm window, and about 377 N of practical force seats the tool against the work.
Rack ejector on a tray washer
Hot, wet washdown suits the corrosion-resistant round body as it pushes racks off the washer conveyor at shift speed.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-50S the Right Cylinder?
The nearest step down, a 32 mm bore, pushes about 402 N at 0.5 MPa - roughly two thirds of this cylinder's 628 N - so check load friction before downsizing. Nothing in the MA line outsizes the 40 mm bore, so step to the MACJ series if more force or adjustable cushions are required. The trim stop sets position but will not hold a load if air pressure drops; use a separate clamp for that duty. FA flange or LB foot mounting, plus I and Y rod knuckles, covers most fixture layouts, and side loads should be guided outside the cylinder.
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 MAJ40X100-50S FAQ
On 0.5 MPa supply expect 628.3 N extend and 527.8 N retract force; at 0.7 MPa those become 879.6 N and 738.9 N. The 1.0 MPa theoretical ceiling is 128.1 kgf. Approved pressure spans 0.15-1.0 MPa (22-145 psi) and speed runs 30-800 mm/s.
Fixed anti-impact bumper pads soften the strike at each end of travel; they decelerate only and are not adjustable air cushions - the MACJ series carries that feature. Travel speed range is 30-800 mm/s.
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.
Request a Quote for Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X100-50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.