Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-10S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-10S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 125mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke125 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 MAJ40X125-10S
Need only a small positional correction rather than a wide trim range? This MAJ variant keeps the full 125 mm stroke and lets the stop screw shave up to 10 mm off the extend side. Push force hits 628.3 N at 0.5 MPa (879.6 N at 0.7) and pull reaches 527.8 N (738.9 at 0.7); theoretical peak is 128.1 kgf. The stainless round barrel and hard-chrome carbon rod handle humidity, splash and light outdoor exposure that would rust painted minis.
Expect about 377 N of dependable push once a 60% margin is applied - around 32 kg of vertical lift at 2:1. The riveted body carries fixed bumper pads at both ends to absorb stop impact (no adjustable cushioning here - that is the MAC line), and the standard-fit magnet pairs with CMSG / DMSG / EMSG switches.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-10S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-10S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 MAJ40X125-10S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 MAJ40X125-10S Is Used
Test-rig positioning stop
A 10 mm trim range lets technicians nudge the extend limit of a fatigue-test fixture without reordering cylinders.
Wood-glue press gate
628 N at 0.5 MPa holds small hardwood panels against a fence in a joinery shop; the 10 mm window sets panel thickness.
Index stop on a rotary fixture
Fixed bumper pads absorb the index stop's impact each cycle, keeping positioning quiet on a CNC rotary table fixture.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-10S the Right Cylinder?
Drop to the 32 mm bore (402.2 N push / 345.6 N pull at 0.5 MPa) when the job needs under about 377 N of working force; stay at 40 mm for the extra headroom. Note that the stop screw sets an extend limit - it is not a mid-stroke lock, and the rod will still move if supply pressure drops. FA flange or LB foot mounting plus I and Y rod knuckles cover bracket layouts, with the magnet already inside for switch mounting.
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 MAJ40X125-10S FAQ
The bore 40 MAJ delivers 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N and 738.9 N at 0.7 MPa, and 128.1 kgf theoretical maximum at 1.0 MPa. That works within 0.15-1.0 MPa (22-145 psi) supply and 30-800 mm/s speed.
The round barrel is stainless steel riveted to aluminium covers, and the carbon-steel rod carries a 20 um hard-chrome plating - together they resist mild corrosion and light washdown far better than painted mini cylinders.
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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