Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-100S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-100S 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 MAJ40X125-100S
Where fixture positions change between batches, this bore 40 adjustable cylinder covers it: order a 125 mm stroke and set the extend stop anywhere across a 100 mm window with the external screw. Output is 628.3 N forward and 527.8 N return at 0.5 MPa, or 879.6 N and 738.9 N at 0.7 MPa, with 128.1 kgf as the theoretical maximum. A stainless tube rolled onto aluminium covers forms a compact round body that shrugs off washdown.
Because the magnet is built in at no extra option code, CMSG, DMSG or EMSG reed switches clamp straight onto the barrel for position feedback. The stop screw is purely an extend-side limit, so plan external support if the load hangs vertical when air drops. Usable force at 0.5 MPa works out near 377 N, lifting close to 32 kg with a 2:1 margin.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-100S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-100S |
|---|---|
| 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 MAJ40X125-100S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -100 | 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 MAJ40X125-100S Is Used
Batch-change gate on a grain filler
One cylinder serves multiple filler formats - reset the 100 mm trim window between product runs instead of swapping cylinders.
Case clamp for shrink bundles
527.8 N of pull at 0.5 MPa cinches a clamp jaw tight around shrink-wrapped bundles before strapping.
Mixing-vessel sample ram
A corrosion-resistant stainless body suits a humid pilot plant where the ram dips into vessel ports on demand.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X125-100S the Right Cylinder?
Sizing check: the next bore down (32 mm) delivers 402.2 N push at 0.5 MPa, so heavy clamp or press duties above roughly 377 N working load stay on this 40 mm unit. With 125 mm of travel, keep side loads off the rod or add a guide - the 16 mm rod is not meant to take bending moments. Mounting covers FA flange, LB foot and I/Y knuckles, and the factory-fitted magnet accepts CMSG / DMSG / EMSG sensors without special ordering.
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 MAJ40X125-100S FAQ
Push at 0.5 MPa is 628.3 N and pull 527.8 N; raise supply to 0.7 MPa and you get 879.6 N push and 738.9 N pull. The theoretical peak is 128.1 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa (22-145 psi) and speed 30-800 mm/s.
The external stop screw shortens the extend stroke anywhere inside the ordered 100 mm window - it cannot lengthen travel beyond the ordered 125 mm. It acts as a mechanical end stop only, so the rod still drifts if air pressure is lost.
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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