Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X40-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X40-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 40mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke40 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 MAJ40X40-30S
At the top of AirTAC's MA bore ladder, the MAJ40X40-30S is a double-acting round-body mini cylinder whose extend stroke can be trimmed by up to 30 mm with an external stop screw. At 0.5 MPa it pushes about 628 N and pulls about 528 N, rising to roughly 880 N at 0.7 MPa.
The stainless-steel barrel and hard-chrome plated 16 mm rod handle damp and lightly corrosive conditions better than painted minis, while the riveted aluminium covers keep the envelope compact. A piston magnet is built in as standard, so CMSG, DMSG or EMSG switches snap onto the barrel without a special-order cylinder.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X40-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X40-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 MAJ40X40-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 MAJ40X40-30S Is Used
Drilling fixture clamping
Trims from 40 mm down to 10 mm so a clamp arm lands on brass fittings without crushing them at the jig.
Bench-top press assist
The 628 N push at 0.5 MPa seats dowels and small bearings in maintenance-shop repair jigs.
Small-batch lid tamping
A 30 mm window lets one cylinder serve different jar heights on a craft-food filling bench.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X40-30S the Right Cylinder?
A 32 mm bore pushes about 402 N at 0.5 MPa, so if that leaves no margin after you reserve roughly 377 N for the actual work, this 40 mm bore is the step up - and it is the largest AirTAC builds in the MA series. Air connects via a 1/8" port and speed spans 30-800 mm/s. Mount on an FA flange or LB foot and add I or Y rod knuckles where the load needs a swivel. Note that the 30 mm trim acts as an extend-side end stop: it does not immobilize the piston, so a dropped air line lets the rod drift.
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 MAJ40X40-30S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa push rises to 879.6 N and pull to 738.9 N. The theoretical maximum is 128.1 kgf at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi) of 40 um filtered air, proof tested to 1.5 MPa (215 psi), with speeds of 30-800 mm/s.
No. Every MAJ cylinder ships with the piston magnet already installed as standard, so CMSG, DMSG or EMSG switches mount directly on the stainless barrel to signal extend or retract positions.
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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