Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X175-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X175-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 175mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke175 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 MAJ40X175-20S
Double-acting with an on-site trim: an external stop screw on the MAJ40X175-20S shortens the 175 mm extend stroke by up to 20 mm, so fitters can dial in the final position without swapping parts. This 40 mm bore pushes 628 N at 0.5 MPa and pulls 528 N, the strongest force class in the MA mini family. Supply 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
The round barrel is stainless steel, riveted to aluminium covers, so damp plants and light washdown do not chew through paint the way they do on steel-bodied minis. The hard-chrome plated 16 mm rod resists scoring at the gland. Work the cylinder near 377 N of real duty at 0.5 MPa and you hold a healthy 40 percent reserve over the rating.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X175-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X175-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 175 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 MAJ40X175-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -20 | 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 MAJ40X175-20S Is Used
Packaging gate actuator
Swinging product gates on a carton line: 628 N swings the gate briskly and the 20 mm window sets the closed position to suit each carton blank.
Light stamping station
A small marking or snap press that needs 175 mm of approach plus a firm 20 mm-tunable end position on a stamped bracket.
End-of-cycle switch stop
With CMSG switches clipped to the standard magnet, the trimmed stop gives a repeatable signal point for PLC handshake on an assembly cell.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X175-20S the Right Cylinder?
Size from the ends: a 32 mm bore gives 402 N at 0.5 MPa, fine under about 240 N of duty, while stepping to 40 mm at 628 N covers heavier gates and clamps. The adjuster is a mechanical end stop for extend only; it is not a mid-stroke lock, so on air loss the rod can still drift. Choose FA flange or LB foot, add I or Y rod knuckles if the linkage needs them, and CMSG, DMSG or EMSG switches mount directly on the standard magnet.
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 MAJ40X175-20S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa that rises to 879.6 N push and 738.9 N pull. The theoretical maximum at 1.0 MPa is 128.1 kgf. Ports are 1/8" and the rod thread is M12x1.25.
Neither. The -20 stop screw only limits how far the rod extends, trimming up to 20 mm off the stroke. Cushioning comes from fixed anti-impact bumper pads that decelerate at the stroke end; they are not adjustable air cushions.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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