Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X200-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X200-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 200mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke200 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 MAJ40X200-20S
Packaging machines that retool often need one cylinder to cover several stroke lengths, and the MAJ40X200-20S answers with a 20 mm external trim on its 200 mm extend stroke. It is a double-acting round-body mini: 628.3 N of push and 527.8 N of pull at 0.5 MPa, climbing to 879.6 N at 0.7 MPa, on a supply of 0.15-1.0 MPa (22-145 psi) and speeds of 30-800 mm/s. In static terms the push equates to about 64 kg, so halving it for a safe 2:1 margin still lifts roughly 32 kg vertically - enough for a loaded carton or tray.
Construction is what sets it apart in damp halls: a stainless-steel barrel and a 20 um hard-chrome carbon-steel rod resist the washdown and condensation that ruin painted minis, while the riveted aluminium covers keep the body compact. The magnet is included as standard, so CMSG / DMSG / ESG-style sensing is simply a matter of clipping on a CMSG, DMSG or EMSG switch.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X200-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X200-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 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 MAJ40X200-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 MAJ40X200-20S Is Used
Carton flap tucker
Folds top flaps on a carton sealer; the 20 mm window covers two flap heights after a size change, with 628 N at 0.5 MPa to seat the glued flaps.
Glue-roll nip press
Holds the glue roll against label stock on a labelling turret; the 527.8 N pull at 0.5 MPa retracts the head cleanly every cycle.
Presence gate on a bagger
Blocks bags until the filler clears; a CMSG switch on the built-in magnet reports gate position back to the bagger PLC.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X200-20S the Right Cylinder?
When the duty is lighter than 628 N at 0.5 MPa, the MAJ32 pushes 402.2 N under the same pressure and saves compressed air; 40 mm is the top of the MA bore ladder, so above this class you leave the series. FA flange or LB foot bolts it down, and I or Y rod knuckles serve pivoting tooling.
The trim stop fixes the end of extend but will not hold a load mid-stroke if the air supply drops, so add a blocking or check valve for hanging loads. With 200 mm of travel on a 16 mm rod, guide the load externally rather than letting the rod carry side forces.
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 MAJ40X200-20S FAQ
At 0.5 MPa: 628.3 N extend and 527.8 N retract. At 0.7 MPa: 879.6 N extend and 738.9 N retract. Theoretical maximum at 1.0 MPa is 128.1 kgf. Supply is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s, and the fluid is air filtered to 40 um.
The barrel is stainless steel and the 16 mm rod is hard-chrome plated to about 20 um, so light washdown and humid air are handled far better than by painted mini cylinders. Covers are aluminium alloy, air ports are 1/8", and the magnet for CMSG, DMSG and EMSG switches is already built into the piston.
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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