Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 150mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke150 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM8×1.25
- 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 MAJ20X150-20S
Trim 20 mm off the extend stroke of the MAJ20X150-20S whenever the fixture calls for it - the external stop screw takes effect immediately, no cylinder swap, no new order. In double-acting mode the 20 mm bore piston develops 157 N at 0.5 MPa on extend and 131.9 N on retract, plenty for light pushers, clamps and lifters on compact machinery. Rod thread is M8x1.25 and ports are 1/8".
A stainless round barrel rolled onto aluminium covers keeps the body tight and corrosion-ready, an advantage over painted minis in food benches and outdoor cells. The 8 mm hard-chrome rod and two-way grease-retaining seals keep friction low across 30-800 mm/s. For sizing, treat about 94 N as the practical push at 0.5 MPa, or expect roughly 8 kg of vertical lift with a 2:1 safety factor. The magnet ships built in, so CMSG / DMSG / EMSG switches mount straight on.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 300 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MAJ20X150-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | 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 MAJ20X150-20S Is Used
Carton flag pusher
Fold or press cardboard flags on a wrap line: set the pusher's end position once with the 20 mm screw, then let 157 N at 0.5 MPa do the folding.
Small parts ejection
Eject bushings or caps from a plastic mold bench - the stop screw sets how far the ejector reaches into the cavity before returning.
Vision inspection hold
Hold small castings in front of a camera; the built-in magnet and a CMSG switch tell the PLC the part is sitting in position.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-20S the Right Cylinder?
At 157 N push (0.5 MPa) this sits above the bore 16 MAJ's 100.5 N and below the bore 25's 245.3 N - pick 16 for tighter envelopes, 25 for heavier thrust. The 20 mm window covers common retooling shifts on small fixtures. FA and LB mounts plus I and Y rod knuckles suit most brackets. Note the adjuster is an end stop for extension only; it is not a mid-stroke lock and drift can occur if air is lost.
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 MAJ20X150-20S FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; at 0.7 MPa push reaches 219.8 N and pull 184.7 N; maximum theoretical force at 1.0 MPa is 32 kgf. Operating range 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, temperature -20 to +70 C. The extend stroke trims within the 20 mm ordered window.
FA flange and LB foot brackets, plus I and Y rod knuckles for the 8 mm male rod thread. The riveted round-body construction (stainless barrel, aluminium covers) keeps the mounting envelope small, and with no tie-rods along the body, side clearance stays minimal. The adjustable version carries no back-cover code, so confirm front-face fixings from the datasheet.
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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