Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X20-10S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X20-10S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 20mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke20 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 MAJ20X20-10S
A 20 mm stroke with a 10 mm trim window makes the MAJ20X20-10S a fine-position actuator: set the exact extend point with the external stop screw, then forget it. It is double-acting, cycling 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) air, and bore 20 output is 157 N push at 0.5 MPa (219.8 N at 0.7 MPa). Fixed anti-impact pads quiet the short travel at both ends.
Round stainless barrel, riveted aluminium covers, hard-chrome Dia 8 rod: the sealed rolled construction keeps grease in and splash out, an edge over painted minis in food and outdoor duty. With about 94 N as a sensible continuous working force (60 percent of the rating), the theoretical 16 kgf lift drops to roughly 8 kg vertically with a 2:1 margin. Every MA piston carries a magnet, so CMSG / DMSG / EMSG switches fit out of the box.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X20-10S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X20-10S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 MAJ20X20-10S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -10 | 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 MAJ20X20-10S Is Used
Pin press-in station
Press dowel pins into plastic housings; 157 N is right for light interference fits in jig and fixture work.
Sensor flag on a filling line
Drive a metal flag past a photoelectric sensor at high cycle rates; the 20 mm travel keeps cycle time low and the magnet adds direct switch feedback.
Stencil and nozzle docking
Dock a stencil or dispensing nozzle against the worktable with repeatable position, trimmed exactly by the 10 mm window.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X20-10S the Right Cylinder?
Force ladder at 0.5 MPa: 16 mm bore gives 100.5 N, this 20 mm bore gives 157 N, and 25 mm bore gives 245.3 N - step up a size whenever duty cycles run long. The -10 adjuster shortens extension only and is not a load lock; if air fails the piston moves, so build a mechanical rest into the fixture.
FA flange or LB foot plus I or Y knuckles cover most bracket needs, and the 1/8" port takes standard fittings. The stroke is short, so side-load risk is minimal - alignment still matters for seal life.
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 MAJ20X20-10S FAQ
Bore 20 mm, stroke 20 mm, extend stroke adjustable within a 10 mm window. Push 157 N and pull 131.9 N at 0.5 MPa; push 219.8 N and pull 184.7 N at 0.7 MPa; 32 kgf theoretical maximum at 1.0 MPa. Double-acting, 30-800 mm/s, 40 um filtered air, 0.15-1.0 MPa (22-145 psi), 1/8" port, rod Dia 8 with M8x1.25 thread.
No. The magnet is built into the piston as standard on every MA-series cylinder, so CMSG, DMSG or EMSG switches mount in the barrel groove without a special-order unit. Just pick the switch model and cable length when you order the cylinder.
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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