Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 60mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke60 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 MAJ20X60-20S
A double-acting bore 20 mm mini cylinder with a tunable extend stroke: an external stop screw lets you trim the 60 mm stroke by up to 20 mm after installation. At 0.5 MPa it pushes 157 N and pulls 131.9 N, enough for small clamping and positioning heads. The round stainless barrel is riveted to aluminium covers with a rolled seal, and the hard-chrome plated rod (20 um) shrugs off washdown that kills painted minis.
Plan real work at roughly 94 N (0.6 x 157 N) on 0.5 MPa air, or think of it as lifting about 8 kg vertically once a 2:1 margin is kept. The magnet is built in as standard, so CMSG, DMSG or EMSG switches clip on without a special piston. Fixed anti-impact pads soften stroke ends; this is deceleration only, not an adjustable air cushion like the MACJ.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 60 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 MAJ20X60-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | 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 MAJ20X60-20S Is Used
Pick-and-place head on a benchtop feeder
The 157 N push at 0.5 MPa seats small plastic caps, and the 20 mm trim lets you dial reach to the nest without re-gapping the bracket.
Indexing marker on a packaging line
Drop a CMSG switch on the standard magnet to confirm full extension before the print head fires; the stop screw trims overshoot up to 20 mm.
Sample press in a lab automation deck
The stainless barrel copes with reagent splashes, and about 8 kg of vertical lift capacity with margin handles loaded microplate carriers.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-20S the Right Cylinder?
Bore 16 gives 100.5 N push at 0.5 MPa and bore 25 gives 245.3 N, so this 157 N class sits between them - size up when friction or stiction eats margin. The 20 mm window shortens extension only; it is a mechanical end stop, so a losing air line still lets the rod creep and it will not hold a load mid-stroke. FA flange and LB foot mounts plus I or Y rod knuckles cover most fixture jobs. The 60 mm stroke sits well inside the 300 mm standard limit for this bore, and the port is 1/8".
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 MAJ20X60-20S FAQ
At 0.5 MPa it pushes 157.0 N and pulls 131.9 N; at 0.7 MPa, 219.8 N push and 184.7 N pull. The theoretical ceiling is 32.0 kgf at 1.0 MPa. Working range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s, fluid air filtered to 40 um, temperature -20 to +70 C. The port is 1/8" and the rod thread is M8x1.25.
An external stop screw shortens the extend stroke anywhere inside the ordered 20 mm window; the full 60 mm stroke is available when the screw is backed off. It is a mechanical end stop, not a mid-stroke lock: with air lost the piston still drifts, so do not rely on it to keep a load in position.
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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