Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X20-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X20-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø16mm bore and 20mm stroke, M5×0.8 air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ16 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- 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 MAJ16X20-20S
With a trim window as wide as its 20 mm stroke, this 16 mm bore cylinder can be wound down almost to zero extend travel - handy when a fixture needs a placeholder motion that later gets tuned. Air drives both directions: 100.5 N push and 86.4 N pull at 0.5 MPa, rising to 140.7 N at 0.7 MPa.
Its body is a stainless round tube riveted to aluminium-alloy covers, with a hard-chrome plated 6 mm rod that shrugs off washdown splash. The magnet ships built in, so CMSG / DMSG / EMSG switches attach with no special piston. For job sizing, assume about 60 N of usable push at 0.5 MPa - enough to carry a 5 kg part upward once a 2:1 margin is applied, or to snap small lids home. Fixed bumper pads soften each end; the stop screw is a positioning stop, not a brake, so the rod still drifts on pressure loss.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X20-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X20-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 20 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 101 N | 86 N |
| 0.7 MPa | 141 N | 121 N |
| Max (@1.0 MPa) | 21 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 MAJ16X20-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 16 | Bore size in mm. |
| ×20 | 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 MAJ16X20-20S Is Used
Boss ejector on small mold trials
Kicks short molded bosses free of trial nests; the full-span 20 mm trim lets molders collapse the motion while tooling is still being cut.
Hold-down clamp on a drilling jig
Pivots a clamp arm over 20 mm with 100.5 N of push at 0.5 MPa, the stop tuned so the arm never over-closes on thin sheet.
Raise pin in a test nest
Lifts a device under test off its contact pins between measurements; a CMSG switch on the standard magnet confirms the raised detent.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ16X20-20S the Right Cylinder?
As the entry bore of the MAJ range, this cylinder is sized upward from: loads beyond roughly 60 N at 0.5 MPa call for the 20 mm bore (157 N push) or the 25 mm bore (245.3 N). The 20 mm travel keeps rod bending negligible, but add external guidance for repeatable precision. Mount via FA flange, LB foot or I / Y rod knuckles; the fitted magnet pairs with CMSG / DMSG / EMSG switches. Since the trim window spans the whole stroke, you can nearly close the extend motion during setup. Adjustable cushions live in the MACJ series; a rod through both ends is MAD territory.
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 MAJ16X20-20S FAQ
At 0.5 MPa the cylinder pushes 100.5 N and pulls 86.4 N; at 0.7 MPa, 140.7 N and 120.9 N, with a 20.5 kgf theoretical peak at 1.0 MPa. Air supply 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), port M5x0.8, 6 mm rod with M6x1.0 thread.
Yes - the ordered window equals the full stroke, so the external stop can trim extend travel from 20 mm down to almost nothing for setup trials. It shortens only, never lengthens. Retraction is unaffected, and the stop is a positioning end stop rather than a load-holding device.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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