Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-20S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 100mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke100 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 MAJ20X100-20S
Trim the extend stroke of the MAJ20X100-20S anywhere within a 20 mm window using the stop screw on the head - no shimming and no re-ordering when the product size changes. This double-acting 20 mm bore mini delivers 157 N forward and 131.9 N back at 0.5 MPa, scaling to 219.8 N at 0.7 MPa and a 32 kgf theoretical maximum. Supply pressure spans 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof.
Derate to about 94 N for steady work at 0.5 MPa; matched to real part weights, that is roughly 8 kg of vertical lift once a 2:1 reserve is kept. The rolled stainless barrel and 20 um hard-chrome rod shrug off splash and humidity, and every unit ships with its magnet built in, so CMSG / DMSG / EMSG switches mount without a special-order piston.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-20S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 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 MAJ20X100-20S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 MAJ20X100-20S Is Used
Cosmetic filler head lift
Raises and lowers a light fill nozzle assembly over cosmetic bottles; the trimmed extend end sets the fill gap precisely, and the 8 kg vertical-lift class covers the head weight with margin.
Parcel sorter flap
Swings a divert flap on a small parcel or tote sorter. The 20 mm trim dials in flap travel so parcels land centred in the chute, while 157 N at 0.5 MPa moves the flap in well under a second at speed settings up to 800 mm/s.
Carton infeed stopper
Stops cartons at a case-packer infeed gate until the lane is clear. Fixed bumper pads absorb the carton-stop shock at the extend end, and the stainless body copes with adhesive and dust around the sealing station.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-20S the Right Cylinder?
Compare candidates by thrust: the 16 mm bore makes 100.5 N at 0.5 MPa, this 20 mm makes 157 N, and the 25 mm makes 245.3 N. Choose the 20 mm when the working load sits near 94 N with margin to spare. LB foot or FA flange mounting suits fixed jigs, and the magnet arrives fitted so switch-based sensing needs no options. Do not use the stop screw to hold loads mid-travel - it sets the end of stroke only, and a de-pressurized rod drifts.
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 MAJ20X100-20S FAQ
Use 157 N push and 131.9 N pull at 0.5 MPa as the baseline; at 0.7 MPa the push rises to 219.8 N and the pull to 184.7 N. The theoretical peak for this bore at 1.0 MPa is 32 kgf. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s.
No - every MAJ20X100-20S ships with the piston magnet fitted as standard, so CMSG, DMSG and EMSG reed switches clamp onto the stainless barrel and read end or intermediate positions immediately. The air ports on this 20 mm bore are 1/8".
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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