Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-30S 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 MAJ20X100-30S
A 30 mm on-site trim range makes the MAJ20X100-30S the pick when one machine runs several product sizes: the external stop screw shortens the extend stroke within the ordered window while the full 100 mm remains available. At 0.5 MPa this double-acting 20 mm bore pushes 157 N and retracts with 131.9 N; at 0.7 MPa the figures climb to 219.8 N and 184.7 N, with a 32 kgf theoretical peak. Speed runs 30-800 mm/s across a 0.15-1.0 MPa (22-145 psi) supply.
For sizing, treat about 94 N as the practical working force at 0.5 MPa - enough to lift roughly 8 kg vertically with a 2:1 cushion. The riveted body pairs a stainless tube with aluminium covers and a hard-chrome 8 mm rod, a combination that outlasts painted minis in humid or outdoor air; the standard magnet accepts CMSG, DMSG and EMSG switches out of the box, and fixed bumper pads soften both stroke ends.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-30S |
|---|---|
| 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 MAJ20X100-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -30 | 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 MAJ20X100-30S Is Used
Bakery tray pusher
Pushes trays through a washing and depositing line in a bakery. The stainless barrel and chrome rod survive steam and frequent hose-down, and the 30 mm window lets staff retune push travel when tray formats change.
Laser marker part stop
Positions a part stop under a laser marking head for two bracket lengths on one fixture. Adjusting the extend stop between batch changeovers takes seconds, and 94 N of working force holds parts square against the back rail.
Pinch valve actuator
Actuates a small pinch valve on a chemical dosing skid. The 131.9 N pull at 0.5 MPa re-closes the sleeve reliably, and the fixed bumpers stop the stem from slamming at either end of the 100 mm travel.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-30S the Right Cylinder?
Sizing bracket: the 16 mm MAJ makes 100.5 N at 0.5 MPa and the 25 mm MAJ makes 245.3 N, so the 20 mm at 157 N sits between them - right for loads that settle near 94 N after derating. The 100 mm stroke is standard for this bore, whose catalogue limit is 300 mm. Pick an FA flange for face-mount plates or an LB foot for base fixing, and note the trim stop never holds the piston in place 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 MAJ20X100-30S FAQ
Push at 0.5 MPa is 157 N and pull at 0.5 MPa is 131.9 N. At 0.7 MPa expect 219.8 N push and 184.7 N pull. The theoretical maximum at 1.0 MPa is 32 kgf. Supply is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof, and speed spans 30-800 mm/s.
The barrel is stainless steel and the 8 mm piston rod is carbon steel hard-chrome plated to 20 um, so splash, humidity and occasional washdown do not quickly corrode the working surfaces. Aluminium covers are rolled onto the tube for a sealed body, and the air ports on this 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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