Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-100S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-100S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 125mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke125 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 MAJ20X125-100S
Many recipes, one cylinder: with a 100 mm extend-stroke window, the AirTAC MAJ20X125-100S can be re-set for a wide family of part heights without swapping actuators. The 20 mm bore, 125 mm stroke body is double-acting, runs at 0.15-1.0 MPa (22-145 psi) and moves at 30-800 mm/s, with fixed bumper pads easing every stop.
Force output is 157 N push and 132 N pull at 0.5 MPa, or 220 N and 185 N at 0.7 MPa, peaking at a theoretical 32 kgf. Divide the push force by gravity and you get roughly 16 kg of vertical capability, about 8 kg once a 2:1 safety margin is applied. Inside, a heterogeneous two-way seal keeps grease in the cylinder, cutting breakaway friction through long, frequently re-adjusted service.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-100S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-100S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 125 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 MAJ20X125-100S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -100 | 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 MAJ20X125-100S Is Used
CNC bar feeder kick-off
Parts leaving a small CNC bar feeder are pushed clear with 157 N at 0.5 MPa; the wide 100 mm window adapts to different stock lengths between setups.
Tray oven gate
A bakery tray-oven loading gate opens and closes through the trimmed stroke, and the fixed bumper pads stop the gate gently at each end of a hot, floury cell.
Conveyor divert stop
Used as a parcel divert stopper on a sortation conveyor, it presents about 94 N of dependable force at 0.5 MPa across a 125 mm approach.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-100S the Right Cylinder?
The 100 mm window is the widest trim range in the MAJ adjustable line - step down to a 10 or 20 mm version when only fine positioning is needed, or up to the 25 mm bore (245 N push at 0.5 MPa) when the 16 mm bore (100 N) is too weak for the job. Keep in mind the stop screw is a mechanical end stop only; if the air supply drops, the piston keeps moving freely, so add a separate check or lock for suspended loads. FA flange, LB foot and the I / Y rod knuckles mount the unit, while the 1/8" port and M8x1.25 male thread keep plumbing simple.
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 MAJ20X125-100S FAQ
This 20 mm bore produces 157 N push and 132 N pull at 0.5 MPa, rising to 220 N push and 185 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf. Supply air between 0.15-1.0 MPa (22-145 psi), keep speed in the 30-800 mm/s band, and plan workloads around 94 N at 0.5 MPa for a long service life.
Every MA-series cylinder ships with the magnet fitted as standard, so CMSG, DMSG and EMSG reed or Hall switches can be banded straight onto the stainless barrel to signal extend and retract positions. No special-order piston is needed, and because the switch rides the round tube it can also confirm each re-set position within the 100 mm trim window.
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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