Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-50S is a genuine double acting, adjustable stroke + cushion 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. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ20 mm
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
- 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-50S
A compact pusher with room to fine-tune: the MACJ20X100-50S is double-acting with an adjustable extend stroke, so the stop screw lets you trim the 100 mm stroke by up to 50 mm on the machine, and a variable air cushion at both ends absorbs the last of the shock. Set line pressure anywhere from 0.15-1.0 MPa (22-145 psi) and run 30-800 mm/s.
At 0.5 MPa the 20 mm bore pushes 157 N and pulls 131.9 N; budget around 94 N of that for real work and the rod lifts about 8 kg vertically at a 2:1 margin. The stainless round barrel and hard-chrome plated 8 mm rod shrug off washdown and mild corrosion better than painted minis, and the magnet that ships standard lets CMSG, DMSG or EMSG switches bolt straight on.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| 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 | Variable air cushion, both ends |
| 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -50 | 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-50S Is Used
Bench press-off station
Knock small housings out of a soft locating nest after machining; 157 N at 0.5 MPa clears light press-fit parts, and the 50 mm trim window dials in the exact eject distance.
Mini conveyor stopper gate
Raise a stop blade under thin parts on a light-duty line; the variable cushion keeps the blade from clattering at the end of each cycle.
Lab dosing head drive
Push a small syringe or pipette head a set distance; trim the extend stroke within the 50 mm window without shimming the mount, and confirm dosed or not-dosed with a DMSG switch.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-50S the Right Cylinder?
Sizing check: if 157 N at 0.5 MPa is more than the job needs, the 16 mm bore gives 100.5 N in the same series; step up to 25 mm for 245.3 N. The adjuster is a mechanical end stop for the extend stroke - it will not lock the load if air is lost, so add a valve where holding matters. FA flange and LB foot mounts plus I and Y knuckles cover most fixings, and the standard magnet means position sensing needs no special piston. MAC fixed-stroke or MACD double-rod versions suit jobs without trimming.
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 On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-50S FAQ
At 0.5 MPa it pushes 157.0 N and pulls 131.9 N; at 0.7 MPa push is 219.8 N and pull 184.7 N; theoretical peak 32 kgf at 1.0 MPa. Pressure range 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-800 mm/s, air port 1/8".
No. Every MACJ cylinder ships with a built-in magnet as standard, so CMSG, DMSG or EMSG switches clamp onto the stainless barrel and read position with nothing special to order.
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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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