Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-20S 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 MACJ20X100-20S
Field tuning is the whole point of the MACJ20X100-20S: a stop screw shortens the 100 mm extend stroke to any length inside a 20 mm window, while double-acting air power and a variable cushion at both ends keep motion crisp at 30-800 mm/s. The 20 mm bore delivers 157 N pushing at 0.5 MPa and 219.8 N at 0.7 MPa - a class that suits 100 mm gates, light presses and stops.
The riveted round body pairs a stainless-steel barrel with a hard-chrome plated rod, so mild corrosion and periodic washdown are non-events compared with painted mini cylinders. Every unit carries its magnet as standard; clip on a CMSG, DMSG or EMSG switch for end-of-travel signalling. As a sizing shortcut, budget about 94 N of usable push at 0.5 MPa, or roughly 8 kg of vertical lift at a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-20S |
|---|---|
| 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 MACJ20X100-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-20S Is Used
Carton stop on a pick-and-place conveyor
A 20 mm adjustment span absorbs carton size changes on a conveyor stop, and the variable cushion halts loads up to about 8 kg without jolt.
Bench-top crimp fixture for terminals
157 N at 0.5 MPa presses wire terminals in small-batch electrical assembly, with 219.8 N available when the line runs at 0.7 MPa.
Indexing pawl on a dial table
The 20 mm window lets a pawl engage the next pocket precisely; an EMSG switch, matching the standard magnet, verifies index completion each cycle.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-20S the Right Cylinder?
Compare both directions of the class before committing: the 16 mm bore gives 100.5 N push at 0.5 MPa, this 20 mm bore 157 N push and 131.9 N pull, and the 25 mm bore 245.3 N. Cushioning at each end lets you run faster or carry more without hammering the aluminium covers. The stop is an extend-side mechanical limit, not a load brake - with air lost, a drifted rod is still possible, so plan external holding where needed. FA flange and LB foot mounts are catalogued, I and Y knuckles suit pivoting loads, and the 1/8" port takes PT, G or NPT fittings.
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 MACJ20X100-20S FAQ
At 0.5 MPa the bore pushes 157 N and pulls 131.9 N; at 0.7 MPa those rise to 219.8 N and 184.7 N, and the theoretical maximum is 32 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa (215 psi), speed 30-800 mm/s, and the extend stroke adjusts across a 20 mm window.
The magnet is built into every MA-series piston, so CMSG, DMSG and EMSG switches mount without ordering a sensed version. The stainless barrel with hard-chrome plated rod, the variable air cushion at both ends and your choice of PT, G or NPT threads are likewise standard, no surcharge.
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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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