Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-30S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-30S 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 MACJ20X100-30S
Machines change, and the MACJ20X100-30S is built for that. Within a 30 mm window you can shorten the 100 mm extend stroke to match new tooling, while the double-acting piston and variable air cushion at both ends keep the motion smooth from 30 to 800 mm/s. At 0.5 MPa the 20 mm bore pushes 157 N and pulls 131.9 N, rising to 219.8 N and 184.7 N at 0.7 MPa.
Construction is a riveted stainless round barrel with a hard-chrome plated carbon-steel rod, a body that tolerates humid air and light washdown where painted minis start to rust. Because the magnet ships inside every piston as standard, CMSG / DMSG / EMSG switches drop straight on. For sizing, treat about 94 N as the working push at 0.5 MPa, enough to lift roughly 8 kg vertically at a 2:1 safety margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-30S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-30S |
|---|---|
| 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 MACJ20X100-30S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-30S Is Used
Fill-height gate on a liquid filling line
Adjust the extend stop across 30 mm as bottle formats change; 157 N at 0.5 MPa positions containers firmly without crushing labels.
Sample pusher in a lab autoloader
The stainless barrel tolerates routine wipe-down in analytical instruments, and the standard magnet feeds a CMSG position signal back to the controller.
Bin pick presentation in a kitting cell
Dial the stop so parts present at a consistent height for the gripper; the dual cushion tames arrivals anywhere in the 30-800 mm/s band.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X100-30S the Right Cylinder?
Between the 16 mm bore (100.5 N push at 0.5 MPa) and the 25 mm bore (245.3 N), this 20 mm bore lands at 157 N - right for stoppers, gates and light clamps. The 30 mm trim range is set by an external screw that limits the extend stroke only; it is not a mid-stroke lock and cannot hold a load against air loss, so pair it with a locking valve if that matters. Keep side loads off the 8 mm rod by guiding them externally, especially over the full 100 mm travel. FA flange or LB foot mounting, optional I or Y knuckles, and a 1/8" port in PT, G or NPT complete the order.
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 MACJ20X100-30S FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; push 219.8 N and pull 184.7 N at 0.7 MPa; theoretical peak 32 kgf at 1.0 MPa. The cylinder is double-acting with a 30 mm adjustable extend window and variable cushion, runs 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) air, and vents through 1/8" ports.
Yes. The variable air cushion at both ends slows only the final millimetres of travel, so you can run the stroke faster overall or move heavier parts without the aluminium covers taking the hit. It is dialed in with the cover adjusters; no extra parts are needed.
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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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