Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X20-20S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X20-20S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø63mm bore and 20mm stroke, 1/4" 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.
- BoreØ63 mm
- Stroke20 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM14×1.5
- 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 MACJ63X20-20S
Twenty millimetres of travel, all of it trimmable: the MACJ63X20-20S puts 63 mm of bore behind a heavy short-throw job and lets you shave the extend stroke on site within the ordered 20 mm window. Double-acting with a variable air cushion at both ends, it pushes 1558 N at 0.5 MPa and runs 30-800 mm/s.
A short, fat cylinder like this suits tamping and ejecting where every newton counts but travel is tight. The cushion dial-out absorbs the strike so stamps and fixtures last longer. Remember the stop screw is a stroke limiter, not a brake - on air loss the piston still drifts, so pin critical loads mechanically. In lift terms, the 1558 N push equals about 158 kg vertical at 0.5 MPa, or roughly 79 kg once you keep a 2:1 margin.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X20-20S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X20-20S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 500 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | 2041 N |
| Max (@1.0 MPa) | 318 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 MACJ63X20-20S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 63 | Bore size in mm. |
| ×20 | 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 MACJ63X20-20S Is Used
Label tamp head
Drives a tamp pad that presses labels onto kraft cartons at the end of a conveyor; the 20 mm trim window lets operators tune contact depth by hand.
Die ejector pin
Kicks hot brass stampings out of a forming die; 1558 N of push at 0.5 MPa clears parts that a bore 40 cylinder (628 N) stalls on.
Sample dosing ram
Presses a fixed volume of paste from a lab dosing head; the cushion prevents the ram from shocking the glass barrel at stroke end.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ63X20-20S the Right Cylinder?
For comparison, a bore 25 cylinder manages only 245 N of push at 0.5 MPa, a sixth of this barrel's 1558 N, so heavy tamps and ejectors belong here. If you later need more throw, the MACJ63X200-20S shares the same force class with 200 mm of travel. Mount with an FA flange or LB foot and add an I or Y rod knuckle where the load pivots; the magnet is fitted from the factory, so CMSG / DMSG / EMSG switches need no extras. Pressure range 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi).
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 MACJ63X20-20S FAQ
Push is 1558 N and pull 1457 N at 0.5 MPa; at 0.7 MPa those become 2181 N and 2040 N. Theoretical peak output at 1.0 MPa is 317.7 kgf. Plan usable work around 935 N so the cylinder keeps a healthy margin at typical plant pressure.
The round barrel is high-precision stainless steel with a 20 um hard-chrome plated rod, so coolant splash, coastal humidity and outdoor rain do not flake coating into product the way they would on coated mini cylinders.
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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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