Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X15-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X15-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 15mm 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
- Stroke15 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 MACJ20X15-10S
A short-stroke actuator built for cramped fixtures: the MACJ20X15-10S is double-acting with an adjustable extend stroke that the on-board stop screw trims by up to 10 mm on site, paired with a variable air cushion at both ends. At 0.5 MPa the 20 mm bore pushes 157 N, so plan on roughly 94 N of usable work rather than the full rating when you size a clamp spring or spring-back platen.
The riveted round body combines a stainless-steel barrel with a hard-chrome plated carbon-steel rod, so mild corrosion and washdown mist are far less of a threat than on painted-steel minis. A magnet comes built in as standard, letting CMSG, DMSG or EMSG switches clip straight onto the tube, and the two-way seal stores grease for longer service between checks.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X15-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X15-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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 MACJ20X15-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | Stroke length in mm. |
| -10 | 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 MACJ20X15-10S Is Used
PCB test fixture clamping
The 15 mm stroke with a 10 mm trim lets a bench technician pull the clamp pad back exactly far enough to load a board, while 94 N of practical force at 0.5 MPa holds it flat against pogo pins.
Glue-flap folding on small cartons
A compact creasing head folds cosmetic carton flaps at up to 800 mm/s, and the dual air cushions absorb the tap at each end so the fold stays crisp without hammering the covers.
Watch-case blank ejection
Short, precise kicks lift finished case blanks out of a soft-jaw jig; the stainless barrel and chrome rod shrug off cutting-fluid mist that would rust a painted mini cylinder.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X15-10S the Right Cylinder?
If 157 N at 0.5 MPa is more than the job needs, the bore 16 MACJ delivers 100.5 N in the same round format; if the load creeps up, bore 25 gives 245.3 N. Remember the stop screw only sets where the extend stroke ends - it is not a brake, so the rod can still drift if supply air is cut. Mount with the FA flange or LB foot, keep speed within 30-800 mm/s, and lean on the standard magnet for switch-based end detection.
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 MACJ20X15-10S FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N (the return side loses area to the rod). At 0.7 MPa push rises to 219.8 N with 184.7 N on the pull side. The theoretical maximum is 32.0 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi).
The rolling-packed body has a stainless-steel tube with a 20 um hard-chrome plated rod, which resists mild corrosion and survives washdown or humid-shop conditions far better than painted or plain aluminium bodies. The magnet is standard, so CMSG / DMSG / EMSG switches mount without any special-order piston.
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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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