Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-50S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-50S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø20mm bore and 200mm 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
- Stroke200 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 MACJ20X200-50S
A 200 mm stroke with a 50 mm trim window gives the MACJ20X200-50S real setup freedom: the extend stroke can be shortened on the machine without swapping cylinders. The bore 20 body is double-acting with a variable air cushion at both ends, so end-of-stroke shock stays controlled even at speeds up to 800 mm/s.
At 0.5 MPa the piston pushes 157 N and pulls 131.9 N; plan on roughly 94 N of useful force so the cylinder works with margin instead of at its limit. In vertical terms that is about 8 kg of lift with a 2:1 reserve. The riveted stainless barrel and hard-chrome 8 mm rod shrug off washdown and damp shops, and the built-in magnet is standard, so CMSG, DMSG or EMSG switches clip on out of the box.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-50S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-50S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 200 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 MACJ20X200-50S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×200 | 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 MACJ20X200-50S Is Used
Carton diverter pusher
Kicks light cartons off a takeaway conveyor; 94 N of working force copes with corrugated weight and friction, and the 50 mm trim sets the exact park position.
Clamp on a drill jig
Holds aluminium brackets against a drill jig stop; with 157 N at 0.5 MPa the clamp stays positive, and the trim window lets you back the stroke off for thin stock.
Lift finger in an assembly nest
Raises small housings 200 mm between stations; about 8 kg of vertical lift with margin suits parts up to a few kilograms, guided in a slide to spare the 8 mm rod.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ20X200-50S the Right Cylinder?
Size both ways: the 16 mm bore pushes 100.5 N at 0.5 MPa and the 25 mm bore 245.3 N, so bore 20 with about 94 N of working force fits mid-weight gating and clamping. The 200 mm stroke exposes the 8 mm rod to side-load bending, so guide the load externally instead of cantilevering it. The adjuster is a mechanical end stop for extend only - if air is lost the piston still drifts, so never count on it to hold a load. Choose FA flange or LB foot mounting and add I or Y knuckles where the load pivots.
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 MACJ20X200-50S FAQ
Push is 157 N and pull 131.9 N at 0.5 MPa; at 0.7 MPa the figures rise to 219.8 N and 184.7 N. The theoretical ceiling is 32 kgf at 1.0 MPa. Supply pressure runs 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, both ends have a variable cushion, and the extend stroke can be trimmed anywhere across the 50 mm window.
Bore 20 uses a 1/8 inch port with PT thread as standard and G or NPT as options; the 8 mm rod carries an M8x1.25 male thread. The magnet is built in, so CMSG, DMSG or EMSG switches clip straight onto the stainless barrel.
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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.
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Most inquiries answered within 7-8 hours.
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