Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X200-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X200-50S is a genuine double acting, adjustable stroke 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.
- BoreØ20 mm
- Stroke200 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM8×1.25
- CushionFixed anti-impact bumper pads
- 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X200-50S
A 50 mm adjustment window gives the MAJ20X200-50S room to be re-tuned between product changeovers: back the external stop screw out, set the new extend depth, and lock it. The double-acting 20 mm bore still generates 157 N at 0.5 MPa inside a riveted stainless barrel that shrugs off splash and mild washdown better than painted mini cylinders.
Expect about 94 N of practical push once you apply a sensible design margin to the 157 N rating. Anti-impact pads, fixed at both stroke ends, take the sting out of arrivals at 30-800 mm/s, and the built-in magnet means sensor-ready - CMSG, DMSG and EMSG switches clip straight onto the barrel, no special-order piston required.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X200-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X200-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 200 mm |
| Acting type | Double acting, adjustable stroke |
| 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 | Fixed anti-impact bumper pads |
| 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X200-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X200-50S Is Used
Changeover clamp
Fixture clamps re-tune at changeover: back the screw out, reset the 50 mm window to the new part height, lock it and run.
Glue-dab press head
A glue head dabs closure flaps with 157 N available at 0.5 MPa, the stop screw fixing how far the head reaches into the carton.
Stamp-depth setting
A batch coder's stamp pad presses to a depth trimmed within the 50 mm window, keeping print depth consistent across film rolls.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X200-50S the Right Cylinder?
Downsize to 16 mm (100.5 N at 0.5 MPa) for lighter work or up to 25 mm (245.3 N) if your fixture is stiffer. Choose FA for flange mounting, LB for foot, and I or Y knuckles at the rod. The adjuster is a mechanical end stop, never a position lock - under lost air the piston keeps drifting, so rely on external stops to retain a load. Long 200 mm strokes call for a guided tool so the rod sees thrust, not bending.
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 Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X200-50S FAQ
Rating at 0.5 MPa is 157 N push and 131.9 N pull, rising to 219.8 N and 184.7 N at 0.7 MPa; 1.0 MPa gives a theoretical 32 kgf. The port is 1/8", rod thread M8x1.25, extend stroke adjustable inside the 50 mm window. Apply a design margin - roughly 94 N of practical push - and stay within 0.15-1.0 MPa (22-145 psi).
FA flange, LB foot, plus I or Y rod knuckles cover the fixturing options. Load retention is different: the stop screw is a mechanical end stop for the extend stroke, so with air lost the piston drifts - use external stops or a brake to hold the load.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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