Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-50S is a genuine double acting, adjustable stroke 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.
- BoreØ20 mm
- Stroke100 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 MAJ20X100-50S
The MAJ20X100-50S pairs a 100 mm nominal stroke with a 50 mm trim window, so an external stop screw lets you wind the extend end anywhere between 50 and 100 mm on the machine. Double-acting air drives both directions, and at 0.5 MPa the bore 20 chamber pushes 157 N and pulls 132 N.
Under the covers sits a riveted stainless-steel round barrel with an 8 mm hard-chrome rod, a build that tolerates washdown splash and humid air far better than painted minis. Keeping a 40% reserve off the 157 N push rating leaves about 94 N for real work, and in a vertical mount the same figure lifts roughly 8 kg with a 2:1 margin. Fixed bumper pads soften each stroke end, and the built-in magnet drops CMSG or DMSG switches on without a special-order piston.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 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 MAJ20X100-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 MAJ20X100-50S Is Used
Carton flap tucker
On a small case sealer, the trimmed 50-100 mm reach folds closing flaps; 157 N at 0.5 MPa seats them without crushing the board.
Bottle reject pusher
Sweeps under-filled bottles off a filling-line transfer plate; the stainless barrel and chrome rod laugh at syrup splash and rinse water.
Welding-jig fixture clamp
Holds thin aluminium brackets against a weld fixture, working on about 94 N of the rating so clamping never bottoms out the regulator.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X100-50S the Right Cylinder?
Size against neighbours: the MAJ16 pushes 100.5 N at 0.5 MPa if the load stays under about 60 N in practice, while the MAJ25 steps up to 245.3 N for heavier ejects; all use a 1/8" port. The stop screw is a mechanical end stop only - if air is lost the rod drifts, so fit a blocking valve or external clamp where a held position matters. FA flange or LB foot mounts plus I and Y rod knuckles cover the usual fixings, and with 100 mm of travel on an 8 mm rod keep side load low and align the coupling carefully.
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 MAJ20X100-50S FAQ
At 0.5 MPa it pushes 157 N and pulls 132 N; at 0.7 MPa those rise to 220 N and 185 N, with a theoretical maximum of 32 kgf at 1.0 MPa. It runs on filtered air at 0.15-1.0 MPa (22-145 psi), survives 1.5 MPa (215 psi) proof pressure, works from -20 to +70 C at 30-800 mm/s, and takes a 1/8" port.
No. The fixed anti-impact pads only decelerate the piston near each stroke end; they cannot be tuned like an air cushion, which is a facility of the MACJ family. Mount with FA flange or LB foot hardware and use the stop screw to set the extend end anywhere in the 50-100 mm window.
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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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