
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X110-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 110mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
The MAJ20X110-20S pairs a 110 mm extend stroke with a 20 mm on-site trim window: turn the external stop screw and the piston lands anywhere in that band, no shims or re-ordering needed. At 0.5 MPa the 20 mm bore pushes 157 N, so budget roughly 94 N for the real work and the cylinder keeps a healthy margin.
The stainless round barrel rolled onto aluminium covers and the hard-chrome plated 8 mm rod shrug off coolant mist and washdown splash, an edge painted-steel minis rarely match. A fixed anti-impact pad softens each stroke end (deceleration only, not an adjustable air cushion), the built-in magnet accepts CMSG / DMSG / EMSG switches, and air feeds through a 1/8" port shared by every bore from 20 to 40 mm.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X110-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 110 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.
| 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.
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×110 | 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.
Ejects mislabelled cartons from a 400 mm belt at mid-shift setpoints; the 20 mm stop window lets operators retune push depth after a film change.
Positions 110 mm tray stations in lab analysers; a DMSG switch on the standard magnet confirms each seat before the next test starts.
Clamps small aluminium housings in a drilling jig with about 94 N of usable effort at 0.5 MPa, releasing instantly on exhaust.
Sizing check: bore 16 tops out at 100.5 N push at 0.5 MPa, so step up to this 20 mm bore when you need 157 N; if the load grows past about 200 N, bore 25 offers 245.3 N in the same MA family. Keep side loads off the 8 mm rod on this 110 mm travel - guide the part externally if the stroke is long.
FA flange and LB foot mounts fit the round body, I and Y rod knuckles connect the tooling, and the standard magnet accepts CMSG / DMSG / EMSG switches. One caution: the trim screw sets extend position only, so it cannot carry a hanging load once supply air drops.
Quick checklist
At 0.5 MPa: 157 N extend and 131.9 N retract. At 0.7 MPa: 219.8 N extend and 184.7 N retract. Theoretical maximum at 1.0 MPa is 32.0 kgf for this 20 mm bore. Running pressure spans 0.15-1.0 MPa (22-145 psi).
An external stop screw shortens the 110 mm extend stroke by up to 20 mm on site - just turn the screw to the position you need. It acts only on extension, it is a mechanical end stop rather than an air cushion, and it will not hold position if air pressure is lost.
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