
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X160-10S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 160mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A riveted round-body pneumatic mini cylinder, the MAJ20X160-10S runs double-acting and lets an external stop screw shave up to 10 mm off the 160 mm extend stroke without touching the air supply. At 0.5 MPa the 20 mm bore pushes 157 N and pulls 131.9 N, a class that suits light clamping and small part positioning. AirTAC builds it from a stainless-steel barrel with a 20 um hard-chrome plated rod, so damp or lightly washed-down corners of a plant will not eat the tube.
Grease-storing two-way piston seals keep friction low across the 30-800 mm/s speed band, and fixed anti-impact bumpers soften both stroke ends - these decelerate only, they are not adjustable air cushions. At 0.5 MPa, plan on roughly 94 N of useful force (about 60% of the rating) rather than the full 157 N when sizing the job. Ports are 1/8", the rod thread is M8x1.25, and the magnet that ships as standard drops CMSG, DMSG or EMSG switches straight on.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X160-10S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 160 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. |
| ×160 | 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.
Kicks rejected caps off a bottling line check station, with the 10 mm trim letting operators fine-tune the push-off point on the fly.
Tucks the end flap of a small carton before gluing; 157 N at 0.5 MPa is ample for light board at end of line.
Positions a lab carousel between two fixed stops, using the standard magnet and an EMSG switch to confirm home.
If 157 N at 0.5 MPa leaves too little margin, step up to the 25 mm bore (245.3 N push) in the same MAJ family; if the load is under 100 N, the 16 mm bore at 100.5 N is cheaper and smaller. The -10 window suits fine positioning where the stop screw only makes a short trim. Mount with the FA flange or LB foot and add an I or Y rod knuckle where the load must pivot; the magnet is built in, so position sensing is a snap-on job. Note the adjuster acts as an end stop only - with air gone, the piston is free to move, so it will not park a load mid-travel.
Quick checklist
At 0.5 MPa it pushes with 157 N and pulls with 131.9 N. At 0.7 MPa those rise to 219.8 N push and 184.7 N pull. The theoretical maximum at 1.0 MPa is 32 kgf. Working pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), and speed runs 30-800 mm/s.
An external stop screw limits how far the rod extends, trimming the 160 mm stroke by up to 10 mm without disassembly. It is a mechanical end stop, not a mid-stroke lock, so the piston can still drift if air pressure is lost. Retraction always uses the full stroke.
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