
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm 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.
Machines that occasionally need a shorter reach - a gate nudger, a carton stop, a divider blade - suit the MAJ25X200-50S, whose 50 mm adjust band lets maintenance retune extend travel on the spot. Double-acting bore 25 output reaches 245 N (25 kgf) push at 0.5 MPa, so light pressing and pushing tasks stay comfortably inside range.
Its riveted stainless round body shrugs off washdown splashes that would eat a painted mini, and the hard-chrome plated 10 mm rod keeps seal wear low over millions of cycles. Fixed bumper pads take the sting out of stroke ends without acting as an air cushion - that cushioned behaviour belongs to the MACJ family. A magnet is fitted as standard, so CMSG or EMSG switches mount straight onto the barrel. For sizing, expect about 147 N of usable push at 0.5 MPa, or roughly 12 kg of vertical lift at a 2:1 margin.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X200-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 200 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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). |
|---|---|
| 25 | 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.
A bottling hall index gate stops PET trays for date coding; the 50 mm adjust window absorbs tray-size changes without swapping cylinders.
Sliding safety-guard latches need a firm pull as well as push - retract force at 0.5 MPa is 206 N, ample for a latch hook on a press enclosure.
Light pressing of test coupons at a working force near 147 N keeps results repeatable, and the stainless barrel tolerates lab humidity year round.
Bore 20 gives 157 N at 0.5 MPa if the load is light; bore 32 provides 402 N when the tooling weighs more. The 50 mm window is set with an external stop screw - it shortens extend only, never lengthens beyond 200 mm, and it is a positional stop rather than a load brake, so do not rely on it to carry weight if air fails. Mount with the FA flange or LB foot and add an I or Y knuckle where the tool needs a pivot. Fit a DMSG or CMSG switch for position feedback; the magnet comes standard.
Quick checklist
Bore 25 delivers 245.3 N push and 206.1 N pull at 0.5 MPa, climbing to 343.4 N push and 288.5 N pull at 0.7 MPa; theoretical maximum is 50 kgf at 1.0 MPa. The rod is 10 mm, the air port 1/8", the rod thread M10x1.25, and the pressure range 0.15-1.0 MPa (22-145 psi).
No - every MA-series piston carries a built-in magnet as standard equipment, so CMSG, DMSG and EMSG reed or Hall switches clip onto the stainless barrel without special ordering or a modified piston.
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