
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X60-20S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø25mm bore and 60mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
A 25 mm bore, double-acting round-body mini cylinder whose extend stroke is trimmed on site by an external stop screw anywhere within the ordered 20 mm window (60 mm down to 40 mm). At 0.5 MPa it pushes 245.3 N, so plan real workloads near 147 N to keep a healthy margin. The stainless barrel and 20 um hard-chrome plated rod shrug off mild corrosion and washdown, an edge over painted minis in damp, food or outdoor spots.
Stroke-end impact is softened by fixed anti-impact bumper pads (deceleration only - adjustable air cushioning belongs to the MACJ family). The magnet is built in as standard, so CMSG / DMSG / EMSG switches drop onto the barrel without a special piston. Air supply runs 0.15-1.0 MPa (22-145 psi) at 30-800 mm/s.
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ25X60-20S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 60 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. |
| ×60 | 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.
Clamps small aluminium housings against a drill jig on a benchtop fixture; the 20 mm trim sets contact depth in the field without a new cylinder.
Presses caps onto 50 mL centrifuge tubes at a compact lab filling bench running near 0.4-0.5 MPa.
Kicks misprinted plastic caps off a 200 mm wide conveyor lane; a DMSG switch confirms the extend before the next part arrives.
Compare both directions before committing: the 20 mm bore pushes 157 N at 0.5 MPa and the 32 mm bore reaches 402 N, so 245 N sits squarely in the middle for jigs and light clamping. The stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock - the rod can still drift if air is lost, so add a valve or lock where holding matters. Mounting is FA flange or LB foot, with I / Y rod knuckles available; ports are 1/8" and rod thread M10x1.25. Keep side loads light on the 10 mm rod across the 60 mm span.
Quick checklist
At 0.5 MPa: 245.3 N push and 206.1 N pull. At 0.7 MPa: 343.4 N push and 288.5 N pull. Theoretical peak is 50 kgf at 1.0 MPa. Supply 0.15-1.0 MPa (22-145 psi) of 40 um filtered air at 30-800 mm/s.
No. Fixed anti-impact bumper pads soften the impact at each stroke end, but they decelerate only; adjustable air cushioning is a feature of the AirTAC MACJ family instead.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
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