Airtac MDJ Adjustable Cylinder MDJ25X20-20S
The AirTAC Airtac MDJ Adjustable Cylinder MDJ25X20-20S is a genuine MD multi-mount cylinder (adjustable stroke), 25 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 245.4 N of push force at 0.5 MPa. A bumper cushions the impact.
- TypeMulti-mount, adjustable stroke
- SeriesMD (standard)
- Bore25 mm
- Push thrust @0.5 MPa245.4 N
- Operating pressure0.15 - 1.0 MPa (22 - 145 psi)
- Port sizeM5x0.8
- CushionBumper
- MagnetWith magnet (sensor-ready)
- ThreadPT
- 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 MDJ Adjustable Cylinder MDJ25X20-20S
The AirTAC MDJ25X20-20S is a genuine AirTAC multi-mount cylinder, a compact square-body double-acting cylinder that can be fixed from 6 directions - front, back, left, right, top and bottom - and mounted side by side to save space. The 25 mm bore with 20 mm base stroke plus a 20 mm adjustable-stroke range suits fixture work where the end of stroke must be tuned. At 0.5 MPa the bore gives a theoretical push force of about 245.4 N (pull side about 206.2 N), with a bumper providing the cushion.
This is a genuine AirTAC part in the standard MD family, so the rod is free to rotate; choose the MK no-rotating family where rotation must be prevented. The trailing S means this cylinder is supplied with a magnet, and switch slots run around the body for position sensing. Ports are PT (M5x0.8 on this bore). We confirm dimensions and sizing from the datasheet on request.
Airtac MDJ Adjustable Cylinder MDJ25X20-20S Technical Specifications
| Model | Airtac MDJ Adjustable Cylinder MDJ25X20-20S |
|---|---|
| Type | Multi-mount cylinder, adjustable stroke |
| Series | MD (standard) |
| Bore | 25 mm |
| Push thrust @0.5 MPa | 245.4 N |
| Port size | M5x0.8 (PT thread) |
| Magnet | With magnet (S) |
| Fluid | Air, filtered to 40 um |
|---|---|
| Operating pressure | 0.15 - 1.0 MPa (22 - 145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature | -20 to 70 C |
| Speed range | 30 - 500 mm/s |
| Cushion | Bumper |
| Mounting | Fix from 6 directions; mountable side by side |
Specifications follow the official AirTAC MD/MK multi-mount data. The front cover and piston are short, so avoid an over-long stroke. An optional high-temperature seal material extends the range to 0 to 150 C. Overall dimensions vary per stroke and allowable side-load is published as curves — ask us and we confirm from the datasheet.
How to choose
Select the 25 mm bore where you need roughly 245.4 N of theoretical push force at 0.5 MPa. The MDJ version is double acting with an adjustable stroke: 20 mm base plus a 20 mm adjustable range, inside a bore 25 double-acting table that runs up to 60 mm. Favor the shortest stroke that does the job - the short cover design cautions against over-long strokes. If the rod must not rotate, move to the MK family instead. This SKU ends in S, so the magnet is included; S-free SKUs are supplied without. Thread is PT as shown, with G available on request. Side-load capability and exact dimensions come from the datasheet - ask us to confirm.
Applications
Pick-and-place grip
Fix the body from the side of a small pick-and-place head and use the magnet to sense end positions while the 245.4 N push force grips light parts.
Lift-and-lower ejection
Mount bottom-up under a chute so the short 20 mm stroke, extended by the 20 mm adjustable range, lifts or ejects parts a precise distance.
Machine tool stopper
Fix the square body from the top of a fixture as a retractable stopper in a machining cell, with the bumper absorbing contact each cycle.
FAQ
What is the difference between MDJ25X20-20S and the MK version of the same size?
MDJ is the standard MD family with an adjustable stroke: double acting, and the rod is free to rotate. The MKJ equivalent is the no-rotating family, where a plate, bushing and fixed rod stop the rod from turning. Operating pressure and thrust at a given bore are similar, so the choice is whether you need rotation prevented.
Is the 20 mm stroke the only stroke I can use?
The base stroke of this SKU is 20 mm plus a 20 mm adjustable range. If you need a different base stroke, the bore 25 double-acting table runs up to 60 mm, but keep the stroke short where possible because the short cover design cautions against over-long strokes. Exact dimensions are per stroke - we will confirm them from the datasheet.