Airtac MDJ Adjustable Cylinder MDJ25X25-20
The AirTAC Airtac MDJ Adjustable Cylinder MDJ25X25-20 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
- MagnetWithout magnet
- 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 MDJ25X25-20
The MDJ25X25-20 is an AirTAC adjustable-stroke multi-mount cylinder with a 25 mm bore, 25 mm base stroke and a 20 mm adjustable range, giving a tunable effective stroke without changing the cylinder. The square body can be fixed from six directions (front, back, left, right, top, bottom) and mounted side by side to save space, with magnetic-switch slots around the body. In double-acting use it produces about 245.4 N of theoretical push force at 0.5 MPa (206.2 N on the pull side) at 30-500 mm/s, cushioned by a bumper. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi) and from -20 to 70 C (0 to 150 C only with the optional high-temperature seal material), with M5x0.8 ports in PT thread per this SKU.
This is a genuine AirTAC part in the standard MD family, where rod rotation is not prevented; the MK family is the no-rotating alternative. This SKU carries no magnet suffix, so it is supplied without a magnet - the S-suffixed variant adds one. Typical materials are an aluminium-alloy body, covers and piston, a stainless or S45C rod, NBR seals and a TPU bumper. We confirm exact dimensions, weights and sizing against the datasheet on request.
Airtac MDJ Adjustable Cylinder MDJ25X25-20 Technical Specifications
| Model | Airtac MDJ Adjustable Cylinder MDJ25X25-20 |
|---|---|
| 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 | Without magnet |
| 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
Match the bore to your thrust need: at 0.5 MPa this 25 mm bore yields 245.4 N theoretical push (206.2 N pull) double acting. Choose MD (rotation allowed) versus MK (no-rotating), and the acting type - this MDJ is double acting with a 20 mm adjustable range on top of the 25 mm stroke. Keep the total within the bore 25 stroke table of up to 60 mm and avoid over-long strokes given the short covers; ask us about side-load capability. Select the magnet (S suffix) if needed and the thread, PT by default or G.
Applications
Height-setting eject or lift positioner
The 20 mm adjustable range sets different lift or eject heights on small assembly stations, with six-direction mounting wherever the machine face allows.
Product stopper along conveyor edges
Cylinders mounted side by side along a line act as tunable stops, the bumper absorbing arrivals and the adjustable stroke matching product sizes.
Test-rig jig actuation
Adjustable stroke lets lab and test jigs vary travel between trials without changing hardware, while the compact 25 mm body fits dense fixture layouts.
FAQ
How does the 20 mm adjustable range work on the MDJ25X25-20?
The cylinder has a 25 mm base stroke, and the -20 indicates an additional 20 mm adjustable range, letting you tune the effective end-of-stroke position across that extra travel. Adjustable MDJ/MKJ models are offered with 10, 20 or 30 mm ranges.
Can I use a long stroke with this 25 mm cylinder?
The multi-mount design uses short covers, so over-long strokes are best avoided. The bore 25 double-acting table goes up to 60 mm; for this adjustable model keep the 25 mm base stroke plus the 20 mm adjustable range sensible for the duty, and confirm exact dimensions and side-load limits from the datasheet.