Airtac MDJ Adjustable Cylinder MDJ25X50-40
The AirTAC MDJ Adjustable Cylinder MDJ25X50-40 is a genuine MD multi-mount cylinder (double rod, 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, double rod, 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 MDJ25X50-40
The MDJ25X50-40 is a 25 mm bore, 50 mm stroke adjustable-stroke multi-mount cylinder from AirTAC. As a multi-mount body it can be fixed from 6 directions - front, back, left, right, top and bottom - and multiple units can be mounted side by side to save space, with magnetic-switch slots formed around the body. This double-acting version develops about 245.4 N of theoretical push thrust at 0.5 MPa, and the cushion is a bumper. The adjustable-stroke design lets you fine-set the working stroke for precise end positions.
This is a genuine AirTAC part in the standard MD family, where rod rotation is not restricted (choose the MK family if you need a no-rotating rod). This SKU is built without a magnet, so it does not carry the trailing S. Medium is air filtered to 40 um; operating pressure is 0.15-1.0 MPa (22-145 psi); speed is 30-500 mm/s; temperature is -20 to 70 C. Dimensions and sizing for this stroke are per the datasheet - we confirm them on request.
Airtac MDJ Adjustable Cylinder MDJ25X50-40 Technical Specifications
| Model | Airtac MDJ Adjustable Cylinder MDJ25X50-40 |
|---|---|
| Type | Multi-mount cylinder, double rod, 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
Bore sets thrust: this 25 mm bore gives about 245.4 N theoretical push at 0.5 MPa - step up to 32 mm for about 402.1 N or down to 20 mm for about 157.1 N. MD keeps rotation allowed; MK prevents it. Acting type: this is a double-acting adjustable-stroke (MDJ) unit; single push (MSD), single pull (MTD), double rod (MDD) and fixed-stroke MD are the alternatives. The 50 mm stroke sits inside the bore 25 table (up to 60 mm), with the 40 mm adjustable range shown in the code added on top - confirm exact adjustment from the datasheet. Keep strokes conservative: the short cover warns against over-long strokes, and side-load limits should be confirmed with us. Magnet is optional (trailing S); this SKU has none. Port is M5x0.8 with PT thread, or choose G.
Applications
Small-parts clamping on fixtures
A compact square body fixed from the top or side holds a clamp pad over a small part in a machining fixture. The adjustable stroke lets the operator set exact clamp travel, and side-by-side mounting fits several clamps in a tight envelope.
Pick-and-place part transfer
Mounted horizontally between station plates, the cylinder advances a gripper a set 50 mm to move small components between nests. The 25 mm bore push at 0.5 MPa is enough for light parts, and the adjustable range trims the end position.
Conveyor part stopper gate
Fixed to the conveyor frame from any of the 6 directions, the cylinder raises and lowers a stop blade to hold or release parts at a workstation. The bumper cushion softens the stop, and the magnetic-switch slots confirm up and down positions.
FAQ
Why choose the MDJ25X50-40 over a fixed-stroke MD25X50?
The MDJ is the adjustable-stroke member of the MD family: it adds the adjustable range shown in the code on top of the 50 mm base stroke, so you can fine-set the end position without swapping cylinders. Both are double acting; the fixed MD25X50 is the choice when stroke never needs trimming.
Can I use a long stroke to reach across my machine with this bore?
Work within the stroke table for the bore - for 25 mm bores the double-acting stroke goes up to 60 mm - and note the short cover cautions against over-long strokes. For reaching beyond that, or for any side-load on the rod, confirm the application with us; limits and dimensions come from the datasheet.