Airtac MDJ Adjustable Cylinder MDJ25X40-30S
The AirTAC Airtac MDJ Adjustable Cylinder MDJ25X40-30S 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 MDJ25X40-30S
The MDJ25X40-30S is an adjustable-stroke, double acting AirTAC multi-mount cylinder with a 25 mm bore, 40 mm main stroke and an extra 30 mm adjustable range. The multi-mount body fixes from six directions (front, back, left, right, top and bottom), letting you mount cylinders side by side to save space, with magnetic-switch slots around the body and high guide precision. At 0.5 MPa the 25 mm bore delivers about 245.4 N of theoretical push force, with cushioning by a bumper rather than an air cushion.
This is a genuine AirTAC part from the MD family, the standard multi-mount where piston rotation is not prevented - choose the MK family if you need a non-rotating rod. The trailing S means this SKU comes WITH a magnet for magnetic-switch detection. Thread is PT (M5x0.8 on this bore), with G available as an option. We confirm exact dimensions and sizing from the AirTAC datasheet on request before ordering.
Airtac MDJ Adjustable Cylinder MDJ25X40-30S Technical Specifications
| Model | Airtac MDJ Adjustable Cylinder MDJ25X40-30S |
|---|---|
| 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
The 25 mm bore gives about 245.4 N theoretical push at 0.5 MPa in double acting use - size it against your load. MD is the standard multi-mount (rotation allowed); MK versions prevent rod rotation. This model is adjustable-stroke double acting: 40 mm main stroke plus a 30 mm adjustable range. Double acting strokes for the 25 mm bore run up to 60 mm; the short-cover design cautions against an over-long stroke. The trailing S includes the magnet, so switches can be sensed in the body slots. Thread is PT as shown, with G selectable. Side-load ratings and stroke-specific dimensions come from the datasheet - ask us.
Applications
Indexing dial positioning
Fix the body from any of six directions on an indexing dial, use the 30 mm adjustable range to set the stop angle travel, and sense position via the built-in magnet.
Pick-and-place end stops
Side-by-side mounting keeps several compact cylinders in a tight pick-and-place gantry; the magnet supports position sensing at each end-of-stroke without extra switches on the frame.
Compact small-parts clamp
About 245.4 N push at 0.5 MPa from the 25 mm double acting bore clamps small parts in a tight fixture, with the 30 mm adjustment absorbing fixture-to-fixture setup differences.
FAQ
What is the difference between MDJ25X40-30S and MDJ25X40-30?
Only the magnet. The trailing S means the 30S version is supplied WITH a magnet for magnetic-switch detection, while the plain MDJ25X40-30 ships without. Bore, stroke, adjustable range, acting type and PT thread are otherwise the same.
How do I mount a multi-mount cylinder in a tight fixture?
The square body fixes from six directions - front, back, left, right, top and bottom - so you can pick the face that fits and mount cylinders side by side to save space. Stroke-specific overall dimensions and side-load limits should be confirmed from the datasheet before final fixture design.