Airtac MDD Multi-position Double Rod Cylinder MDD25X20S
The AirTAC Airtac MDD Multi-position Double Rod Cylinder MDD25X20S is a genuine MD multi-mount cylinder (double rod), 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
- 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 MDD Multi-position Double Rod Cylinder MDD25X20S
The MDD25X20S is an AirTAC multi-mount cylinder with a compact square body that fixes from six directions - front, back, left, right, top and bottom - so cylinders mount side by side to save space. This double-rod, double-acting version has a rod on both covers for work at either end; the 25 mm bore gives a theoretical push force of about 245.4 N at 0.5 MPa over a 20 mm stroke. Cushioning is by bumper, not by air, and magnetic-switch slots around the body take position sensors.
This is a genuine AirTAC part in the standard MD family (MK is the no-rotating alternative). The trailing S means this SKU is built with a magnet for switch detection; the non-S version omits it. We can confirm exact dimensions and sizing for your layout from the datasheet on request.
Airtac MDD Multi-position Double Rod Cylinder MDD25X20S Technical Specifications
| Model | Airtac MDD Multi-position Double Rod Cylinder MDD25X20S |
|---|---|
| Type | Multi-mount cylinder, double rod |
| 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
Size the bore first: this 25 mm bore gives about 245.4 N theoretical push at 0.5 MPa. Then pick the family - MD allows rod rotation, MK prevents it. Acting options are double, single push (MSD), single pull (MTD), double rod (MDD, as here) and adjustable-stroke (MDJ). Bore 25 strokes run to 60 mm; 20 mm keeps the cylinder compact, so resist over-long strokes. The trailing S makes this the magnet-equipped SKU; the plain MDD25X20 is the non-magnetic equivalent. Threads are PT as standard with a G option - check the code. For side-load limits and per-stroke dimensions, ask us for the datasheet.
Applications
Two-sided press fit
The double rods of the MDD25X20S apply about 245.4 N from either cover, pressing or seating small parts in a compact station where the body mounts from six directions.
Position-sensed workholding
The built-in magnet works with the body's magnetic-switch slots to signal clamp and release states in a fixture, with cylinders parked side by side to save panel space.
Ejector in a nest
A 20 mm stroke pushes finished parts up or out of a nesting jig; the 6-way mounting lets the cylinder sit under or beside the nest wherever space allows.
FAQ
What does the S in MDD25X20S mean?
The trailing S indicates this cylinder is supplied with a magnet, so magnetic switches can detect rod position in the slots around the body. The equivalent code without the S, MDD25X20, is the same double-rod, 25 mm bore, 20 mm stroke cylinder but without the magnet.
How is this cylinder mounted in tight fixtures?
The multi-mount body can be fixed from six directions - front, back, left, right, top and bottom - and units can be mounted side by side on shared surfaces to save space. Note the short covers favor short strokes like this 20 mm, and side-load ratings and exact dimensions should be confirmed from the datasheet.