Airtac MDD Multi-position Double Rod Cylinder MDD20X25S
The AirTAC Airtac MDD Multi-position Double Rod Cylinder MDD20X25S is a genuine MD multi-mount cylinder (double rod), 20 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 157.1 N of push force at 0.5 MPa. A bumper cushions the impact.
- TypeMulti-mount, double rod
- SeriesMD (standard)
- Bore20 mm
- Push thrust @0.5 MPa157.1 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 MDD20X25S
The MDD20X25S is a compact square-body multi-mount cylinder with a rod on both sides of the piston, allowing work at either end. The body fixes from six directions - front, back, left, right, top and bottom - and cylinders mount side by side to save space, with magnetic-switch slots around the body. With a 20 mm bore and 25 mm stroke, this double-acting unit gives a theoretical push force of about 157.1 N at 0.5 MPa (pull side about 131.9 N), cushioned by a bumper, on air filtered to 40 um at 0.15-1.0 MPa.
This is a genuine AirTAC part in the standard MD family (the MK family is the no-rotating version). The trailing S means this SKU is built with a magnet, so reed or solid-state switches can detect piston position in the body slots; the no-S version is available without. We confirm dimensions and sizing from the datasheet on request.
Airtac MDD Multi-position Double Rod Cylinder MDD20X25S Technical Specifications
| Model | Airtac MDD Multi-position Double Rod Cylinder MDD20X25S |
|---|---|
| Type | Multi-mount cylinder, double rod |
| Series | MD (standard) |
| Bore | 20 mm |
| Push thrust @0.5 MPa | 157.1 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
Bore sets the thrust: a 20 mm bore delivers about 157.1 N push at 0.5 MPa (131.9 N pull), so size the bore to your load. Pick MD when rod rotation is acceptable and MK when it is not; this double-rod variant acts from both ends. Bore 20 takes strokes up to 60 mm, but the covers are short - avoid an over-long stroke. This S-suffix SKU includes the magnet; drop the S if you do not need switch detection. Thread is PT by default or G on request. Side-load figures come from the datasheet - confirm with us.
Applications
Pick-and-place with position feedback
The built-in magnet and switch slots let the controller confirm extend and retract strokes while the double-rod output grips or places small parts from either end.
Symmetric workpiece clamping in fixtures
Two rods from one cylinder clamp a part on both sides in a machining or assembly jig, with side-by-side mounting keeping the fixture base compact.
Indexing pushers on transfer lines
A 25 mm stroke advances and retracts small pallets or parts between stations, with end-of-stroke detection via the magnetic switches for reliable sequencing.
FAQ
What does the S at the end of MDD20X25S mean?
The trailing S indicates this cylinder is built with a magnet in the piston. Combined with the switch slots around the body, it allows position-sensing switches to detect end-of-stroke; the same model without the S, MDD20X25, is supplied without a magnet.
Can I use a long stroke on this 20 mm bore body?
Bore 20 is catalogued up to 60 mm stroke, but the multi-mount covers are short, so an over-long stroke puts added stress on the rod. Keep strokes modest for the duty, and confirm exact dimensions and any side-load limits from the datasheet.