Airtac MDJ Adjustable Cylinder MDJ20X35-20S
The AirTAC Airtac MDJ Adjustable Cylinder MDJ20X35-20S is a genuine MD multi-mount cylinder (adjustable stroke), 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, adjustable stroke
- 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 MDJ Adjustable Cylinder MDJ20X35-20S
The MDJ20X35-20S is a multi-mount cylinder that fixes from 6 directions - front, back, left, right, top and bottom - so units can be mounted side by side to save space wherever machine real estate is tight. This adjustable-stroke MDJ variant is double acting with a 20 mm bore, a 35 mm base stroke and a 20 mm adjustable range, producing about 157.1 N theoretical push at 0.5 MPa. Cushioning is by bumper, and magnetic-switch slots circle the body for position feedback.
This is a genuine AirTAC part from the MD family - the standard multi-mount line, where rod rotation is allowed by design (use the MK family when rotation must be prevented). The trailing S in the SKU means a magnet is included. The medium is air filtered to 40 um and operating pressure is 0.15-1.0 MPa; we confirm dimensions and sizing from the datasheet on request.
Airtac MDJ Adjustable Cylinder MDJ20X35-20S Technical Specifications
| Model | Airtac MDJ Adjustable Cylinder MDJ20X35-20S |
|---|---|
| Type | Multi-mount cylinder, adjustable stroke |
| 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
Start with thrust: the 20 mm bore gives about 157.1 N theoretical push at 0.5 MPa in this double-acting MDJ. Pick MD if rod rotation is acceptable, MK if it must be prevented. Acting types in the range are double acting, single-acting push (MSD), single-acting pull (MTD), double rod (MDD) and adjustable-stroke (MDJ).
The base stroke is 35 mm with a 20 mm adjustable range on top; bore 20 double-acting strokes run up to 60 mm in the standard table. The cover on this body is short, so avoid stretching to an over-long stroke, and route any side-load requirement to us to confirm from the datasheet. Trailing S means the magnet is included, and the port thread is PT by default with G as an option.
Applications
Gate and stopper on conveyors
Mounted beneath or beside a conveyor line, the cylinder raises and lowers a stopper gate, with the magnet enabling position detection at both ends.
Workpiece eject and reject
Units fixed from the side push off-spec parts off a line; the 20 mm adjustable range sets the eject reach without mechanical rework.
Assembly station indexing
Side-by-side multi-mount bodies index small assemblies between steps, each with about 157.1 N of push at 0.5 MPa and bumper cushioning to settle the part.
FAQ
How much force does the MDJ20X35-20S produce, and at what pressure range?
At 0.5 MPa the 20 mm double-acting bore gives about 157.1 N theoretical push. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure is 1.5 MPa, and the cushion is a bumper rather than an air cushion.
What does the -20 in the model code indicate, and does the S matter?
The -20 is the adjustable range: 20 mm of extra, tunable stroke on top of the 35 mm base stroke, a feature unique to the MDJ and MKJ variants. The S confirms a magnet is fitted; without the S the cylinder would be supplied without one.