Airtac MDJ Adjustable Cylinder MDJ20X70-20
The AirTAC Airtac MDJ Adjustable Cylinder MDJ20X70-20 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
- 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 MDJ20X70-20
The MDJ20X70-20 is an AirTAC multi-mount cylinder with an adjustable stroke: a compact square body you can fix from 6 directions (front, back, left, right, top or bottom) and mount side by side to save space. This unit is double acting with a 20 mm bore, a 70 mm base stroke and a 20 mm adjustable range, giving about 157.1 N of theoretical push at 0.5 MPa. Cushioning is a bumper, and magnetic-switch slots run around the body.
This is a genuine AirTAC part in the standard MD family; the MK family adds a no-rotating plate for jobs where the rod must not turn. As coded, this SKU is without a magnet (the S suffix marks a magnet-equipped version). It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), from -20 to 70 C (up to 150 C only with the optional high-temperature seal material). We confirm dimensions and sizing from the datasheet on request.
Airtac MDJ Adjustable Cylinder MDJ20X70-20 Technical Specifications
| Model | Airtac MDJ Adjustable Cylinder MDJ20X70-20 |
|---|---|
| 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 | 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
Pick the 20 mm bore when you need about 157.1 N of push at 0.5 MPa (the pull side gives less). Choose MD when rod rotation is allowed, or MK when it must be prevented. Acting types are double acting, single push (MSD), single pull (MTD), double rod (MDD) and adjustable stroke (MDJ, this model). Strokes stay short on this compact body, so check an over-long stroke against the datasheet before committing; the MDJ adds a 10, 20 or 30 mm adjustable range on top of the base stroke, and this SKU carries the 20 mm range. Select the magnet with the S suffix and the thread as PT or G.
Applications
Press-fit verification
Use the 20 mm adjustable range to dial in a light pressing or seating move on small assemblies, with the bumper easing the end of stroke.
Part diverting
Fix the body to the frame from the bottom or side and push parts off a conveyor; the short square body tucks between rollers.
Test-rig actuation
Adjust the effective stroke between rigs without re-plumbing: the square body mounts from any of 6 faces in tight test fixtures.
FAQ
How do I choose between MDJ and the other MD variants?
MDJ is the adjustable-stroke variant: it adds a 10, 20 or 30 mm adjustable range on top of the base stroke, which the -20 here sets at 20 mm. Plain MD is fixed-stroke double acting, MSD is single-acting push, MTD is single-acting pull and MDD is double rod.
Where can I mount it and what should I confirm first?
The body fixes from 6 directions (front, back, left, right, top or bottom) and units mount side by side to save space. Overall dimensions are per stroke and side-load limits are not published as a general figure, so confirm both from the datasheet for your fixture.