Airtac MDJ Adjustable Cylinder MDJ20X60-40S
The AirTAC MDJ Adjustable Cylinder MDJ20X60-40S is a genuine MD multi-mount cylinder (double rod, 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, double rod, 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 MDJ20X60-40S
The MDJ20X60-40S is an AirTAC MD-series multi-mount cylinder, a compact square-body actuator that can be fixed from 6 directions (front, back, left, right, top and bottom) and mounted side by side to save space. This adjustable-stroke, double-acting version carries a 20 mm bore with a 60 mm stroke and an additional 40 mm adjustable range, giving about 157.1 N of theoretical push thrust at 0.5 MPa for light clamping and positioning work. Cushioning is by bumper, and magnetic-switch slots surround the body.
This is a genuine AirTAC part. The MD family is the standard multi-mount design, while the MK family adds a no-rotating plate to stop rod rotation. As the SKU shows, this model includes a magnet. We can confirm dimensions and sizing from the datasheet on request.
Airtac MDJ Adjustable Cylinder MDJ20X60-40S Technical Specifications
| Model | Airtac MDJ Adjustable Cylinder MDJ20X60-40S |
|---|---|
| Type | Multi-mount cylinder, double rod, 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
Choose MD when rod rotation is acceptable, or an MK model when it must be prevented. Acting type: this MDJ is double acting with an adjustable stroke, adding a 40 mm adjustable range on top of the 60 mm stroke; the 60 mm stroke is at the top of the bore 20 table, and the short cover cautions against an over-long stroke, so verify the layout first. The trailing S means this SKU includes a magnet; thread is PT, with G offered as an option. Side-load capacity depends on the installation, so route that question to us.
Applications
Stopper gating
Fix the square body from the front of a conveyor line and extend the bumper-cushioned rod as a stopper, tuning the adjustable range to suit different pallet sizes.
Pick-and-place transfer
Mount cylinders side by side along a transfer rail and use the 60 mm stroke plus adjustable range to set exact push-off travel for each pick-and-place station.
Machine adjustments
Fix the body top or bottom on a small machine and use the 40 mm adjustable range for in-service setting changes, such as gate position or part present stops.
FAQ
What does the '-40S' in MDJ20X60-40S mean?
MDJ identifies the adjustable-stroke version of the MD double-acting multi-mount cylinder, 20 is the bore in mm, 60 is the stroke in mm, -40 is the 40 mm adjustable range added on top of the stroke, and the trailing S shows the cylinder includes a magnet. Thread is PT by default, with G available as an option.
Can I run this cylinder without extra lubrication?
Yes, the MD multi-mount design offers high guide precision and runs on air filtered to 40 um without added lubricant. Keep the 60 mm stroke within the bore 20 table, watch the short-cover caution against over-long strokes, and confirm side-load limits and exact dimensions from the datasheet.