Airtac MDJ Adjustable Cylinder MDJ10X40-30S
The AirTAC Airtac MDJ Adjustable Cylinder MDJ10X40-30S is a genuine MD multi-mount cylinder (adjustable stroke), 10 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 39.3 N of push force at 0.5 MPa. A bumper cushions the impact.
- TypeMulti-mount, adjustable stroke
- SeriesMD (standard)
- Bore10 mm
- Push thrust @0.5 MPa39.3 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 MDJ10X40-30S
The MDJ10X40-30S is an AirTAC MD-series adjustable-stroke multi-mount cylinder with a 10 mm bore, 40 mm base stroke and an extra 30 mm adjustable range. As a multi-mount body it can be fixed from 6 directions (front, back, left, right, top and bottom) and mounted side by side to save space, with magnetic-switch slots around the body and high guide precision without added lubricant. Double acting with air cushioning replaced by a TPU bumper, it runs at 30-500 mm/s and delivers a theoretical push thrust of 39.3 N at 0.5 MPa on this bore.
This is a genuine AirTAC part. The MD family is the standard multi-mount design, while the MK family is the no-rotating version with a plate and fixed rod that stops the rod turning - this model allows normal rod rotation. The trailing S in the SKU means this unit is built with a position-detecting magnet. The medium is air filtered to 40 um, proof pressure is 1.5 MPa (215 psi), and temperature range is -20 to 70 C (up to 150 C only with the optional high-temperature seal material). We confirm exact dimensions and sizing from the datasheet on request.
Airtac MDJ Adjustable Cylinder MDJ10X40-30S Technical Specifications
| Model | Airtac MDJ Adjustable Cylinder MDJ10X40-30S |
|---|---|
| Type | Multi-mount cylinder, adjustable stroke |
| Series | MD (standard) |
| Bore | 10 mm |
| Push thrust @0.5 MPa | 39.3 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 the 10 mm bore when your clamp or press load fits within its theoretical 39.3 N push thrust at 0.5 MPa (33.0 N on the pull side); larger bores 16-32 give more force if you need it. MDJ gives double acting power in both directions plus an adjustable stroke: air controls where the rod stops within the extra 30 mm range on top of the 40 mm base stroke, ideal for dialing in a repeatable end position. Standard MD allows rod rotation; pick MK if the application must prevent it.
This unit includes the magnet (S suffix) for switch position detection and uses PT thread (G is available as an option) on its M5x0.8 ports for bore 6-25. Keep stroke within the bore's table - the short body cover cautions against over-long strokes on compact multi-mount cylinders. Confirm side-load limits and per-stroke dimensions from the datasheet, or ask us and we will check them for you.
Applications
Adjustable small-parts clamping
Clamps brackets or molded parts on a compact fixture where the 6-direction fixing lets the cylinder bolt in from whichever face is free, and the adjustable range tunes the clamp point after installation.
Product stopper on a line
Stops cartons or components at a workstation; the side-by-side mounting keeps multiple stoppers packed tightly along the conveyor edge, and the bumper cushions each stop.
Pick-and-place lift step
Lifts or ejects small parts between stations, with the magnet (S) signalling end positions to the controller and the adjustable stroke setting the lift height.
FAQ
What does the MDJ10X40-30S code mean?
MDJ is AirTAC's adjustable-stroke multi-mount cylinder (double acting, MD standard family), 10 is the bore in mm, 40 is the base stroke in mm, -30 is the extra adjustable range in mm, and the trailing S means the unit includes a magnet for position-detecting switches. Without the S the same cylinder is supplied without a magnet.
How many ways can I mount this cylinder?
As a multi-mount body it can be fixed from 6 directions: front, back, left, right, top and bottom, and units can sit side by side to save space. Exact per-stroke dimensions and allowable side load are not quoted here - confirm them from the datasheet or ask us.