Airtac MKJ Adjustable Cylinder MKJ20X30-10S
The AirTAC Airtac MKJ Adjustable Cylinder MKJ20X30-10S is a genuine MK 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. As an MK unit a fixed rod stops the piston rod rotating.
- TypeMulti-mount, adjustable stroke
- SeriesMK (no-rotating)
- 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 MKJ Adjustable Cylinder MKJ20X30-10S
The MKJ20X30-10S is an AirTAC MKJ adjustable-stroke, no-rotating multi-mount cylinder with a 20 mm bore, 30 mm stroke and a 10 mm adjustable range. The square body fixes from six directions - front, back, left, right, top and bottom - and can be lined up side by side with matching cylinders to save panel space; magnetic-switch slots run around the body. Double-acting operation on this bore delivers a theoretical push force of 157.1 N at 0.5 MPa with a bumper cushion. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), -20 to 70 C.
This is a genuine AirTAC part. The MK family is the no-rotating version of the multi-mount range, where a plate, brass bushing and fixed rod prevent rod rotation; the MD family is the standard version. The trailing S on this SKU means a magnet is fitted. We confirm dimensions and sizing from the datasheet on request.
Airtac MKJ Adjustable Cylinder MKJ20X30-10S Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ20X30-10S |
|---|---|
| Type | Multi-mount cylinder, adjustable stroke |
| Series | MK (no-rotating) |
| 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
This 20 mm bore gives up to 157.1 N of push at 0.5 MPa on the push side (pull is lower). MKJ fits jobs where the rod must stay square; MD is the standard alternative. The J code adds a 10 mm adjustable range over the 30 mm stroke, comfortably inside the bore-20 table (up to 60 mm) - resist the temptation to run an over-long stroke on this short body. The trailing S means the magnet is included; thread is PT by default or G, and side-load questions are best routed to us.
Applications
Jig positioning on machining fixtures
Position and locate parts on a machining jig: the non-turning rod holds the locator true while 6-way fixing drops the cylinder into tight fixture faces, and the magnet enables end-position sensing.
Press-fit and staking station
Apply a light press or staking action where the part must not twist under load: 157.1 N of push at 0.5 MPa suits small components, with the adjustable range trimming the approach height.
Height-adjustable ejector
Eject or lift small parts from a nest to a fixed discharge height: the adjustable stroke sets the lift precisely and side-by-side mounting fits multiple nests on one plate.
FAQ
Why does this model end in S when the MKJ20X30-10 does not?
The trailing S means a magnet is fitted to this cylinder, so magnetic switches can be seated in the body slots. The magnet is an option on the MD/MK range, present only when the SKU shows it.
Can I mount it from any face, and how do I confirm clearances?
Yes - the multi-mount body fixes from all six directions (front, back, left, right, top, bottom) so units can sit side by side. Exact dimensions for your stroke and side-load limits come from the datasheet, which we can supply on request.