Airtac MKJ Adjustable Cylinder MKJ6X20-20
The AirTAC Airtac MKJ Adjustable Cylinder MKJ6X20-20 is a genuine MK multi-mount cylinder (adjustable stroke), 6 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 14.1 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)
- Bore6 mm
- Push thrust @0.5 MPa14.1 N
- Operating pressure0.2 - 1.0 MPa (28 - 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 MKJ Adjustable Cylinder MKJ6X20-20
The MKJ6X20-20 is an adjustable-stroke, no-rotating multi-mount cylinder from AirTAC's MK family. Its square body fixes from six directions (front, back, left, right, top and bottom), so it can be screwed to a plate from any face and lined up side by side to save space, with magnetic-switch slots around the body. The 6 mm bore is double acting with a theoretical 14.1 N push at 0.5 MPa (10.6 N pull) over the 20 mm stroke, and the 20 mm adjustable range gives generous room to dial in the effective stroke. Cushioning is a bumper, operating pressure is 0.2-1.0 MPa (28-145 psi), and speed is 30-500 mm/s.
This is a genuine AirTAC part. Unlike the standard MD family, MK cylinders carry a no-rotating plate, bushing and fixed rod that keep the rod from turning. This SKU has no magnet, so position-switch reading is not available on this unit. Ports are M5x0.8 with PT thread. We confirm dimensions, exact thrust and sizing from the datasheet on request.
Airtac MKJ Adjustable Cylinder MKJ6X20-20 Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ6X20-20 |
|---|---|
| Type | Multi-mount cylinder, adjustable stroke |
| Series | MK (no-rotating) |
| Bore | 6 mm |
| Push thrust @0.5 MPa | 14.1 N |
| Port size | M5x0.8 (PT thread) |
| Magnet | Without magnet |
| Fluid | Air, filtered to 40 um |
|---|---|
| Operating pressure | 0.2 - 1.0 MPa (28 - 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 6 mm bore when your job needs light force only: about 14.1 N push and 10.6 N pull at 0.5 MPa; go to 10, 16, 20, 25 or 32 mm for heavier clamping. MKJ is double acting with a no-rotating rod, unlike the standard MD body where rotation is allowed. The 20 mm base stroke is within the 35 mm limit for this bore, and the 20 mm adjustable range is the largest offered on MKJ. Note there is no magnet on this SKU; choose an S-suffixed model if you need switch slots to be usable. Thread is PT by default (G optional), and we route side-load and stroke-extended dimensions to the datasheet.
Applications
Micro press or staking
Fix the cylinder through the top plate of a bench fixture for light pressing and staking of small parts; the no-rotating rod keeps the tool tip aligned cycle after cycle.
Indexing fixture locking
Mount on the side of a rotary indexing dial to lock each station in place; the adjustable stroke absorbs fixture tolerance when setting the lock position.
Height-stop in a test rig
Stand the cylinder vertically under a sliding probe carriage as an adjustable height stop; six-direction fixing lets it bolt straight to the base plate.
FAQ
How do I choose between MKJ and the standard MD multi-mount cylinder?
MKJ is the adjustable-stroke MK variant, which is double acting and prevents rod rotation via a plate, bushing and fixed rod; use it when a clamp pad or carrier must not turn. The MD family is the standard design where rotation is allowed and there is no adjustment. Both mount from six directions and side by side.
Is there a limit on how long I can make the stroke on this small bore?
Yes. On a 6 mm double-acting cylinder the stroke table tops out at 35 mm, and shorter covers mean an over-long stroke should be avoided; the 20 mm base stroke plus the 20 mm adjustment here sits within that. For exact dimensions at your set stroke, and for allowable side-load figures, confirm from the datasheet.