Airtac MKJ Adjustable Cylinder MKJ20X60-40S
The AirTAC MKJ Adjustable Cylinder MKJ20X60-40S is a genuine MK 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. As an MK unit a fixed rod stops the piston rod rotating.
- TypeMulti-mount, double rod, 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 MKJ20X60-40S
The MKJ series is the adjustable-stroke version of AirTAC's compact multi-mount cylinder: a square-bodied actuator that fixes from six directions - front, back, left, right, top and bottom - and mounts side by side to save space. This model is double acting with a 20 mm bore and a 60 mm stroke, with a 40 mm adjustable range shown in the code. At 0.5 MPa it develops a theoretical push thrust of 157.1 N, runs at 30-500 mm/s, and uses a bumper-style cushion, with an operating pressure of 0.15-1.0 MPa (22-145 psi).
This is a genuine AirTAC part from the MK family, so a no-rotating plate, bushing and fixed rod keep the piston rod from turning - unlike the standard MD series, where the rod may rotate. The trailing S confirms the magnet for switch sensing is fitted on this SKU, and the thread is PT by default. We confirm exact dimensions and sizing from the datasheet on request.
Airtac MKJ Adjustable Cylinder MKJ20X60-40S Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ20X60-40S |
|---|---|
| Type | Multi-mount cylinder, double rod, 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
Choose the bore for thrust: at 0.5 MPa this 20 mm bore delivers 157.1 N theoretical push in double acting - step up to 32 mm (402.1 N) for more force or down to 16 mm (100.5 N) for less. Pick MKJ over standard MD when the rod must not rotate and the stroke must be adjustable; the adjustable range is set by the number after the hyphen in the code. Double acting powers both strokes; single-acting push or pull and double-rod variants also exist if the application needs them. The magnet is optional - S means it is fitted here - and this bore uses M5x0.8 ports with PT or G thread. The compact cover limits practical stroke, so avoid an over-long stroke, and let us check side-load capability for your job from the datasheet.
Applications
Pick-and-place on conveyor lines
Mount several MKJ cylinders side by side along a conveyor to drive compact pick-and-place grippers; the no-rotating rod keeps tooling orientation repeatable while the adjustable stroke tunes the grip point.
Gate and stopper actuation
Use the 6-way mounting to bolt the cylinder under or beside a line gate as a stopper, with the no-rotating rod holding the stop plate square to the product flow.
FAQ
What does the code MKJ20X60-40S mean?
MKJ is the adjustable-stroke, no-rotating version of AirTAC's multi-mount cylinder, double acting. 20 is the bore in mm, 60 is the stroke in mm, 40 is the adjustable range from the code, and the trailing S means the position-sensing magnet is fitted. Without an S the cylinder would come without a magnet. The default thread is PT, with G available on request.
Where can I mount this cylinder and how do I size it?
The square body fixes from six directions - front, back, left, right, top and bottom - and units can sit side by side to save space, with switch slots around the body. Overall dimensions vary with stroke and allowable side-load is application specific, so send us your layout and we will confirm both from the datasheet.