Airtac MKJ Adjustable Cylinder MKJ20X50-50
The AirTAC MKJ Adjustable Cylinder MKJ20X50-50 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
- 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 MKJ20X50-50
The MKJ20X50-50 is an AirTAC multi-mount cylinder in the no-rotating MK family: a compact square body you can fix from six directions (front, back, left, right, top and bottom) and mount side by side to save space. It is double acting with a 20 mm bore, a 50 mm stroke plus a 50 mm adjustable range, and about 157.1 N theoretical push at 0.5 MPa. Cushioning is a bumper, the medium is air filtered to 40 um, proof pressure is 1.5 MPa (215 psi), and it operates from -20 to 70 C (0 to 150 C only with the optional high-temperature seal material). Magnetic-switch slots run around the body, with high guide precision and no added lubricant required.
This is a genuine AirTAC part. In the MK family a fixed rod, no-rotating plate and brass bushing prevent the piston rod from turning, unlike the standard MD range where rotation is allowed. As the SKU shows, no magnet is fitted on this model. We can confirm dimensions and sizing from the datasheet on request.
Airtac MKJ Adjustable Cylinder MKJ20X50-50 Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ20X50-50 |
|---|---|
| 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 | Without magnet |
| 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
Bore 20 double acting provides 157.1 N theoretical push at 0.5 MPa (131.9 N pull). Choose MD when rod rotation is acceptable; choose this MK no-rotating version when the rod or a mounted plate must stay put. Strokes for bore 20 double acting reach 60 mm; this SKU is a 50 mm stroke with a 50 mm adjustable range on top - the widest option here - and the short covers mean an over-long stroke should be avoided. This SKU carries no magnet; add the S suffix if you need switch sensing. Thread is PT as standard with a G suffix option. Confirm side-load and dimensions from the datasheet through us.
Applications
Stopper gate on conveyors
The no-rotating rod holds the stopper blade level as it rises to halt parts on a conveyor, and the body fixes from six directions on the frame.
Lift-and-locate pins
A 50 mm adjustable range sets lift height for locating pins that raise workpieces into position, with the plate staying square throughout.
FAQ
What is the difference between MK and MD multi-mount cylinders?
Both are compact square-body cylinders that fix from six directions and mount side by side. In the MK family, such as this MKJ20X50-50, a fixed rod and no-rotating plate stop the piston rod from turning. In the MD standard family the rod is allowed to rotate. Pick MK when the load must stay oriented.
Is the 50 mm adjustable range suitable for my machine?
This SKU offers a 50 mm stroke plus a 50 mm adjustable range, but the short covers mean an over-long stroke should be avoided in compact fixtures - keep the stroke matched to the actual job. Exact installed dimensions and side-load limits are per the datasheet; we can confirm them on request.