Airtac MK Series Multi-position Locking Cylinder MK20X50S
The AirTAC Airtac MK Series Multi-position Locking Cylinder MK20X50S is a genuine MK multi-mount cylinder (double acting), 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 acting
- 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 MK Series Multi-position Locking Cylinder MK20X50S
The MK20X50S is a genuine AirTAC MK-series multi-mount cylinder: a compact square-body, double acting pneumatic cylinder that can be fixed from 6 directions (front, back, left, right, top and bottom) and mounted side by side with neighbouring units to save space. Magnetic-switch slots are machined around the body, guide precision is high, and no added lubricant is needed. This 20 mm bore delivers about 157.1 N of theoretical push at 0.5 MPa, and the 50 mm stroke suits tighter fixtures where a full-size tie-rod cylinder will not fit. Cushioning is by bumper.
This is a genuine AirTAC part in the MK family, which adds a no-rotating plate, brass bushing and fixed rod so the piston rod cannot turn - useful where the load must stay square. As the SKU ends in S, this unit includes a magnet for position sensing. Ports are M5x0.8 with PT thread. We confirm exact dimensions and sizing from the datasheet on request.
Airtac MK Series Multi-position Locking Cylinder MK20X50S Technical Specifications
| Model | Airtac MK Series Multi-position Locking Cylinder MK20X50S |
|---|---|
| Type | Multi-mount cylinder, double acting |
| 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 gives 157.1 N theoretical push (the pull side is lower). MK differs from MD in that the rod is prevented from rotating; MD is the standard version where rotation is allowed. Acting choices are double acting (MK), single push (MSK), single pull (MTK), double rod (MKD) or adjustable stroke (MKJ). This unit is double acting with a 50 mm stroke - within the 20 mm bore's maximum of 60 mm, but note the short cover: an over-long stroke for the bore can compromise the body design, so stay within the table. The trailing S adds a magnet; thread is PT, with G available. For side-load ratings, confirm from the datasheet or ask us.
Applications
Non-rotating small-parts clamping
Clamp small housings or brackets on an assembly fixture where the pad must stay square to the part. The fixed rod stops the plate turning, and the 6-way body fixing lets the cylinder bolt into the clamp station from whatever face is free.
Jig pin positioning in tight fixtures
Extend a locating pin into a drill or press jig from above or from the side. The 50 mm stroke covers the approach, the no-rotating rod keeps the pin orientation constant, and side-by-side mounting fits several cylinders into one jig block.
Stopper gate on a transfer line
Raise and lower a stopper blade to hold pallets or workpiece carriers at a station. The 6-direction mounting lets the body fix under the conveyor rail, and the no-rotating feature keeps the blade flat against the carrier edge.
FAQ
How do I choose between the MK20X50S and an MD-series cylinder?
The MK20X50S is the no-rotating version: a plate, brass bushing and fixed rod stop the rod from turning, so a pad or blade stays square. The MD series is the standard multi-mount body where rod rotation is allowed. Both mount from 6 directions and side by side, so pick MK when the load orientation must be held, MD when it does not.
Where can I find the mounting dimensions and side-load limits for this cylinder?
Overall dimensions depend on the stroke and mounting face, and side-load capacity is not quoted as a general figure. Both are given in the AirTAC datasheet - we will confirm the exact drawing data and check your side-load conditions on request before you order.