Airtac MK Series Multi-position Locking Cylinder MK20X50SH
The AirTAC MK Series Multi-position Locking Cylinder MK20X50SH 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 MK20X50SH
The MK20X50SH 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 to save space in dense panels. Magnetic-switch slots surround the body, guide precision is high, and no added lubricant is required. The 20 mm bore provides about 157.1 N of theoretical push at 0.5 MPa over its 50 mm stroke, with cushioning by bumper.
As an MK-family part, it includes the no-rotating plate, brass bushing and fixed rod, so the rod will not turn under load - a genuine AirTAC part built for fixtures where orientation must be held. The trailing S means a magnet is fitted for switch detection, and the trailing H denotes G thread on the ports. We confirm exact dimensions and sizing from the datasheet on request.
Airtac MK Series Multi-position Locking Cylinder MK20X50SH Technical Specifications
| Model | Airtac MK Series Multi-position Locking Cylinder MK20X50SH |
|---|---|
| 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
Select the bore for thrust: this 20 mm bore yields 157.1 N theoretical push at 0.5 MPa (pull side is lower). MK prevents rod rotation; the MD body is the standard type where rotation is allowed. Acting options across the range are double acting (MK), single push (MSK), single pull (MTK), double rod (MKD) and adjustable stroke (MKJ); this model is double acting. The 50 mm stroke sits inside the 20 mm bore's 60 mm table limit - keep strokes short relative to the bore because of the short cover. The S adds a magnet and the H specifies G thread instead of the PT default. Side-load figures come from the datasheet; ask us to confirm.
Applications
Square pick-off in compact cells
Grip and lift small machined parts where the gripper face must not twist. The no-rotating rod holds the tooling plate square, the 6-way fixing lets the cylinder bolt into a crowded cell wall, and side-by-side units share one manifold area.
Indexing plunger on a rotary dial
Drive an indexing or locking plunger into a dial-plate notch. The fixed rod keeps the plunger aligned with the notch, and the square body fixes from the top or side of the machine frame whichever the layout allows.
Side-rail divert or reject gate
Push products off a conveyor at a reject or divert point using a paddle on the rod. The no-rotating rod keeps the paddle perpendicular to travel, and the compact body mounts flush against the side rail to save line-side space.
FAQ
What does the H at the end of MK20X50SH mean?
The trailing H specifies G thread; without it the cylinder is supplied with PT thread. The port size itself is the same M5x0.8 on this 20 mm bore, so choose G when your fittings and pneumatic circuit follow the G standard and PT when they follow it.
How short should the stroke be relative to the bore?
The MK body has a short cover, so an over-long stroke for the bore should be avoided. This 20 mm bore is offered up to a 60 mm stroke; the 50 mm stroke here is within that table. Always size from the datasheet table, and ask us to check the application before you order.