Airtac MK Series Multi-position Locking Cylinder MK20X35S
The AirTAC Airtac MK Series Multi-position Locking Cylinder MK20X35S 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 MK20X35S
The MK20X35S is an AirTAC MK series multi-mount cylinder, a compact square-body cylinder with a 20 mm bore and 35 mm stroke that fixes from six directions (front, back, left, right, top and bottom) and mounts side by side to save space. It is double acting, and the MK no-rotating plate stops the piston rod from turning, so pads and fixtures on the rod stay square through every cycle. At 0.5 MPa this bore delivers about 157.1 N of theoretical push, and a bumper cushions the piston at each end of stroke.
This is a genuine AirTAC part. The MK family prevents rod rotation, while the standard MD family allows it. This SKU carries a magnet (the trailing S), so the magnetic-switch slots around the body can be used for end-of-stroke or mid-stroke detection. Operating range on this bore is 0.15-1.0 MPa (22-145 psi), the medium is air filtered to 40 um, and working temperature is -20 to 70 C (up to 150 C only with the optional high-temperature seal material). We confirm dimensions and sizing from the datasheet on request.
Airtac MK Series Multi-position Locking Cylinder MK20X35S Technical Specifications
| Model | Airtac MK Series Multi-position Locking Cylinder MK20X35S |
|---|---|
| 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
Bore sets thrust: at 0.5 MPa this 20 mm bore pushes about 157.1 N double acting, with about 131.9 N on the pull side. Choose MK when the rod must not rotate; choose MD if rotation is acceptable. This unit is double acting with a 35 mm stroke, within the bore 20 table that runs up to 60 mm; the short cover keeps the body compact, so avoid an over-long stroke for the job. The trailing S adds a magnet for switch detection; omit S if you do not need position sensing. The port is M5x0.8 with PT thread by default, and a G thread version is available. Side-load capacity is not quoted here; route that question to us.
Applications
Pallet-gate stopper
Stop roller or belt flow at a picking station by extending a stop blade into the lane. The no-rotating rod keeps the blade square to the load, and the magnet allows a switch to confirm the stop is fully extended.
Indexing fixture clamp
Clamp a part during an indexing step on a rotary or linear table. Multiple MK20 bodies mount side by side for evenly spaced clamps, and the switch slots let the controller verify each clamp is closed before the next index.
Tray push-off station
Push empty trays or blanks off a conveyor into a stacker. The compact square body fixes from the side of the frame in a tight envelope, and the no-rotating plate keeps the pusher face parallel to the tray edge.
FAQ
Should I choose the MK20X35S or the standard MD cylinder?
Choose the MK20X35S when the work on the rod must not rotate: the MK family adds a no-rotating plate, brass bushing and fixed rod that stop the rod turning. The MD family is the standard version where some rod rotation is acceptable. Both share the same 20 mm bore and 35 mm stroke footprint approach.
How do the six-direction mounting options work in practice?
The square body has fixing threads on the front, back, left, right, top and bottom faces, so the cylinder can be bolted from whatever face the machine layout allows and lined up next to another unit. Stroke-specific dimensions and side-load limits are not quoted here; confirm them from the datasheet.