Airtac MSK Multi-position Locking Cylinder MSK25X5S
The AirTAC Airtac MSK Multi-position Locking Cylinder MSK25X5S is a genuine MK multi-mount cylinder (single acting, push type), 25 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 179.1 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, single acting, push type
- SeriesMK (no-rotating)
- Bore25 mm
- Push thrust @0.5 MPa179.1 N
- Operating pressure0.2 - 1.0 MPa (28 - 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 MSK Multi-position Locking Cylinder MSK25X5S
The MSK25X5S is a compact multi-mount cylinder whose square body can be fixed from 6 directions - front, back, left, right, top and bottom - and set side by side with matching units where panel space is scarce. This single-acting, push-type version extends under air pressure and returns by spring, with a 25 mm bore giving about 179.1 N of theoretical push at 0.5 MPa. The 5 mm stroke fits short-throw clamping and detection jobs, cushioned by a bumper.
It is a genuine AirTAC part in the MK family: a no-rotating plate, bushing and fixed rod keep the rod from turning so the workpiece interface stays oriented. Air should be filtered to 40 um, proof pressure is 1.5 MPa (215 psi), and the temperature range is -20 to 70 C (0 to 150 C only with the optional high-temperature seal material). The trailing S means this SKU includes a magnet for switch detection, as shown. We confirm dimensions and sizing from the datasheet on request.
Airtac MSK Multi-position Locking Cylinder MSK25X5S Technical Specifications
| Model | Airtac MSK Multi-position Locking Cylinder MSK25X5S |
|---|---|
| Type | Multi-mount cylinder, single acting, push type |
| Series | MK (no-rotating) |
| Bore | 25 mm |
| Push thrust @0.5 MPa | 179.1 N |
| Port size | M5x0.8 (PT thread) |
| Magnet | With magnet (S) |
| Fluid | Air, filtered to 40 um |
|---|---|
| Operating pressure | 0.2 - 1.0 MPa (28 - 145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature | -20 to 70 C |
| Speed range | 50 - 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
The 25 mm bore gives about 179.1 N of push at 0.5 MPa; step down to a 16 mm bore for lighter loads or up to the 32 mm bore for roughly 281.5 N. MSK is single-acting push - extend by air, spring return - while MK is double acting, MTK is single-acting pull, MKD is double rod and MKJ adds an adjustable stroke. The 5 mm stroke is well within the single-acting 20 mm table limit; respect the short body and do not over-specify stroke. The S suffix means this model carries a magnet, which suits cycle detection; the plain MSK25X5 is the without-magnet choice. Port thread is PT as standard with G available; for side-load capacity, check the datasheet with us.
Applications
Part-presence clamp with detection
The rod extends 5 mm to hold a small component in a nest while the magnet signals clamped position to the PLC, ending the cycle only on confirmation.
Fixture indexing on a rotary table
Bolted to the fixture edge, the no-rotating rod pushes an indexing pin into each station's hole, and the magnet lets the controller verify pin engagement.
Ejector for small parts on a line
A side-mounted cylinder pushes off-spec parts off a narrow conveyor; 6-direction fixing lets it sit where frame space is tightest.
FAQ
What does the S at the end of MSK25X5S mean?
The trailing S means this cylinder is built with a magnet in the piston, so reed or solid-state switches placed in the slots around the square body can detect rod position. The identically sized MSK25X5 without the S is the without-magnet version - the magnet is an option on this range, never a fixed standard.
Where must I be careful when applying this cylinder?
As a single-acting unit it delivers push force only on extend, with spring return, so the return stroke cannot carry a load. Keep the stroke short - single-acting versions are catalogued only to 20 mm - and respect the compact body rather than stretching the stroke. Allowable side load and stroke-specific dimensions are datasheet items; we can confirm them on request.