Airtac MKJ Adjustable Cylinder MKJ25X25-30S
The AirTAC Airtac MKJ Adjustable Cylinder MKJ25X25-30S is a genuine MK multi-mount cylinder (adjustable stroke), 25 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 245.4 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, adjustable stroke
- SeriesMK (no-rotating)
- Bore25 mm
- Push thrust @0.5 MPa245.4 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 MKJ Adjustable Cylinder MKJ25X25-30S
The MKJ25X25-30S is an AirTAC multi-mount cylinder: a compact square-body unit that fixes from six directions (front, back, left, right, top and bottom) and mounts side by side to save space on crowded machine plates. This one is double acting with a 25 mm bore, a 25 mm base stroke and a 30 mm adjustable range, giving about 245.4 N of theoretical push force at 0.5 MPa. A bumper cushions the stroke ends, and magnetic-switch slots sit around the body.
It is a genuine AirTAC part from the MK family, so a no-rotating plate, fixed rod and brass bushing stop the rod from turning where a workpiece or plate must stay square. The S suffix on this SKU means a piston magnet is built in. Operating pressure is 0.15-1.0 MPa (22-145 psi) on air filtered to 40 um, and we confirm exact dimensions and sizing from the datasheet on request.
Airtac MKJ Adjustable Cylinder MKJ25X25-30S Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ25X25-30S |
|---|---|
| Type | Multi-mount cylinder, adjustable stroke |
| Series | MK (no-rotating) |
| Bore | 25 mm |
| Push thrust @0.5 MPa | 245.4 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
Pick the bore for the thrust: this 25 mm bore delivers about 245.4 N of theoretical push at 0.5 MPa, with the pull side lower. Choose MKJ when rotation must be prevented; the MD standard family is for jobs where rod rotation is acceptable. This SKU is double acting; single-acting push (MSK) and pull (MTK) versions and the double-rod MKD exist in the same family.
The 25 mm base stroke sits inside this bore's 60 mm maximum, and the J adds a 30 mm adjustable range on top. The S suffix means this cylinder carries a magnet for switch detection. Thread is PT as standard with a G option. Avoid an over-long stroke against the short covers, and check side-load capability with us.
Applications
Pick and place
Transferring small housings between two stations: the no-rotating rod keeps the pick plate oriented, the built-in magnet supports end-position detection, and the compact body slots into tight transfer units.
Small-parts clamping
Clamping plastic caps under a marking head: the square body fixes from any of six directions on the machine table, about 245.4 N of push at 0.5 MPa holds the part, and the bumper softens the clamp landing.
Jig positioning
Holding a jig plate square at its working station: the fixed rod drives the plate without turning, the adjustable range trims the stop point, and side-by-side mounting keeps the base plate compact.
FAQ
What does the S at the end of MKJ25X25-30S mean?
S means a magnet is built into the piston; the version without the S suffix has none. Everything else in the code reads the same: MKJ is a no-rotating, double-acting multi-mount cylinder with a 25 mm bore, 25 mm stroke plus a 30 mm adjustable range, and a PT thread.
How long can the stroke be on this bore?
For double-acting cylinders at the 25 mm bore, strokes run up to 60 mm, and MKJ adds a 10, 20 or 30 mm adjustable range on top. Avoid pushing an over-long stroke, since the short covers limit rod support; ask us to check side-load and exact dimensions from the datasheet.