Airtac MKJ Adjustable Cylinder MKJ25X30-10S
The AirTAC Airtac MKJ Adjustable Cylinder MKJ25X30-10S 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 MKJ25X30-10S
The MKJ25X30-10S is an AirTAC adjustable-stroke multi-mount cylinder, a compact square-body unit that can be fixed from 6 directions (front, back, left, right, top and bottom) and mounted side by side with other units to save space. Magnetic-switch slots run around the body, guide precision is high, and no added lubricant is needed. With a 25 mm bore and 30 mm base stroke plus a 10 mm adjustable range, it delivers a theoretical push thrust of 245.4 N at 0.5 MPa, double acting at 30-500 mm/s, with a bumper cushion. Operating pressure is 0.15-1.0 MPa (22-145 psi) on filtered air to 40 um, at -20 to 70 C.
This is a genuine AirTAC part from the MK family, so a no-rotating plate, brass bushing and fixed rod stop the piston rod from turning - unlike the standard MD family where rotation is allowed. This SKU is double acting with a magnet (the trailing S in the code), so reed or Hall-effect switches can be seated in the body slots. Typical materials include an aluminium-alloy body, a stainless or S45C rod and NBR seals; we confirm exact dimensions and sizing from the datasheet on request.
Airtac MKJ Adjustable Cylinder MKJ25X30-10S Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ25X30-10S |
|---|---|
| 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
Start with bore: at 25 mm this model gives 245.4 N theoretical push thrust at 0.5 MPa, so check your load and pressure against that figure. Choose MK if the rod must not rotate (no-rotating plate and fixed rod) or MD if rotation is acceptable. The J suffix means adjustable stroke: the base 30 mm stroke is within the 60 mm maximum for this bore, and the -10 setting adds a 10 mm adjustable range on top (20 mm and 30 mm ranges are also available). The trailing S means a magnet is fitted for switch position sensing; order without S if you do not need switching. Port thread is PT by default, or specify G. Keep the stroke within the bore's table, since the short square cover works best against an over-long stroke, and confirm any side-load from the datasheet.
Applications
Small-parts clamp
Clamps fixtures or small parts in machining and assembly jigs, with the rod held from rotating so the clamp plate stays square to the part.
Pick-and-place transfer
Drives the horizontal leg of a compact pick-and-place head where side-by-side mounting keeps the station footprint small and the plate cannot spin.
Jig positioning stopper
Positions and stops workpieces on conveyor or fixture jigs, fixed from any of 6 directions to suit tight machine layouts, with the adjustable range fine-tuning the stop point.
FAQ
What does the -10 in MKJ25X30-10S mean?
The J prefix marks an adjustable-stroke cylinder. This model has a 30 mm base stroke, and the -10 setting adds a 10 mm adjustable range on top, so the effective stroke can be set anywhere in that extra 10 mm. Settings of 20 mm and 30 mm ranges are also offered in the series.
Why does the rod not rotate, and where do I find exact dimensions?
MK-family cylinders carry a no-rotating plate, brass bushing and fixed rod that stop the piston rod from turning, which keeps attached plates and tooling square. Overall dimensions and stroke-specific data vary per model, so confirm them from the datasheet - we can supply it on request.