Airtac MKJ Adjustable Cylinder MKJ25X50-50S
The AirTAC Airtac MKJ Adjustable Cylinder MKJ25X50-50S 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 MKJ25X50-50S
The AirTAC MKJ series is a compact square-body multi-mount cylinder that can be fixed from 6 directions - front, back, left, right, top and bottom - and mounted side by side where panel space is scarce. This MKJ25X50-50S is a no-rotating, double-acting unit with a 25 mm bore, a 50 mm stroke and an extra 50 mm adjustable range, so the rod never turns under load and the stroke can be trimmed to the fixture. At 0.5 MPa the 25 mm bore delivers about 245.4 N of theoretical push thrust, and the cushion is a bumper, not an air cushion.
This is a genuine AirTAC part. In the code, MK marks the no-rotating family (a fixed rod, plate and brass bushing stop the rod turning), J marks adjustable stroke, and the trailing S means this SKU includes a magnet. Magnetic-switch slots run around the body and the high guide precision means no added lubricant. Typical materials are an aluminium-alloy body, covers and piston, a stainless or S45C rod and NBR seals, with bore-specific details confirmed from the datasheet; we can confirm dimensions and sizing on request.
Airtac MKJ Adjustable Cylinder MKJ25X50-50S Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ25X50-50S |
|---|---|
| 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
Choose the bore for thrust: at 0.5 MPa a 25 mm bore gives about 245.4 N of push, with the pull side lower. MKJ is the adjustable-stroke member of the no-rotating MK family; pick plain MK if rotation is acceptable, MKD for a double rod, or an MD-family variant when no-rotating is not needed. This 50 mm stroke sits within the 60 mm limit for a 25 mm double-acting bore, and the code adds a 50 mm adjustable range on top. The S suffix on this SKU means a magnet is fitted; without S there is none. Order PT (default) or G thread. Do not pair an over-long stroke with a short cover; if side loads are present, confirm allowable values with us from the datasheet.
Applications
Indexing on a compact transfer line
Place MKJ units side by side to push product between pitch positions; the non-rotating rod and plate keep the push face square, and the built-in magnet signals end positions to the PLC via the body slots.
Gripper actuation in tight cells
Drive a small parallel gripper with the cylinder fixed from any of 6 directions; no-rotating operation keeps the gripper jaws aligned, and the adjustable range dials in jaw opening.
Small-parts clamping fixture
Clamp parts in a machining or inspection fixture; the magnet provides position feedback through the switch slots, the bumper softens clamp contact, and side-by-side mounting keeps the fixture footprint small.
FAQ
Does MKJ25X50-50S include a magnet, and why does it matter?
Yes - the trailing S on the code means this SKU is the magnet version, which allows magnetic switch detection via the slots around the body. The same cylinder without the S is supplied without a magnet; it is never a standard feature, only what the code shows.
How many ways can I mount an MKJ cylinder?
Six - front, back, left, right, top and bottom - and units can be mounted side by side to save space. Do not fit an over-long stroke to a short cover; overall dimensions change with stroke, so confirm them from the datasheet, and ask us about allowable side load before applying one.