Airtac MKJ Adjustable Cylinder MKJ32X50-20
The AirTAC Airtac MKJ Adjustable Cylinder MKJ32X50-20 is a genuine MK multi-mount cylinder (adjustable stroke), 32 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 402.1 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, adjustable stroke
- SeriesMK (no-rotating)
- Bore32 mm
- Push thrust @0.5 MPa402.1 N
- Operating pressure0.15 - 1.0 MPa (22 - 145 psi)
- Port size1/8"
- CushionBumper
- MagnetWithout magnet
- 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 MKJ32X50-20
The MKJ32X50-20 is an adjustable-stroke, no-rotating multi-mount cylinder with a 32 mm bore and 50 mm base stroke. The compact square body fixes from six directions (front, back, left, right, top and bottom) and can be mounted side by side to save space, with magnetic-switch slots around the body and high guide precision. As a double-acting cylinder it delivers a theoretical push force of 402.1 N at 0.5 MPa (345.6 N on the pull side), runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), and cushions with a bumper. The 20 mm adjustable range on top of the 50 mm stroke lets you set the end position within that window without changing cylinders.
This is a genuine AirTAC part from the MK family, where a fixed rod, plate and brass bushing stop the piston rod from turning - unlike the standard MD family, where rod rotation is allowed. This SKU is listed without the magnet option; the magnet is available on the S versions. Typical materials include an aluminium-alloy body, piston and covers with a stainless or S45C rod and NBR seals, but bore-specific detail should be confirmed from the datasheet. We confirm dimensions and sizing from the datasheet on request.
Airtac MKJ Adjustable Cylinder MKJ32X50-20 Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ32X50-20 |
|---|---|
| Type | Multi-mount cylinder, adjustable stroke |
| Series | MK (no-rotating) |
| Bore | 32 mm |
| Push thrust @0.5 MPa | 402.1 N |
| Port size | 1/8" (PT thread) |
| Magnet | Without magnet |
| 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
The 32 mm bore gives the highest thrust in this series - 402.1 N push at 0.5 MPa double acting - so select it where firm clamping or pressing force is needed. Choose MKJ over MD when the rod must not rotate; choose MD when rotation is acceptable. This is a double-acting unit. The 50 mm base stroke sits within the bore 32 table (up to 60 mm), and the adjustable-stroke design adds a 20 mm range on top of it. Keep strokes modest: the covers are compact, so avoid specifying an over-long stroke, and confirm side-load capacity with us before applying offset loads. The listed thread is PT; a G thread version is available. Magnet is only fitted on SKUs carrying the S suffix, like the MKJ32X50-20S.
Applications
Small-parts clamping
Mounted top or bottom on a fixture plate, the non-rotating rod and plate hold a machined part squarely in a clamp nest while a drilling or forming step runs.
Pick-and-place extend
Bolted side by side along a transfer rail, several MKJ units extend to push or position parts between stations, with the adjustable range dialled in to match each station pitch.
Conveyor gate and stopper
Fixed through the conveyor frame from the side, the cylinder raises a stopper plate to pause cartons at a merge point, and the rod cannot twist under the plate's load.
FAQ
What does the -20 at the end of MKJ32X50-20 mean?
It is the adjustable-stroke range. The cylinder has a 50 mm base stroke plus a 20 mm adjustment on top of it, so you can set the actual end of stroke anywhere within that extra 20 mm window. Other adjustable ranges of 10 or 30 mm are available on the MKJ series, and magnet is only included on SKUs with an S suffix.
How does the no-rotating design help in a compact fixture?
A fixed rod, plate and brass bushing stop the piston rod from turning, so attached plates, clamps or stoppers stay square without an external anti-rotation guide. The square body still fixes from all six directions and mounts side by side to save space. Because the covers are compact, avoid an over-long stroke, and confirm side-load limits and exact dimensions from the datasheet before finalising the layout.