Airtac MKJ Adjustable Cylinder MKJ32X40-30S
The AirTAC Airtac MKJ Adjustable Cylinder MKJ32X40-30S 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
- 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 MKJ32X40-30S
The MKJ32X40-30S is an adjustable-stroke, no-rotating multi-mount cylinder from AirTAC's MK family, built for dense machine layouts. The square body fixes from six directions - front, back, left, right, top and bottom - and units mount side by side to save space. In double-acting push at 32 mm bore it produces a theoretical 402.1 N at 0.5 MPa, cushions with a bumper and operates at 30-500 mm/s. The 40 mm stroke carries a 30 mm adjustable range, letting the effective stroke be dialled in from roughly 10 mm up to the full 40 mm.
This is a genuine AirTAC part. The MK family is the no-rotating type - a fixed rod and plate stop the piston rod turning - whereas the standard MD family allows rotation. The trailing S means a magnet is fitted, and switch slots run around the body so sensors can sit at any position; a SKU without the S has no magnet. We confirm dimensions, weights and bore-specific details from the datasheet on request.
Airtac MKJ Adjustable Cylinder MKJ32X40-30S Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ32X40-30S |
|---|---|
| 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 | 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
Take the 32 mm bore when the job needs the series' maximum thrust - 402.1 N push (345.6 N pull) at 0.5 MPa. Choose MK when the rod must not rotate and MD when it may. MKJ is double acting, rated 0.15-1.0 MPa, with a 30 mm adjustable range on top of the 40 mm stroke. Double-acting bore-32 strokes run to 60 mm, but an over-long stroke past the short cover is a common mistake - keep the stroke conservative. This SKU includes the magnet (S) and the PT thread (G is orderable); side-load figures and exact dimensions come from the datasheet, so confirm with us.
Applications
Clamping fixture with end detection
Clamps machined parts in a drilling jig and signals full clamp to the PLC via the magnet, so the cycle cannot start until the plate, which cannot rotate, bears squarely on the part.
Part diverter with position feedback
Pushes parts off a sorting conveyor into a lane. The no-rotating plate stays square to the flow, and the magnet confirms the diverter has returned home between parts.
Z-axis stopper on an elevator stage
Sets a repeatable height stop on a small lift stage. The 30 mm adjustable range handles different product heights, and the 402.1 N push at 0.5 MPa holds the stage firmly.
FAQ
How do I choose between the 20 mm and 30 mm adjustable ranges on the MKJ32X40?
Both are 32 mm bore double-acting MKJ cylinders with the same 402.1 N push at 0.5 MPa. The difference is only the adjustable window: the -20S trims 20 mm, the -30 and -30S trim 30 mm off the 40 mm base stroke. Pick the -30 variants when you need the widest set-down range; confirm final dimensions for your stroke setting from the datasheet.
Is there a limit on how long the stroke can be?
Yes. Double-acting bore-32 multi-mount cylinders are rated up to 60 mm stroke, and the short body construction is not intended for over-long strokes - pushing past the cover limit risks poor guidance. Keep the selected stroke within the table, and route any side-load or dimension questions to us, since those values are listed in the datasheet rather than on the product page.