Airtac MKJ Adjustable Cylinder MKJ32X40-20
The AirTAC Airtac MKJ Adjustable Cylinder MKJ32X40-20 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 MKJ32X40-20
The MKJ32X40-20 is an AirTAC adjustable-stroke multi-mount cylinder that fixes from six directions (front, back, left, right, top and bottom) and mounts side by side to save space. With a 32 mm bore, a 40 mm base stroke and a 20 mm adjustable range, it is double acting and no-rotating, delivering about 402.1 N of theoretical push force at 0.5 MPa. Cushioning is a bumper, and magnetic-switch slots run around the body (this SKU is built without a magnet).
This is a genuine AirTAC part. The MK family stops the piston rod from turning using a no-rotating plate, bushing and fixed rod, whereas the standard MD family allows rotation. Operating pressure for this 32 mm bore is 0.15-1.0 MPa (22-145 psi) on air filtered to 40 um, and the media temperature range is -20 to 70 C (up to 0-150 C only with the optional high-temperature seal material). We confirm exact dimensions and sizing from the datasheet on request.
Airtac MKJ Adjustable Cylinder MKJ32X40-20 Technical Specifications
| Model | Airtac MKJ Adjustable Cylinder MKJ32X40-20 |
|---|---|
| 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
Select the 32 mm bore for the highest thrust in this family: 402.1 N push or 345.6 N pull at 0.5 MPa. Take MK instead of MD when rod rotation must be prevented. The MKJ adjustable-stroke variant adds a 10, 20 or 30 mm adjustable range on top of the base stroke; this SKU pairs the 40 mm base stroke with a 20 mm adjustable range (bore 32 double-acting strokes run up to 60 mm). This SKU has no magnet (no S suffix) and PT thread; the magnet option (S) and G thread are available. Remember the short covers favor short strokes, so avoid over-long strokes, and route side-load questions to us for a datasheet answer.
Applications
Gate divert on conveyors
Side-mounted to a conveyor rail, the 20 mm adjustable range sets the divert gate throw, and the no-rotating rod keeps the gate plate from racking as products push against it.
Press nest ejection
Fixed from the bottom of a small press nest, the 32 mm bore ejects formed parts with 402.1 N of push at 0.5 MPa while the non-turning rod keeps the ejector plate level.
Machine builder clamping
For compact machine frames, the six-direction body fix lets builders bolt these cylinders wherever space allows, side by side, with the 20 mm adjustment dialing in clamp travel.
FAQ
How do I choose between the 10, 20 and 30 mm adjustable ranges on MKJ cylinders?
The MKJ32X40-20 carries a 20 mm adjustable range on top of its 40 mm base stroke; the 10 mm and 30 mm versions are the same no-rotating, double-acting 32 mm bore cylinder with less or more adjustment. Pick the range that matches how much your stop or clamp position needs to vary, keeping total stroke within the 60 mm limit for bore 32.
Can this cylinder take side loads on the rod?
The MK design guides with high precision and needs no added lubrication, but an allowable side-load figure is not published in our listing because it varies by bore and stroke. Confirm the side-load limit and exact dimensions from the datasheet, and note the short covers mean you should avoid over-long strokes.