
The AirTAC Airtac MK Series Multi-position Locking Cylinder MK16X40S is a genuine MK multi-mount cylinder (double acting), 16 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 100.5 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.
The MK16X40S is an AirTAC MK-family multi-mount cylinder: a compact square-body air cylinder that fixes from 6 directions (front, back, left, right, top and bottom) and mounts side by side to save space. Magnetic-switch slots run around the body, guide precision is high, and no added lubricant is needed. This model is double acting with a 16 mm bore and 40 mm stroke: at 0.5 MPa it delivers about 100.5 N of theoretical push force, suited to light clamping, pushing and positioning tasks. Cushioning is a bumper.
This is a genuine AirTAC part. The MK family is the no-rotating version: a fixed rod and plate stop the piston rod from turning, so loads hold their orientation - unlike the standard MD family where rotation is allowed. The trailing S means this model comes WITH a magnet; the MK16X40 without the S is supplied without one. Operating pressure for this bore is 0.15-1.0 MPa (22-145 psi) with filtered air to 40 um. We confirm dimensions, weights and sizing details from the datasheet on request.
| Model | Airtac MK Series Multi-position Locking Cylinder MK16X40S |
|---|---|
| Type | Multi-mount cylinder, double acting |
| Series | MK (no-rotating) |
| Bore | 16 mm |
| Push thrust @0.5 MPa | 100.5 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.
Choose the bore for thrust: at 0.5 MPa this 16 mm bore pushes with about 100.5 N and pulls with about 86.4 N (double acting). Choose MK over MD when the rod must not rotate. Acting options across the range are double acting (MK), single-acting push (MSK), single-acting pull (MTK), double rod (MKD) and adjustable stroke (MKJ). Double-acting 16 mm bores accept strokes up to 50 mm, and the 40 mm stroke here is within that table. The trailing S adds a magnet for switch detection; thread is PT by default or G. Keep the stroke modest since the short cover limits build length; for side-load capacity, confirm from the datasheet or ask us.
Mounted side by side on a compact transfer bar, cylinders push or place small parts between nests over the 40 mm stroke; the no-rotating rod keeps gripper plates aligned, and the magnet feeds position feedback to the PLC.
The 16 mm bore delivers about 100.5 N at 0.5 MPa to clamp small components in a machining or assembly jig, with the magnet confirming the clamp is fully extended before the cycle continues.
Fixed from the top or side face of the body to a conveyor rail, the cylinder raises a stopper to index parts; the no-rotating rod keeps the stopper blade level, and switch slots report end positions.
As a double-acting cylinder, the push side delivers about 100.5 N and the pull side about 86.4 N of theoretical force at 0.5 MPa, so size the job around the push figure and leave margin. For single-acting MK variants the figures differ, so confirm the exact model with us before selecting.
The MK family adds a no-rotating plate, brass bushing and fixed rod that stop the piston rod turning, which is why it is chosen over the standard MD family when the load must keep its orientation. The trailing S means this model is supplied WITH a magnet; without the S the same cylinder comes without one.