Airtac MKD Multi-position Clamping Cylinder MKD20X50S
The AirTAC Airtac MKD Multi-position Clamping Cylinder MKD20X50S is a genuine MK multi-mount cylinder (double rod), 20 mm bore. Its compact square body fixes from six directions and mounts side by side to save space. It delivers about 157.1 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, double rod
- SeriesMK (no-rotating)
- Bore20 mm
- Push thrust @0.5 MPa157.1 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 MKD Multi-position Clamping Cylinder MKD20X50S
The AirTAC MKD20X50S is a double-rod, no-rotating multi-mount cylinder with a 20 mm bore and 50 mm stroke. Its square body fixes from six directions (front, back, left, right, top and bottom) and mounts side by side to save space, with magnetic-switch slots around the body and high guide precision without added lubrication. The double-rod layout delivers the stroke from both ends, handy for feeding two workstations from one cylinder. At 0.5 MPa the bore-20 double-acting push figure is a theoretical force of about 157.1 N, with a bumper cushion, 0.15-1.0 MPa (22-145 psi) operating range and 30-500 mm/s speed on filtered air.
This is a genuine AirTAC part. MK is the no-rotating family: a fixed rod, no-rotating plate and brass bushing stop the rod from turning, where the standard MD family allows rotation. The trailing S in the SKU shows a built-in sintered NdFeB magnet for magnetic-switch sensing. Materials are typical (aluminium-alloy body and covers, stainless or S45C rod, NBR seals, TPU bumper); we confirm exact dimensions and sizing from the datasheet on request.
Airtac MKD Multi-position Clamping Cylinder MKD20X50S Technical Specifications
| Model | Airtac MKD Multi-position Clamping Cylinder MKD20X50S |
|---|---|
| Type | Multi-mount cylinder, double rod |
| Series | MK (no-rotating) |
| Bore | 20 mm |
| Push thrust @0.5 MPa | 157.1 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
Pick the 20 mm bore for the bore-20 double-acting push thrust of about 157.1 N at 0.5 MPa. MKD means no-rotating plus double rod: rotation is prevented and the stroke is available at both rod ends; choose MD standard if rotation is acceptable and one rod is enough. The 50 mm stroke fits inside the bore-20 double-acting table, which reaches 60 mm, but the short covers reward keeping the stroke modest rather than near the maximum. The S suffix shows a magnet is fitted, so switch slots can be used for sensing; drop the S if no feedback is needed. Ports are M5x0.8, PT thread as shown, with G thread available. Allowable side load is not listed here, so send that question to us for a datasheet answer.
Applications
Pick-and-place end effectors
The no-rotating double rod carries a gripper plate squarely onto small parts, and the magnet signals end positions through the switch slots around the body.
Conveyor product pushing
Bolted from the side of a conveyor frame, cylinders sit side by side to push products off the belt, with the rod held from turning by the no-rotating plate.
Press-fit stamping positioners
Fixed from the top of a bench fixture, the double-rod body aligns a workpiece between both rod ends before a light press operation, bumper cushioning the return.
FAQ
What does the S in MKD20X50S mean?
The trailing S shows this cylinder is built with a magnet. The magnetic-switch slots around the square body can then host position switches. Without the S the same model has no magnet, so that sensing option is not supported.
Why choose a no-rotating MK over a standard MD cylinder?
The MK family uses a fixed rod and no-rotating plate with a brass bushing to stop the rod from turning, which matters for straight pushes and aligned tooling. MD cylinders are the standard type where rotation is allowed. Body dimensions and side-load limits are confirmed from the datasheet.