Airtac MKD Multi-position Clamping Cylinder MKD20X40S
The AirTAC Airtac MKD Multi-position Clamping Cylinder MKD20X40S 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 MKD20X40S
The MKD20X40S is a genuine AirTAC multi-mount cylinder from the MK family: a compact square-body unit that can be fixed from 6 directions (front, back, left, right, top and bottom) and mounted side by side with neighbours to save space, with magnetic-switch slots machined around the body. This double-rod, double-acting, no-rotating version carries a rod on both ends and prevents the rod from turning, with a 20mm bore delivering a rod-side theoretical thrust of 131.9 N at 0.5 MPa and cushioning by a bumper.
As an MK-series model the rod rotation is stopped by a no-rotating plate, bushing and fixed rod, which matters when a pad or fixture must hold its orientation. The trailing S in the code confirms this SKU includes the magnet for position sensing, and the thread is PT (a G option exists). Dimensions and sizing for this stroke are per the datasheet; we confirm them on request.
Airtac MKD Multi-position Clamping Cylinder MKD20X40S Technical Specifications
| Model | Airtac MKD Multi-position Clamping Cylinder MKD20X40S |
|---|---|
| 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
The 20mm bore gives 131.9 N of rod-side theoretical thrust at 0.5 MPa, so check your load against that figure before committing. MKD double rod is the choice when you need force or a reference surface on both ends of the piston rod, and the MK family is right where the rod must not rotate. The 40mm stroke sits comfortably inside the 20mm bore table (up to 60mm); avoid pushing beyond the table, because short covers on compact bodies will not accept an over-long stroke. This SKU carries the magnet (S) for switch detection, and the PT thread can be swapped for G if your supply fittings require it.
Applications
Two-Sided Small-Parts Clamp
The second rod lets a 20mm fixture clamp or support from both ends inside a narrow pocket, while the no-rotating plate keeps each clamp pad facing the part.
Dual-End Conveyor Stopper
Mount side by side along a conveyor line and extend both rods to stop or square up small parts, with the fixed rod preventing any twist of the stop plate.
Jig Pin Positioning
Fix the body from the top or side of a welding or assembly jig and use the no-rotating double rod as an orientation pin that stays pointed the same way every cycle.
FAQ
What does the MKD prefix on MKD20X40S mean?
MKD is the MK family (no-rotating) in a double-rod version: a double-acting cylinder with a rod on both ends, and a plate plus bushing and fixed rod that stop the piston rod from turning. At 0.5 MPa the 20mm bore gives 131.9 N of rod-side theoretical thrust on each stroke.
How much side load can this cylinder take, and what are its dimensions?
Allowable side load and the overall dimensions for the 40mm stroke are not published figures on this page; they depend on the stroke and mounting direction, so confirm them from the datasheet or ask us and we will size it with you.