PKT Precision Mechanics

Due to its special material characteristics such as reduced friction with metal, high durability and easy processing even for complicated shapes, plastics have established themselves as one of the most innovative materials in precision mechanics. PKT has the necessary know-how in the development and production of very small but highly precise plastic components.

 

 

Bearing

Material: PEEK with carbon fiber, filled with graphite and PTFE
Dimensions: Ø 5.0 x 1,6 mm
Special Features: high requirements on concentricity, wear and abrasion resistance as well as high operating temperature
Weight of Part: 0,013 g

Task:
High requirements on concentricity require an exact shrinkage and distortion behavior of the plastic. Wear and abrasion resistance require the use of a suitable material.

Solution:
The material PEEK (heat resistant) is chosen in combination with a suitable filling. A mold with a special injection technique allows for the production of an exactly round cage without imbalances.

 

 

Engine Mount

Material: PBT with carbon fiber and PTFE
Dimensions: Ø 3 mm
Special Features: Bearing shell for motor shaft

Weight of Part: 0,02 g

Task:
This part serves as a bearing shell as well as an electrical connector. Three electrical connections can be found on one side of the part, which are soldered by the customer. The other side is the bearing shell for the motor shaft. The challenge: connecting this small part to the metal strip, the handling of the metal strip in the injection mold, sealing of the strip from the mold half as well as the positioning of the injection point.

Solution:
The special, typical PKT layout of the mold makes it possible to handle the small strip. Special mold cores allow the strip to be sealed properly without damaging it.

 

Frame

Material: PPA with 30% carbon fiber
Dimensions: 4.0 x 4,0 x 0,5 mm
Special Features: Exact shaping of part. Very smooth surfaces, but not sticky
Weight of Part: 0,02 g

Task:
Housing with integrated path for a ball. The extremely small ball may not stick to the plastic part through cohesiveness nor through electrostatic charging.

Solution:
Implementation of a special surface structure as well as an especially suitable plastic.