Query regarding a product:















FRICTION SHIMS WITH ELECTROLESS NICKEL COMPOSITES SURFACES

EKagrip FRICTION SHIMS WITH ELECTROLESS NICKEL COMPOSITES SURFACES

Wherever components must be reliably joined together to transmit forces and torques, EKagrip friction shims provide simple, reliable and technically mature solutions.

EKagrip friction shim is a metal foil with a friction-enhancing coating based on electroless nickel with embedded hard material (= electroless nickel composites surface).

Applications

EKagrip friction shims have proven themselves millions of times in general mechanical engineering, in machine tools, marine engineering, wind and water power generators, turbines, automotive engineering and motor sports.

Properties

EKagrip shims are characterized by:

  • Microscale interlocking with the joint surfaces
  • Adjustable and reproducible surface properties
  • Enables weight and packaging-optimized designs
  • Static friction increase up to a factor of 4
  • Easy assembly and resassembly

Many years of industrial experience and technical support by laboratory and bench tests ensure that EKagrip friction shims meet any requirements.

fileadmin/esk/plain/ekagrip-e.html

Functional Coatings
Material properties EKagrip® 10 EKagrip® 25 EKagrip® 35
Delivery form Shim with
EKagrip® 10
coating
Shim with
EKagrip® 25
coating
Shim with
EKagrip® 35
coating
Color silver gray metallic silver gray metallic silver gray metallic
Shim material (preferably) C 75 S
(acc. to EN 10132-4)
C 75 S
(acc. to EN 10132-4)
C 75 S
(acc. to EN 10132-4)
Thickness d of shim Standard 0.1 mm ± 0.01 mm (others upon request) Standard 0.1 mm ± 0.01 mm (others upon request) Standard 0.1 mm ± 0.01 mm (others upon request)
Base part production by Laser cutting or
stamping
Laser cutting or
stamping
Laser cutting or
stamping
Matrix material Electroless nickel
phosphorus
Electroless nickel
phosphorus
Electroless nickel
phosphorus
Hard particle Diamond Diamond Diamond
Mean particle size 10 µm 25 µm 35 µm
avg. concentration of diamonds on the surface 8-16% 8-25% 10-30%
Heat treatment 150°C / 350°C 150°C / 350°C 150°C / 350°C
Hardness of nickelphosphorus matrix 600 / 900 HV 0.025 600 / 900 HV 0.025 600 / 900 HV 0.025
Thickness of matrix x 5-9 µm 13-17 µm 14-22 µm
Total layer thickness y 10-20 µm 25-35 µm 35-50 µm
Total thickness of coated shim (based on uncoated shim 0.1 mm ± 0.01 mm) d+2y. 0.13 mm ± 0.02 mm 0.16 mm ± 0.02 mm 0.185 mm ± 0.025 mm
Application requirements
Surface roughness Rz or average surface finish Ra of counterpart ( transversal to direction of machining ) Rz < 10 µm
Ra < 1,6 µm
Rz < 25 µm
Ra < 3,2 µm
Rz < 35 µm
Ra < 6,3 µm
Min. contact pressure P > 50 MPa P > 50 MPa P > 50 MPa
Max. service temperature 400°C 400°C 400°C