Special characteristics:

• The tappet is directly activated
• Very high rigidity
• Small moving mass due to the manufacturing process
• High quality surfaces and heat treatment processes in cam contact in order to achieve low friction and high anti-wear protection
• Highly cost-effective

Tappet, standard design

• Very small wall thicknesses using formed steel for the housing and guide funnel allow high fatigue strength and rigidity with small moving mass

Bottom drain tappet

• Oil reservoir volume can be used better – improved functional behaviour during engine startup and running

Anti-drain tappet

• While the engine is switched off, oil cannot flow out of the outer reservoir – this gives improved functional behaviour during engine startup and running.

Labyrinth tappet

• Combination of anti-drain and bottom drain mechanisms
• Improved functional behaviour during engine startup and running

3CF tappet design

• With cylindrical cam contact face – anti-rotation mechanism
• Simple oil supply
• 80% reduction in oil throughput by means of plunger guidance
• Low contact pressures in cam contact
• High acceleration of opening and closing possible
• More effective valve lift characteristics possible with identical plunger diameter
• Identical valve lift characteristics possible with smaller plunger diameter
• Very low plunger mass
• Very high rigidity
• Reduced frictional power