Gearbox Seal Technology

• Low friction
• Ultra narrow design
• Teflon lined Lip
• Spring-less designs

Race-tec NAK has developed a number of low friction, high performance design variants to cope with the various demands of gearbox applications, whether it be pressure, eccentricity, or both.

The majority of seal are designed to press fit into housings, however, were space is premium, the seals can be bonded directly to housing assemblies.

PTFE lined seal can be designed with uni-directional hydrodynamic features, alternatively, low friction bi-directional rubber lip designs can be offered.

Performance Features

Materials

The elastomer can be any of the common compounds, Nitrile (NBR), Hydrogenated Nitrile (HNBR), Fluoroelastomers (FKM).

The PTFE selected may be basic “virgin” PTFE through a range of filled and special grades, which are designed and selected according to the application requirements.

Seal housings/bodies can be supplied using aluminium alloy, titanium, stainless steel, or standard mild steel.

Technical Features

The standard PTFE lined seals for have been developed to offer the lowest running friction; consistently 40-60% less power loss than most other seal types, and are also more forgiving of the manufacturing variations found in adjacent components.

Through the extensive use of non-linear finite element simulation, and in house testing, output seals have been developed to cope with high eccentricity and pressure up to 5 bar.

The PL6 spring-less design was developed as an output seal to offer ultra-narrow seals of radial section less than 4mm. This design offers further friction reduction over first generation PL seals and is capable of operating with eccentricity up to 0.40mm.

For very demanding applications, where dirt ingress is a problem, a third axial lip can be added.

Applications

Race-Tec MotorSport race proven custom sealing