September 13, 2017
GGB to Present Paper, Exhibit at HYDRO 2017
GGB Bearing Technology principal engineer for tribological materials Michael Kim will present a...
From September 25, 2017 to September 27, 2017
CTI Symposium China
Visit us at stand #46
From October 9, 2017 to October 13, 2017
MSV Brno 2017
Visit us at hall V, stand 125
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AT A GLANCE
GGB DP4 high-performance, metal-polymer flat thrust washers successfully replaced needle roller bearings in a rear braking system. The system combines mechanical and hydraulic functions to apply a braking force when a vehicle is parked.
Torque generated by depressing a floor-mounted pedal or pulling a lever is converted to a clamping action by a shaft immersed in brake fluid that rotates three balls into a wedge-like mechanism.
The bearings must withstand forces of up to 15 000 N / 3 300 lbs and reduce friction created by the relative movement of the shaft, rotating up to 30 degrees every second or less.
The lead-free GGB DP4 thrust washers were benchmarked, compared with alternative options and ultimately used to replace the needle roller bearings.
The structure of GGB DP4 composite bearings consists of a rigid steel backing, to which is bonded a porous bronze sinter interlayer impregnated and overlaid with a filled PTFE bearing layer. This highly resistant composite bearing structure can withstand specific loads of up to 250 MPa / 36 000 psi.
In this application, the excellent self-lubricating properties of GGB DP4 metal-polymer thrust washer bearings enable the following benefits to be obtained:
Gearbox Shifting Towers and Shifter Forks
Isolator Pulley Dampers
Shock Absorbers and Struts
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