Hydropower – Ceramet

BEST FIT OF CERAMET BEARINGS IN HYDROPOWER EQUIPMENT

Wicket Gate bearings and another regulating mechanism
Linkage bearings and thrush washers
Operating Ring wear pads
Servomotors bearings and washers
Kaplan Runner Hub bearings
Gates
Chains
Sluices
Butterfly or spherical valves
Cylinders

MECHANICAL PROPERTIES & APPLICATION DATA

CER.BM 441; 442* material characteristics *Same base alloy, with running in film
Compressive Strength [MPa]	300	Max. PV dry [N/mm2 x m/s]	1
Hardness [HB 2.5/31,25/15], min.	40	Typical coefficient of friction, dry	0.10 – 0.20
Density [g/cm3]	6.2	Typical coefficient of friction, wet	0.10 – 0.15
Type of solid lubricant	C	Service temperature min/max [°C]	-150 / 280
Max. static load [MPa]	290	Min. hardness counter material [HB]	250
Max. dynamic load [MPa]	100	Recommended surface roughness of counter material Ra [µm]	0.2 – 0.8
Max. sliding speed, dry [m/s]	0.5	Recommended surface roughness of counter material Ra [µm]	0.2 – 0.8
Carrier linear coeff. of thermal exp.: 16 (10^-6/K) Important remark: The above-mentioned material properties, in particular friction coefficients, are not assured properties. they are to be used only as guidelines for the selection of materials.

ADVANTAGES

Maintenance-free service
Inexpensive, easy, and fast to replace
Suitable for intermittent movements
Allowing for enormous variability in shapes and sizes
Great emergency running properties
Performing particularly well in wet environments
No water absorption, maximum dimensional accuracy, and stability
Providing no threat to the environment by oil contamination

Ceramet self-lubricating plain bearings and bushings with a sintered sliding layer are especially suitable for continuous operations in a wet environment. Sintering technology allows for the construction and manufacturing of a wide range of complex shapes with consistent self-lubricating properties throughout the whole lifecycle of critical moving parts. Sintered materials provide reliable and high-performance no-grease solutions.