Bearing scraping

NOVEXA has developed a fast and efficient on-site scraping technique with portable equipment. While a carrier bearing scraping operation is carried out in 3 days using the usual techniques by hand,
NOVEXA can provide you with this service in 4 to 5 hours.

We offer our services on bearing scraping:

Crusher Carriers
Pinion (fixed bearing and movable bearing)
Oven pebbles
Finally all bronze type bearings, regulates and various

Preparation and installation of the cradle.

De-centering of the bearing and lifting
of the assembly using 2
hydraulic jacks.

A preliminary measurement has been made bearing
in place.
Verification of the bearing surface and
condition is necessary (control of
bearing to blue).

-> Max bearing surface : 1/5 of the
perimeter of the bearing

-> Before machining, the observed span
represents more than 3/5 of the perimeter
of the bearing.

Cutting is done for
preparation for machining.

Supporting surface : 1/5

Remains at the entrance : 2/1000 mm
Draft value up to
0,1 mm To 500 mm

Machining operation in progress using
machines equipped with special
discs.

Working in the workshop.

On-site machining by
Novexa has the advantage of
bearing machining in 5 hours maximum.

Scraping at the hand requires about
40 hours.

The photo used comes from another
construction site on a furnace landing.

This shows the blue check
carried out after scraping.

Job finished.
No facets are to be deplored.

A blue range check and a
verification of remains will then be produced by Novexa.

A titre d‘information et dans le cas où
les dépouilles ne sont pas suffisantes,
le risque d‘échauffement du palier
est bien réel.

Le palier peut fondre rapidement
(au-delà de 120°C) et gripper sur l‘arbre.

Le temps d‘arrêt est alors très long.

Our dépouilles entry and exit respect the rules in force in the industry:

Draft of 2/1000 mm in diameter (inlet and outlet)
Range control with blue (1/7 on oven rollers, 1/5 on crusher bearings)
Les dépouilles dépendent de la position du pignon (releveur ou rabatteur)

We supervise the services of level measurement (even theodolite if axis measurements), lifting of the crusher, dismantling and reassembly of the bearings, verification of the condition of the expansion rollers on the free bearing and of the temperature probes and finally advice on the lubrication circuit.

NOVEXA can provide the appropriate cradle and shims for upgrading a rotating tube.

Enfin, nous proposons dans le cadre du programme de formation un transfert de compétence sur le grattage et les dépouilles pour cette activité très technique.

The Novexa offer

Specialists in the management of wear of rotating tubes (gears and tires)

Contact us

Our teams are at your disposal.
Enquire with our experts

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