Guhitamo nezaamavuta yo gusabani ingenzi, nkamavuta yoroshye cyane ashobora kwimuka kure yakarere gakeneye gusigwa, mugihe amavuta akomeye ntashobora kwimuka neza mubice bigomba gusiga amavuta.

Ubusanzwe, amavuta akomeye agaragazwa nagaciro kayo kandi agasuzumwa hifashishijwe imbonerahamwe yerekana amanota ya National Lubricating Grease Institute (NLGI).Umubare wa NLGI ni igipimo cyo guhuza amavuta nkuko bigaragazwa nagaciro kayo kinjira.

Uwitekaikizamini cyo kwinjiraipima uburyo cone isanzwe igwa mubyitegererezo byamavuta muri kimwe cya cumi cya milimetero.Buri cyiciro cya NLGI gihuye nigikorwa cyihariye cyo gucengera.Indangagaciro zo kwinjira cyane, nkizirenga 355, zerekana umubare muto wa NLGI.Igipimo cya NLGI kiri hagati ya 000 (igice cya fluid) kugeza kuri 6 (blok ikomeye nka cheddar ikwirakwizwa).

Amavuta yibanze yubunini hamwe nubunini bwibyibushye bigira uruhare runini murwego rwa NLGI rwamavuta yarangije.Umubyimba mubikorwa byamavuta nka sponge, urekura amavuta yo kwisiga (amavuta yibanze nainyongera) iyo imbaraga zikoreshejwe.

Iyo urwego ruhoraho, niko urwanya amavuta ni ukurekura amavuta yo kwisiga ku mbaraga.Amavuta afite uburinganire buke azarekura amavuta byoroshye.Guhuza amavuta meza ni ngombwa kugirango harebwe niba urugero rwiza rwamavuta rutangwa kandi rugakomeza muri sisitemu yo gusiga neza. 

Icyiciro cya NLGI 000-0

Amavuta agwa munsi yibi byiciro ashyirwa mumazi kugeza kuri kimwe cya kabiri cyamazi kandi akunda kuba make kurusha ayandi.Aya manota yamavuta arashobora kugirira akamaro mugihe gikomatanyirijwe hamwe, aho kwimuka kwamavuta atari ikibazo.Kurugero, agasanduku k'ibikoresho gasaba amavuta muri uru rwego rwa NLGI kugirango uhore wuzuza amavuta muri zone.

NLGI Icyiciro cya 1-3

Amavuta hamwe nicyiciro cya NLGI cya 1 afite ubudahwema nka paste yinyanya, aho amavuta afite NLGI ya 3 afite ubudahwema nkamavuta.Amavuta akoreshwa cyane, nkayakoreshejwe mumodoka, yakoresha amavuta ari NLGI icyiciro cya 2, gifite ubukana bwamavuta yintoki.Impamyabumenyi muri uru rwego irashobora gukora mubushyuhe bwo hejuru kandi kumuvuduko mwinshi kuruta NLGI amanota 000-0.Amavuta yo gufatamubisanzwe NLGI icyiciro cya 1,2, cyangwa 3.

NLGI Icyiciro cya 4-6

Ibyiciro bya NLGI byashyizwe mubice 4-6 bifite aho bihurira nka ice cream, fudge cyangwa foromaje ya cheddar.Kubikoresho bigenda kumuvuduko mwinshi (birenze 15,000 kuzunguruka kumunota) hagomba gutekerezwa amavuta ya NLGI yo mucyiciro cya 4.Ibi bikoresho bifite ubushwashwanutsi nubushyuhe bwiyongera, kubwibyo birakomeye, amavuta akoreshwa.Kunyuza amavuta byoroshye gusunikwa kure yikintu uko kizunguruka, bityo biganisha ku kugabanuka no kwiyongera k'ubushyuhe.Kurugero, Nhe's Rheolube 374C ni amavuta ya NLGI yo mu cyiciro cya 4 akoreshwa muburyo bwihuse bwo gutwara hamwe n'ubushyuhe bwagutse bwa -40 ° C kugeza 150 ° C.Amavuta hamwe na NLGI Icyiciro cya 5 cyangwa 6 ntabwo akoreshwa mubisabwa.