Coliviile cu ace sunt ansambluri cu ace pe unul sau pe două rânduri.
Deoarece gabaritul lor radial corespunde diametrului rolelor sau acelor, aceste elemente permit suspensii cu un gabarit radial extrem de redus. Ele sunt foarte portante, adecvate pentru turaţii înalte şi sunt deosebit de uşor de montat.

Prin prelucrarea foarte precisă a căilor de rulare, suspensiile ating preciziide concentricitate înalte.

Jocul radial al lagărului se poate influenţa prin gruparea acelor sau rolelor, precum şi prin toleranţa arborelui şi a carcasei.

Coliviile cu ace necesită căi de rulare tratate termic şi rectificate, atât pe arbore cât şi în carcasă.

Needle roller and cage assemblies are single or double row units comprising cages and needle rollers.
Since their radial section is no greater than the diameter of the needle rollers, needle roller and cage assemblies allow bearing arrangements with a very small radial design envelope to be achieved. They have very high load carrying capacity, are suitable for high speeds and can be easily fitted.

If the raceways are produced to high geometrical accuracy, bearing arrangements with high runout accuracy can be achieved.

The radial internal clearance can be influenced by the needle roller sort and by the shaft and housing tolerance.

Needle roller and cage assemblies require a hardened and ground raceway on the shaft and in the housing.

Needle roller and cage assemblies are single or double row units comprising cages and needle rollers.
Since their radial section is no greater than the diameter of the needle rollers, needle roller and cage assemblies allow bearing arrangements with a very small radial design envelope to be achieved. They have very high load carrying capacity, are suitable for high speeds and can be easily fitted.

If the raceways are produced to high geometrical accuracy, bearing arrangements with high runout accuracy can be achieved.

The radial internal clearance can be influenced by the needle roller sort and by the shaft and housing tolerance.

Needle roller and cage assemblies require a hardened and ground raceway on the shaft and in the housing.