Cam Follower Bearings

Product Description

NATV and NATV...PP type yoke type track rollers
NATV series yoke type track roller is basically the same as NATR series. The only difference is that NATV is full complement needle roller type. Therefore it can sustain heavier load under low speed. Frequent lubricating should be noticed. NATV...PP is a series with sealing ring structure.
NUTR type yoke type track rollers

NUTR series yoke type track roller is double row full roller bearing with retaining edge guiding outer ring. All the parts of the bearing are pressed into the sealing cage of outer ring forming a complete unit, the sealing cage, together with the thrust retaining ring form an efficient gap sealing. Very heavy load can be used on this yoke type track rollers. Even with very high speed, it can bear impact axle load due to its axle guidance of its rolling bodies.

Center adjustability
The yoke type track roller with diameter of cylindrical shape have very small center adjustability. With low load, the center adjustability is 3-4'which with middle and heavy load, it is 5-7'. The yoke type track with diameter of arc shape have a center adjustability of 15-20'. For bigger angle variation, the edge effect will increase with the different loads. This will decrease the life of the bearing.
Curve roller is composed of a stud used as the tray of a group of rollers and a thick wall outer ring. The shoulder of the stud and the surface retaining ring on the stud form the guiding faces on the two sides of the outer ring. When the curve rollers are running on the plain tray or cam wheel, the inner stress on the rollers will increase due to the deformation of the outer ring. Therefore the rated load should be selected as curve roller column in this operational case.

Structure
KR
Curve rollers radically guided by the retaining edge and ring
KR - PP
Curve rollers with sealing ring
KRE
Curve rollers with eccentric sleeve
KRE - PP
Curve rollers with eccentric sleeve and retaining sleeve
KRV
Curve rollers radically guided by the retaining edge and ring, Full complement needle roller type
KRV - PP
Curve rollers with sealing ring
KRVE

Curve rollers with eccentric sleeve
KRVE - PP
Curve rollers with eccentric sleeve and retaining sleeve
NUKR
Curve rollers axile guided by rolling bodies, full roller type
NUKRE
Curve rollers with eccentric sleeve
CR
Inch series curve rollers
KR and KR...PP type curve rollers
In KR, KR...PP curve rollers, the rolling needles are guided by the retainer while the outer ring is guided by the retaining ring shaft on the stud. These rollers are suitable for heave load and middle speed revolution. The lubricating can last a long period due to the bigger grease storage space inside the bearing. KR...PP curve roller is of contacting sealing structure. The operational temperature is -30? ? -100? ? .

KR and KR...PP type curve rollers
KRV, KRV...PP curve rollers have the same structures as KR, KR...PP type but they are filled with needle bearings. They can be used to bear heavier load and run with lower speed. They should be lubricated very often.
NUKR type curve rollers
This series curve rollers are of double lines full-roller structure. Like all cylindrical roller bearings, they are composed of outer ring cages pressed in the rolling bodies axle guidance and the retaining edge steps which forms highly effective gap sealing.
Especially heavy load can be borne by these rollers and also they can sustain the axile load impact due to the axile guidance by the rollers.
KRE, KRE...PP, KREV, KREV...PP, NUKRE type curve rollers
Curve rollers of all these types can be supplied with eccentric sleeve. The rollers can be adjusted by adjusting the stud end face. The top of the eccentric sleeve is situated at the place where HSB is marked. Lubricating grease can be made through the both ends of the stud.