- Contact Person : Mr. YU liang
- Company Name : Nanjing Younarui Bearing Co., Ltd.
- Tel : 86-25-52271857
- Fax : 86-25-52271957
- Address : Jiangsu,nanjing,zhongshan road 369
- Country/Region : China
- Zip : 210002
Related Product Searches:Yoke Type Track Rollers CF20,High Quality,track rollers CF20 , bearing CF20 ,CF20
Yoke type track rollers
Features
Outside surface profile of the outer ring
Yoke type track rollers without inner ring
With cage, axial guidance of outer ring
Sealing
Lubrication
Yoke type track rollers with inner ring
With cage, with full complement needle roller or cylindrical roller set
Axial guidance of outer ring
Anti-corrosion protection
Sealing
Lubrication
Operating temperature
Suffixes
Yoke type track rollers are single or double row units mounted on shafts or studs. They comprise thick-walled outer rings with a profiled outside surface and needle roller and cage assemblies or full complement needle roller or cylindrical roller sets.
Yoke type track rollers can support high radial loads as well as axial loads arising from slight misalignment and skewed running;
they are suitable for applications such as cam gears, bed ways and conveying equipment.
The bearings are available with and without an inner ring and in both sealed and open versions.
Series PWTR is supplied as an X-life design. Due to a modified material and the optimised raceway geometry of the outer rings, the basic rating life has been increased by up to 30%.
The static and dynamic load carrying capacity has also been increased.
At the same time, the stress placed on the mating track has been reduced as a result of the optimised lateral surface profile and its improved surface quality.
Due to these measures, highly robust bearing arrangements with an extended operating life can be achieved.
Outside surface profile of
the outer ring
Yoke type track rollers with a crowned outside surface are predominantly used in practice since they are often inclined in relation to the mating track and edge stresses must be avoided.
The radius of curvature of the outside surface is R = 500 mm. In the case of NNTR..-2ZL, the radius is indicated in the dimension table.
The series NATR..-PP, NATV..-PP, NUTR and PWTR..-2RS have an outside surface with the optimised INA profile.
In yoke type track rollers with this curvature profile (Figure to Figure ):
the Hertzian pressure is lower
edge loading under tilting is lower
wear of the mating track is reduced
the operating life of the mating track is extended.
Yoke type track rollers without inner ring
Yoke type track rollers RSTO and RNA22..-2RSR do not have an inner ring. They are particularly compact but require a hardened and ground raceway on the shaft or stud.
Series RSTO is not self-retaining. This means that the outer ring and the needle roller and cage assembly can be fitted independently of each other.
With cage,
axial guidance of outer ring
In RSTO and RNA22..-2RSR, the rolling elements are guided by a cage. These designs do not have axial guidance of the outer ring. Axial guidance of the outer ring and needle roller and cage assembly must be provided in the adjacent component; see section link.
Sealing
RSTO is not sealed, series RNA22..-2RSR has lip seals on both sides.
Lubrication
The bearings are greased with a lithium complex soap grease to GA08.
Yoke type track rollers with inner ring
These yoke type track rollers are used if the shaft or stud does not have a hardened and ground raceway.
STO is not self-retaining. This means that the outer ring, needle roller and cage assembly and inner ring can be fitted independently of each other.
With cage,with full complement needle roller or cylindrical roller set
The series STO, NA22..-2RSR, NATR and NATR..-PP have a cage. The series NATV and NATV..-PP have a full complement needle roller set, while yoke type track rollers NUTR, PWTR..-2RS and NNTR..-2ZL have a full complement cylindrical roller set.
Bearings without a cage have the largest possible number of rolling elements and therefore have particularly high load carrying capacity. Due to the kinematic conditions, however, the speeds achievable with these bearings are somewhat lower than those achievable with the cage-guided yoke type track rollers.
Axial guidance of outer ring
STO and NA22..-2RSR do not have axial guidance of the outer ring. This must be provided in the adjacent construction; see section link.
In NATR and NATV, axial guidance is provided by contact washers and axial plain washers. In NUTR, the outer ring is guided by the rolling elements, in PWTR..-2RS and NNTR..-2ZL it is guided by the central rib and the rolling elements.
Anti-corrosion protection
Yoke type track rollers PWTR..-2RS-RR are protected against corrosion by the special coating Corrotect®. For a description of the coating, see link.
Sealing
The seals used in yoke type track rollers are shown in the following table.
Nanjing Younarui Bearing Co., Ltd. office is specialized in bearing export, production, selling and after-service. Our principle is customer First, quality First! We can supply a large variety of bearings (over 5000), including 1. Spherical roller bearing 2. Deep groove ball bearing 3. Needle roller bearing 4. Thrust ball bearing 5. Taper roller bearing 6. Cylindrical bearing 7. Linear bearing 8. Plain shaft(Axis ) series 9. Linear guide bearing 10. Rod end bearing 11.Joint bearing 12. Radial bearing These bearings are widely used for 1. Construction machines 2. Transmission equipments 3. Automobile industry, etc. Your trustworthy supplier and partner! !
Yoke Type Track Rollers CF20