What is a crossed roller bearing
March 4, 2020FH slewing bearing catalogue
March 12, 2020Introduction of slewing gear parameters.
- Name and Code
- Basic parameters
Base circle (db, rb):
Involute circle
Addendum circle (d/ra):
A circle connecting the tooth tips of a gear
Dedendum circle (d/rf):
A circle connected at the bottom of the groove
Tooth thickness (si):
On the di circumference, one tooth or so,The arc length between the two tooth profiles.
Tooth groove width (ei):
On the d circumference, The arc length between the teeth.
Pitch (pi):
Pi=si+ei
Divided circle d (r):
Design gear on the divided circle of the reference circle, p=s+e.
Addendum height (hi):
Dedendum height (hf):
Tooth height h=ha+hf
- Tooth No-Z
- The perimeter of the divided circle-m, πd=zp, d=z(p/π）
Artificial regulation ：m= p/π can only take some simple values, called m. So：d=mz, r = mz/2.
The unit of modulus： mm
It is a basic parameter for the gear’s size, Same tooth no, different modulus, Same divided circle , different modulus
