12-20 1091/1-32272

Specifications
Part Number 12-20 1091/1-32272
Gear Internal toothed
Geometry
Weight(G) 201
Outside diameter outer ring(Da) 47.18
Inside diameter inner ring(di) 39.133
inside diameter outer ring(Di) 43.130
Outside diameter inner ring (da) 43.012
Outside bole-hole circle diameter (La)
intside bole-hole circle diameter (Li)
Mounting Holes
Pitch circle diameter Outer Ring (La) 45.62
Number Holes in Outer Ring (na) 20
Pitch circle diameter Inner Ring (Li) 41.5
Number Holes in Inner Ring (ni) 36
Gearing and Tooth Forces
Pitch Circle Diameter (do) 39.667
Diametral Pitch (Pd) 3
Number of Teeth (Z2) 119
Permissible tooth force (fz norm)(lbs) 4080
Maximum perissible tooth force (fz max)(lbs) 8940
Load Rating
Static Co rad(lbs) 151296
Static Co Max(lbs) 353400
Dynamic C rad(lbs) 50357
Dynamic C Max(lbs) 50582
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