Normal Force in a Spur Gear Pair under Loading from the Driving Gear of a Korin CA-15 Machine at PT XYZ
DOI:
https://doi.org/10.67922/s6jtg505Keywords:
spur gear transmission, nominal load estimation, tangential force, normal force, analytical mechanics, packaging machineryAbstract
Estimating gear transmission loads provides a basis for mechanical assessment, but equipment specifications alone do not establish actual tooth forces. This study aimed to estimate the nominal tangential and normal forces in the spur gear transmission of a Korin CA-15 packing machine at PT XYZ, Indonesia. A descriptive case study combined interviews and direct observation with deterministic mechanical calculations. The analysis adopted a motor power of 0.55 kW, a gear rotational speed of 1480 rpm, a pitch diameter of 32 mm, and an assumed operating pressure angle of 20°. Calculations used SI units and retained intermediate numerical precision. The resulting pitch-line velocity was 2.480 m/s, with nominal tangential and normal forces of 221.795 N and 236.030 N, respectively. These values represent analytical estimates under steady, frictionless conditions rather than measured operating loads. The study provides a reproducible loading reference with explicit assumptions and distinguishes resultant mesh force from individual tooth loading. This reference can support subsequent transmission assessment after confirmation of the operating inputs. However, rated motor specifications, the unverified pressure angle, and the absence of independent measurements limit its interpretation. Direct measurements of gear shaft speed and transmitted torque are required before using the estimates to assess actual loading or component strength.
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