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1. Modeling formula: (1) PIN = P1Xf (the number of starts and stops per hour is not greater than 20 times / hour)
(2) PIN = 1.2XP1Xf (the number of starts and stops per hour 21 ~ 60 times / hour)
(1) PIN ≤ PN
Modeling power must be less than or equal to the permitted power
Eq: PIN is the selected power, P1 is the actual power required, f is the use factor, PN is the permitted power.
Model Selection
1. Calculation Formula: (1)PIN=P1Xf (Starts/stops per hour ≤20 times/hour)
(2)PIN=1.2XP1Xf (Starts/stops per hour 21~60 times/hour)
(1)PIN≤PN
Rated power must be less than or equal to allowable power
Where: PIN is selection power, P1 is actual required power, f is service factor, PN is allowable power.
Service Factor f
Thermal Power Verification
1. Thermal Power Calculation: PGN=PGXf1×f2
PGN>P1 (Natural Cooling)
PGN Where: f1 is ambient temperature coefficient, f2 is continuous duty coefficient, PG is heat capacity of gearbox, P1 is actual working power required, PGN is calculated heat capacity of gearbox. 2. Ambient Temperature Coefficient f1 3. Continuous Duty Coefficient f2 Heat Capacity PG (Natural Cooling) General Technical Specifications 1. Keys and keyways comply with GB1095-79 and GB1096-79 standards; keyway width tolerance: shaft N9, hub JS9. 2. Output/input shaft center holes are generally threaded, specifications as follows: D=11~13mm Thread M3 D>24~30mm Thread M10 >13~16mm Thread M5 >30~38mm Thread M12 >16~21mm Thread M6 >38~50mm Thread M16 >21~24mm Thread M8 >50~85mm Thread M20 3. In outline dimension drawings, under permitted speed and torque conditions, output shaft may serve as input shaft for speed-increasing transmission.
