TECHNICAL DATA |
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| Reduction Ratio (i) | Actual reduction ratio provided by our
standard manufacturing for any size of gear unit which is the ratio of
input speed to output speed. |
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| Rated Torque (Tr) | Output torque value for gear stresses corresponding
to the limit value conventionally considered as corresponding to theoretically
unlimited life The values shown in the following selection table takes
into account both the bending strength and surface strength of the tooth
flanks |
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| Thermal Rating (Pt) Kw | This is the continuous power transmitted by a gear unit with splash lubrication and maximum oil temperature of 900C at ambient temperature. |
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| Input Speed | The input speed taken as basis for selection table
is 1400 RPM either for the gearbox for the gear motor maximum recommended
input speed is 1800 RPM. However for bigger size gear boxes from model
380 onwards the maximum input speed values are limited and to be verified
with Top Gear Transmissions before selection. |
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| Efficiency | This normally is 0.96/0.97 for each stage but reduces
with an increase in speed and decrease in output torque for multistage
gear boxes it has to be multiplied according to stages e.g. for 2 stage
0.96x0.96=0.92 |
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| Service Factor | It has been introduced to take into account the characteristics
and working hours per day of the driven machine. The table followed is
related to machines driven by an electronic motor takes into accounts
the frequency of start. |
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| Allowable Temperature | Standard gear units are suitable for oil temperature between -200C& +900C. For temperature conditions lower than -200C and above 900C special material and seals may be necessary which are provided upon request. |
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| Loads on Output Shaft | Loads on output Shaft or input shaft applied depending on applications are defined for an ISO L 10 bearing life corresponding to n2h=105 which may be checked as per procedure shown in step No. 5 of selection. |
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