Helical Gearboxes RD - Varvel SpA
Helical Gearboxes RD - Varvel SpA
Helical Gearboxes RD - Varvel SpA
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<strong>Helical</strong> <strong>Gearboxes</strong> <strong>RD</strong><br />
COMPONENTS & CONVERSION FACTORS<br />
Two Stage Gearbo - <strong>RD</strong>02 Three Stage Gearbox - <strong>RD</strong>03<br />
A – IEC or NEMA motor flange<br />
B - 2 stage input cover & T3 gear<br />
C - Housing & T4. T5. T6 gears<br />
D - Output flange<br />
1 lb = 4.45 N<br />
1 lb = 0.454 kg<br />
1 oz = 0.028 kg<br />
- 18 -<br />
A - IEC or NEMA motor flange<br />
B - 3 stage input cover & T1. T 2. T3 gears<br />
C - Housing & T4. T5. T6 gears<br />
D - Output flange<br />
Imperial CONVERSIONS Metric<br />
HP (60Hz) = kW (50Hz) × 1.341 × 1.2<br />
HP (50 Hz) = kW (50 Hz) × 1.341<br />
HP = in-lb × RPM : (113,350 x eff.)<br />
1 in-lb = 0.113 Nm<br />
1 ft-lb = 1.355 Nm<br />
ft-lb = 108 × k × HP × eff. × ratio<br />
in-lb = 9 × k × HP × eff. × ratio<br />
= 8000 × k × HP × eff. × o/p speed<br />
(where k = motor pole #, i.e. 2, 4, 6, 8)<br />
Mass<br />
&<br />
Force<br />
1 N = 0.225 lb<br />
1 kg = 2.205 lb<br />
1 kg = 35.27 oz<br />
Power kW (50 Hz) = HP (60 Hz) × 0.745 × 0.833<br />
kW (50 Hz) = HP (50 Hz) × 0.745<br />
kW = Nm × RPM : (9550 × eff.)<br />
Torque 1 Nm = 8.851 in-lb<br />
1 Nm = 0.738 ft-lb<br />
Nm = 9550 × kW × eff. : RPM<br />
1 qt (US) = 0.946 litre Volume 1 litre = 1.057 qt (US)
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