Ratings-Worm Gear Boxes

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For Worm Gear Box selection Prime mover’s maximum power rating can be taken as base for determining the actual load. The Gear Selection is made by comparing actual transmitted loads with catalogue ratings. It is important to realise that are based on standard set of load conditions, which invariably change for different conditions. Therefore service factor must be used to calculate a theoratical transmitted load or equivalent load, before comparing with catalogue rating. For calculating the same, apply the formula:-

Equivalent Load = Actual Load x Service Factor

These are some Suggestions to improve the performance of your worm speed reducers, worm gear boxes or worm geared drives. However, please note that these are suggestions based on standard set of conditions. If these are different from your results, please rely on your results and inform us.

Thermal Service Factor
(Ambient Temperature)

Temp in °C

10

 20 30 40 50 60
Factor

0.87

1.00

1.16

1.35

1.62

1.97

Mechanical Service Factor

Prime Mover

Duration
of Service
Hours/Day

Uniform Loads

Moderate

Shocks

Heavy Shocks
Electric
Motor,Steam
Engine,
or Hydraulic
Motor.

Under 3

0.8

1

1.5

3 to 10

1

1.25

1.75

Over 10

1.25

1.5

2
Single
Cylinder
Internal
Combustion
Engine

Under 3

1.25

1.5

2

3 to 10

1.5

1.75

2.25

Over 10

1.75

2

2.5

HORSE POWER RATING

The values below represent the maximum Horse Power Ratings of AGNEE Worm Gear Boxes at service Factor:1

Nominal Ratio Input RPM Output RPM Maximum Prime Mover’s Power in Horse Power
Models
30 40 50 60 75 85 100 125 150 175 200 250 300 350 430
5:1 1500 300 0.73 1.66 3.63 5.40 7.35 14.40 17.07 27.87 51.20 68.67 93.87 161.33 240.00 332.00 –
1000 200 0.58 1.31 2.88 4.28 5.64 11.49 13.73 22.40 39.73 55.47 75.73 130.40 193.33 269.33 –
750 150 – – – 3.60 4.93 9.73 11.47 18.80 34.67 46.53 63.73 110.27 164.80 229.20 –
10:1 1500 150 0.58 1.40 2.51 3.47 5.09 8.39 11.15 21.20 30.80 42.53 55.07 77.87 141.25 190.00 397.50
1000 100 0.45 1.10 1.96 2.72 4.00 6.59 8.81 16.80 24.27 33.60 43.47 65.60 118.93 160.00 337.33
750 75 – – – 2.27 3.33 5.60 7.33 14.00 20.27 28.13 36.40 55.87 100.13 134.93 282.93
15:1 1500 100 0.44 1.26 2.00 3.07 4.95 7.49 8.89 15.07 26.67 36.80 49.47 74.00 105.87 194.67 322.67
1000 66.7 0.34 0.98 1.55 2.32 3.88 5.88 7.03 11.73 20.93 29.07 39.07 58.13 83.33 152.00 253.33
750 50 – – – 2.00 3.20 4.93 5.87 10.00 17.47 24.13 32.40 48.67 69.60 128.00 212.67
20:1 1500 75 0.40 0.87 1.87 3.07 3.69 5.55 7.75 13.87 21.20 28.67 39.20 70.40 110.00 157.33 274.67
1000 50 0.32 0.68 1.47 2.32 2.88 4.35 6.12 10.96 16.80 22.53 30.80 55.47 86.67 123.33 214.67
750 38 – – – 2.00 2.40 3.60 5.07 9.07 13.87 18.80 25.60 46.13 71.87 102.93 180.27
25:1 1500 60 0.34 0.75 1.47 2.36 3.54 5.05 6.35 10.67 16.67 26.27 35.87 58.00 87.87 124.13 202.67
1000 40 0.28 0.67 1.20 1.93 2.89 4.13 5.04 8.41 13.20 20.53 28.13 45.73 68.00 97.33 160.00
750 30 – – – 1.60 2.40 3.47 4.27 7.07 10.93 17.20 23.47 37.87 57.60 81.20 132.53
30:1 1500 50 0.29 0.69 1.25 1.95 3.08 4.67 5.67 9.93 15.73 21.60 28.80 49.20 79.07 112.53 197.33
1000 33.3 0.23 0.61 0.99 1.55 2.43 3.68 4.51 7.73 11.76 16.40 22.67 38.67 61.87 88.13 154.67
750 25 – – – 1.33 2.00 3.20 3.73 6.67 10.40 14.27 18.80 32.13 51.60 73.47 129.07
40:1 1500 37.5 0.22 0.57 0.93 1.41 2.24 3.40 4.67 7.63 12.85 18.27 23.87 42.40 66.53 93.33 133.33
1000 25 0.17 0.45 0.75 1.12 1.77 2.69 3.71 6.04 9.80 14.13 18.80 33.33 52.00 72.93 103.73
750 19 – – – 0.93 1.47 2.267 3.20 5.07 8.53 12.00 15.73 27.87 43.73 61.20 86.80
50:1 1500 30 0.15 0.41 0.71 1.09 1.75 2.55 3.57 6.32 10.41 15.87 20.93 35.47 53.87 77.2 145.33
1000 20 0.12 0.30 0.55 0.87 1.37 2.03 2.84 5.00 8.21 12.41 16.40 27.77 42.13 59.20 104.40
750 15 – – – 0.67 1.20 1.73 2.40 4.27 6.93 10.53 13.87 23.33 35.47 50.67 95.20
60:1 1500 15 0.13 0.32 0.51 0.80 1.33 2.07 3.05 5.55 8.32 12.53 17.60 30.00 45.87 70.13 92.80
1000 16.7 0.10 0.25 0.39 0.60 1.00 1.52 2.40 4.36 6.55 9.84 13.87 23.47 35.87 54.67 89.33
750 13 – – – 0.53 0.93 1.33 2.13 3.73 5.60 8.40 11.73 19.73 30.13 45.87 60.93
70:1 1500 21.4 0.12 0.27 0.47 0.71 1.08 1.57 2.64 4.53 7.13 10.33 14.53 24.67 39.60 58.40 98.93
1000 14.3 0.09 0.22 0.34 0.56 0.81 1.28 2.08 3.56 5.61 8.09 11.32 19.33 30.80 45.33 19.33
750 11 – – – 0.40 0.67 0.93 1.73 3.07 4.80 6.93 9.73 16.27 26.00 38.40 64.93
  • The models relate to Centre Distances in millimeter.
  • The Ratios mentioned above are nominal and the actual may vary by upto +10%
  • The Model no. 50 to 85 are available in adaptable Bodies, while 100 to 350 are in Horizontal & Vertical Output Shafts Bodies
  • For overdriven Units, it is necessary to derate by 5% for all the ratios up to 30:1 inclusive and by 15% for 35:1 and higher ratios.
  • Worm Shafts and Worm Gears are also available without bodies.