Grove Gear Products Catalog 8050

Quick Selections

How to Use Based on required output RPM and input motor horsepower, read across chart for the appropriate reducer size. As a rule of thumb, use 1.00 service factor chart for applications having uniform loads with up to 10 hours service duration per day. Use 1.25 service factor chart for longer service or shock loading. These charts are to be considered as guides only. Typically double reduction reducers are selected based on application torque, not necessarily HP. Refer to page 418 or contact Factory with specific application information. Reducer size corresponds to center distances of secondary stage reducer, as shown in the chart below.

Single Reduction

Worm Gear Reducers

1.00 Service Factor Nominal Output

Input Horsepower @ 1750 RPM

Ratio ♠

RPM 1/8 1/6 1/4 1/3 1/2 3/4 1 1-1/2 2

3

5 7-1/2 10 15 20 25

75 23.3 813 813 815 815 821 824 826 830 832** 842 852 860 880 880 8100 8100 100 17.5 813 813 815 815 821 824 826 830* 842 842 852 860 880 8100 8100 150 11.7 813 815 821 821 824 826 830* 832** 842 852 852 880 8100 8100 200 8.75 815 815 821 824 826 830 832 842 842 852 870 880 8100 250 7.00 815 818 821 824 826 830* 832** 842 852 852 880 8100 8100 300 5.83 815 821 824 824 830 832 842 842 852 852 880 8100 8100 400 4.38 821 821 824 826 830* 842 842 852 852 860 8100 8100 500 3.50 821 824 826 830 832 842 842 852 852 880 8100 600 2.92 821 824 826 830 832 842 852 852 860 880 8100 750 2.33 824 824 830 830* 842 842 852 852 870 8100 8100 900 1.94 824 826 830 832 842 842 852 852 880 8100 1000 1.75 824 830 830 832 842 842 852 860 880 8100 1200 1.46 824 830 830* 832 842 852 852 870 880 8100 1500 1.17 830 830 832 842 842 852 860 880 8100 8100 1800 9.72 830 830 832 842 852 852 860 8100 8100 2400 .729 830 830* 842 842 852 852 880 8100 8100 3000 .583 830 830* 842 842 852 852 880 8100 3600 .486 830* 832** 842 852 852 880 8100

Double Reduction

Worm - Worm Gear Reducers

Double Reduction

Helical - Worm Gear Reducers

Nominal

Output

Input Horsepower @ 1750 RPM

Ratio ♠

RPM 1/8 1/6 1/4 1/3 1/2 3/4 1 1-1/2 2

3

5 7-1/2 10 15 20 25

75

23.3 17.5 11.7 8.75 7.00 5.83 4.38 3.50 2.92 2.33 1.94 1.75 1.46 1.17 9.72 .729 .583 .486

813 813 815 818 821 824 830 832** 842 842 852 880 880 8100 8100 813 815 815 821 824 826 830 832** 842 842 852 880 880 8100 815 815 821 824 826 830 832 842 842 852 870 880 8100 815 821 824 824 830 832 842 842 852 852 880 8100 8100

WASHGUARD ® Reducers

100 150 200 250 300

815 821 824 826 830 832** 842 842 852 852 880 8100 818 821 824 826 830* 842 842 852 852 870 8100 8100 821 824 826 830 832 842 842 852 852 880 8100 824 824 830 830* 842 842 852 852 860 880 8100

and GEAR+MOTOR™ Ratio Multipliers 400 500 600 750 900 1000 1200 1500 1800 2400 3000 3600

824 824 830 832 842 842 852 852 870 8100 824 826 830 832 842 852 852 860 880 8100 824 830 830* 832** 842 852 852 880 880 8100 826 830 830* 842 842 852 852 880 8100 8100 830 830 832 842 842 852 852 880 8100 8100 830 830 842 842 852 852 880 8100 8100 830 832 842 842 852 860 880 8100 8100

830 842 842 852 852 880 8100 8100 830* 842 842 852 852 880 8100 832** 842 842 852 852 8100 8100

Note: This chart is meant as a guide for reducer selections at specific motor horsepowers. Actual service factor may be greater than indicated. For actual service factors and maximum worm reducer ratings, refer to pages 122-126. ♠ Actual ratio combinations supplied by Factory may vary from above depending on application and manufacturing requirements. Refer to page 131 for exact ratio of double reduction worm-worm gear reducers.

* Size 832 must be used for NH Series for this selection. ** Size 842 must be used for NH Series for this selection.

indicates a selection where a smaller reducer (1 case size) can be used with redesigned product due to rating increase. indicates a selection where a smaller reducer (2 case sizes) can be used with redesigned product due to rating increase.

Accessories and

Additional Capabilities 120

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