Grove Gear 8050 Catalog

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 644 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 z

RPM 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 RPM 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

1/8 813 813 813 815 815 815 821 821 821 824 824 824 824 830 830 830 830 1/8 813 813 815 815 815 818 821 824 824 824 824 826 830 830 830 830 830*

1/6 1/4 813 815 813 815 815 821 815 821 818 821 821 824 821 824 824 826 824 826 824 830 826 830 830 830 830 830* 830 832 830 832 1/6 1/4 813 815 815 815 815 821 821 824 821 824 821 824 824 826 824 830 824 830 826 830 830 830* 830 832 830 842 832 842 842 842 842 842 830* 842 830* 842

1/3 815 815 821 824 824 824

1/2

3/4

1 1-1/2

2

3

5 7-1/2

10 15 20 25

75

821 824 826 821 824 826 824 826 830* 826 830 832 826 830* 832** 830 832 842

830

832** 842

852 852 852 870 880 880

860 860 880 880

880

880 8100 8100

100

830* 832**

842 842 842 852 852 852 852 860

842 852 852 852 852

880 8100 8100

Double Reduction 150

8100 8100

200 250 300 400 500 600 750 900

842 842 842 852 852 852 852 852 860 870 880

8100

8100 8100 8100 8100

Worm - Worm Gear Reducers

826 830* 842 842

860 8100 8100

830 830

832 842 842 832 842 852

880 8100 880 8100

830* 842 842 852

870 8100 8100

832 832 832 842 842 842 842 852

842 842 852 842 842 852 842 852 852 842 852 860 852 852 860 852 852 880 852 852 880 852 880 8100

880 8100 880 8100 880 8100 8100 8100

1000 1200 1500 1800 3000 3600

8100 8100 8100 8100

Double Reduction 2400

8100

830* 832** 842

Helical - Worm Gear Reducers

Nominal

Output

Input Horsepower @ 1750 RPM

Ratio z

1/3 818 821 824 824 826

1/2

3/4

1 1-1/2

2

3

5 7-1/2

10 15 20 25

75

821 824 830 824 826 830 826 830 832 830 832 842 830 832** 842

832** 832**

842 842 842 852 852 852 852 860

842 842 852 852 852

852 852 870 880 880

880 880 880

880 8100 8100

WASHGUARD ® Reducers

100 150 200 250 300

880 8100

842 842 842 852 852 852 852 860 880 880 880

8100

8100 8100

8100

826 830* 842 842

870 8100 8100

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

830

832 842 842

880 8100 880 8100

830* 842 842 852

832 832 842 842 842 842 852 852 852

842 842 852 842 852 852

870 8100 880 8100 880 8100 8100 8100 8100 8100

830 830* 832** 842 852 852

842 852 852 842 852 852 852 852 880 852 860 880 852 880 8100 852 880 8100 852 8100 8100

8100 8100 8100 8100

8100

832** 842 842

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 132-136. z Actual ratio combinations supplied by Factory may vary from above depending on application and manufacturing requirements. Refer to page 141 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 130

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