Feed Systems

The seamless compatibility of our entire line of material feed products allows producers to run at peak performance and maximize the effectiveness of their operations by improving material feed points.

Our feeding equipment excels at efficiently feeding portable or stationary systems, and easily fits into new or existing operations.

Model	Hopper Capacity (yd³)	Belt Feeder (in x ft)	Belt Conveyor (in x ft)	Capacity (tph)
Series 900
930-14-12	12	30 x 14	-	450
936-14-12	12	36 x 14	-	600
930-18-20	20	30 x 18	-	450
936-18-20	20	36 x 18	-	600
942-18-20	20	42 x 18	-	750
936-18-20P	20	36 x 18	-	750
942-18-20P	20	42 x 18	-	900
Series 12
12-3060	10	30 x 8	30 x 60	450
12-3070	10	30 x 8	30 x 70	450
12-3660	10	36 x 8	36 x 60	600
12-3670	10	36 x 8	36 x 70	600
Series 1400
1430-60-20	20	36 x 16	30 x 60	500
1430-70-20	20	36 x 16	30 x 70	500
1430-80-20	20	36 x 16	30 x 80	500
1436-60-20	20	42 x 16	36 x 60	750
1436-70-20	20	42 x 16	36 x 70	750
1436-80-20	20	42 x 16	36 x 80	750
Series 1900
1936-2*	12	30 x 8	36	-
1936-2S*	20	30 x 12	36	-
1936-3**	12	30 x 8	36	-

Model	Hopper Capacity (m³)	Belt Feeder (mm x mm)	Belt Conveyor (mm x mm)	Capacity (mtph)
Series 900
930-14-12	9.2	762 x 4,300	-	409
936-14-12	9.2	914 x 4,300	-	545
930-18-20	15.3	762 x 5,500	-	545
936-18-20	15.2	914 x 5487	-	545
942-18-20	15.2	1,067 x 5,500	-	682
936-18-20P	15.3	915 x 5,500	-	682
942-18-20P	15.3	1,067 x 5,500	-	818
Series 12
12-3060	7.6	762 x 2,400	762 x 18,300	409
12-3070	7.6	762 x 2,400	762 x 21,300	409
12-3660	7.6	914 x 2,400	914 x 18,300	545
12-3670	7.6	914 x 2,400	914 x 21,300	545
Series 1400
1430-60-20	15.3	914 x 4,900	762 x 18,300	455
1430-70-20	15.3	914 x 4,900	762 x 21,300	455
1430-80-20	15.3	914 x 4,900	762 x 24,400	455
1436-60-20	15.3	1,067 x 4,900	914 x 18,300	682
1436-70-20	15.3	1,067 x 4,900	914 x 21,300	682
1436-80-20	15.3	1,067 x 4,900	914 x 24,400	682
Series 1900
1936-2*	9.2	762 x 2,440	914	-
1936-2S*	15.3	762 x 3,660	914	-
1936-3**	9.2	762 x 2,440	914	-

Facts & Figures

Rocky U

Dealer Locator

Select A Calculator

Select a calculator from the drop down above.

Cost & ROI

Complete the tables with numbers specific to your operation to run a rough return on investment analysis.

ROI Estimating Sheet

Purchase Price
Average Cost of Operation
Operating Hours
Production Rate
Product Selling Price

ROI Results

Production tons/year
Value of Production /year
Operating Cost /year
Net Income/Year
Net ROI/Year
Net ROI/Ton

Horsepower

Horsepower Calculator

Conveyor Width in
Enter Conveyor Center to Center Length in ft (0 - 400 ft) ft
Enter Change in Elevation (0-100 ft) ft
Enter Required Capacity (STPH) (0-1000) STPH

Results

Required Running Horsepower (Headshaft) HP

Drive efficiency needs to be taken into consideration to determine the motor HP required. This can be an additional 10-15% above the headshaft HP. The ability to start a loaded conveyor will also require additional HP consideration.

Horsepower calculations based on 350 fpm conveyor speed.

Belt Width

Belt Width Calculator

Material Top Size
Required Capacity (0-1100 STPH) STPH
Material Gradation

Results

Recommended Belt Width inches

Fines are defined as material with a size that is less than 10% of the maximum material size of the sample.

Belt width recommendations are based on a belt speed of 350 fpm and 80% of maximum volumetric belt carrying capacity.

Capacity is based on a material density of 100 pounds per cubic ft, 37.5 degree angle of repose material and 3-roll, 35 degree idlers.

Discharge Height

Discharge Height Calculator

Enter Conveyor Length (L) ft
Angle of Incline (θ)* deg

Results

Discharge Height ft

* Conveyor Inclines of 18 degrees or less are typical for aggregate and mining applications.

Standard Radial Stacking Conveyor Stockpile

Conveyor Length ft
Angle of Inclination deg
Enter Degrees of Radial Travel (270° or less) deg

Pile Dimensions and Capacities

Pile Height (H) ft
D ft
Conical Pile Volume yd^3
Conical Pile Volume (100 pcf material) ton
Radial Pile Volume yd^3
Radial Pile Volume (100 pcf material) ton

Capacity is based on 100 pounds per cubic foot, 37.5 degree angle of repose material.

Super Stacker Conveyor Stockpile

Conveyor Length ft
Type of Pile
Enter Degrees of Radial Travel deg

Pile Dimensions and Capacities

Pile Height (H) ft
D ft
Conical Pile Volume yd^3
Conical Pile Volume (100 pcf material) ton
Radial Pile Volume yd^3
Radial Pile Volume (100 pcf material) ton

Capacity is based on 100 pounds per cubic foot, 37.5 degree angle of repose material.

Belt Capacity

Conveyor Belt Carrying Capacity at Various Speeds.

Conveyor Belt Capacity Calculator

Belt Speed FPM
Belt Width inches

Results

Belt Carrying Capacity STPH

Belt carrying capacity is based on a theoretical 100% full load cross section. To use this information for conveyor sizing, use 75%-80% of the carrying capacity shown above.