Speed Chart

Alaska High Speed Elevator Bucket Speed Chart

Recommended Minimum and Optimum Pulley Speeds for the following Alaska Agricultural Elevator Buckets (Centrifugal discharge)

Alaska	Alaska Hy-Pro	Alaska	Alaska Hy-Pro

ELEVATOR BUCKET NOMINAL PROJ. (INCHES)	PULLEY	MINIMUM AND OPTIMUM PULLEY SPEEDS
	CIRCUMFERENCE (FEET)	1.05	1.31	1.57	2.07	2.62	3.14	3.67	4.19	5.24	6.28	7.85	9.42	11	12.57	15.7	18.9	22
	DIAMETER (INCHES)	4"	5"	6"	8"	10"	12"	14"	16"	20"	24"	30"	36"	42"	48"	60"	72"	84"
3"	Minimum	89	80	81	74	69	64
3"	Optimum	158	143	131	115	103	95
4"	Minimum			75	70	53	51	50	46	43	40
4"	Optimum			146	127	109	103	96	89	79	72
5"	Minimum				70	67	63	50	48	45	40	40	35	32	32
5"	Optimum				161	131	111	102	95	90	75	67	61	55	51
6"	Minimum								50	45	40	36	35	31	30
6"	Optimum								93	84	73	67	61	55	51
7"	Minimum									40	36	34	33	31	30	27	26	20
7"	Optimum									80	78	73	65	59	55	50	45	40
8"	Minimum											33	32	30	30	27	25	23
8"	Optimum											60	58	57	56	47	43	40
10"	Minimum														30	25	20	20
10"	Optimum														52	45	42	40

MINIMUM SPEED : Slowest Speed at which Centrifugal Discharge will occur.

OPTIMUM SPEED : Speed at which most desirable results are obtained.

MAXIMUM SPEED : Maximum Speed is governed by many factors including Bonnet Shape, clearances, throat location, desired capacity and commodity elevated, therefore is not published

This table is for general reference only and does not guarantee perfect discharge for all bucket elevators at all speeds shown within speed range. Note: Alaska Elevator Buckets spaced on minimum centers may require faster minimum speeds than shown on this chart.

The optimum speeds shown are based on free flowing whole grains. The optimum recommended speed for feed ingredients and other similar materials is 85% of the optimum speed shown.

*NOTE: Alaska BUCKETS MAY REQUIRE FASTER MINIMUM SPEEDS THAN SHOWN ON THIS CHART AT MINIMUM SPACING.

Alaska-Bucket® Agricultural Elevator Bucket Speed Chart

Alaska-BUKET SS	Alaska-BUKET LP

Recommended Minimum and Optimum Pulley Speeds for Alaska-Buket Agricultural Elevator Buckets (Centrifugal Discharge)

ELEVATOR BUCKET NOMINAL PROJ. (INCHES)	PULLEY	MINIMUM AND OPTIMUM PULLEY SPEEDS
	CIRCUMFERENCE (FEET)	2.62	3.14	4.19	4.71	5.24	5.76	6.28	7.85	9.42	11	12.57	14.14	15.7	18.9	22	25.13
	DIAMETER (INCHES)	10"	12"	16"	18"	20"	22"	24"	30"	36"	42"	48"	54"	60"	72"	84"	96"
3"	Minimum	85	75	55	55	55	55
3"	Optimum	144	121	90	81	76	72
4"	Minimum		75	55	55	55	55	50
4"	Optimum		121	90	81	76	72	72
5"	Minimum				55	55	55	50	42	42	40
5"	Optimum				81	76	72	72	72	72	63
6"	Minimum							50	42	42	40	40	40	40
6"	Optimum							72	72	72	63	58	58	54
7"	Minimum								42	42	40	40	40	40	40	34	34
7"	Optimum								72	72	63	58	58	54	49	45	40
8"	Minimum											40	40	40	40	34	34
8"	Optimum											58	58	54	49	45	40

MINIMUM SPEED : Slowest Speed at which Centrifugal Discharge will occur.

OPTIMUM SPEED : Speed at which most desirable results are obtained.

MAXIMUM SPEED : Maximum Speed is governed by many factors including Bonnet Shape, clearances, throat location and desired capacity.

This table is for general reference only and does not guarantee perfect discharge for all bucket elevators at all speeds shown within speed range. Note: Low-Profile Elevator Buckets spaced on minimum centers may require faster minimum speeds than shown on this chart.

The optimum speeds shown are based on free flowing whole grains. The maximum recommended speed for feed ingredients and other similar materials is 85% of the optimum speed shown.