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8500 SERIES SINGLE & DOUBLE

REDUCTION BASE TYPE GEAR DRIVES

NOTE: Bracketed numbers in table below refer to Notes section below table.

Average Shipping Weight: 475 Lbs.

MODEL	RATIO (2)	REDUCTION (3)	RATINGS (1)					GEARBOX (5) INERTIA (LB-FT ²)	DIA A. (INCHES)	KEYWAY B
MODEL	RATIO (2)	REDUCTION (3)	OUTPUT(RPM)	INPUT HORSEPOWER	OUTPUT TORQUE (IN-LB)	INPUT SHAFT (4) OVERHUNG LOAD CAPACITY (LBS)	OUTPUT SHAFT (4) OVERHUNG LOAD CAPACITY (LBS)	GEARBOX (5) INERTIA (LB-FT ²)	DIA A. (INCHES)	KEYWAY B
85055S (6)	5.529	SINGLE	316	197.0 (7)	39,200	1120	6430	0.42	1 7/8	1/2
85058 (6)	5.789	DOUBLE	302	201.0 (7)	42,000	1120	6430	1.43	2	1/2
8513	13.034	DOUBLE	134	89.5 (7)	42,000	1120	6430	0.24	2	1/2
8515	15.238	DOUBLE	115	76.5 (7)	42,000	1120	6430	0.20	2	1/2
8518	17.893	DOUBLE	98	64.6	41,600	1120	6430	0.17	2	1/2
8520	19.722	DOUBLE	89	56.6	40,200	1120	6430	0.16	1 1/2	3/8
8524	24.457	DOUBLE	72	47.6	41,900	930	6430	0.14	2	1/2
8526	26.191	DOUBLE	67	44.4	41,900	930	6430	0.13	1 1/2	3/8
8527	26.956	DOUBLE	65	43.2	41,900	690	6430	0.12	1 1/2	3/8
8530	29.909	DOUBLE	58	39.0	42,000	690	6430	0.12	1 1/2	3/8
85334	33.453	DOUBLE	52	34.9	42,000	690	6430	0.11	1 1/2	3/8
8535	35.319	DOUBLE	50	31.5	40,100	690	6430	0.11	1 1/4	1/4
8540	40.332	DOUBLE	43	28.7	42,000	690	6430	0.11	1 1/4	1/4

NOTES

Horsepower, torque, output speed and overhung load capacities based on 1750 rpm input speed and 1.00 Service Factor.
Non-standard ratios available. Consult Dorris Company if desired ratio is not shown.
Single reduction high speed shaft dimensions shown in parentheses ( ).
Overhung load is measured at the midpoint of the key for the input and output shafts respectively.
Measured at the input shaft.
If a backstop is required consult Dorris Company for backstop torque capacity as it is less than the output torque rating shown.
Consult Dorris Company for thermal capacity in your application.