1750 R. P. M. Input Speed ( Service Factor = 1 )
Ratio	25	40	50	75	100	125	150	200	250	300	350
SERIES 3251
Input HP	3.90	3.07	2.30	1.62	1.44	1.19	0.90	0.60	0.56	0.54	0.52
Efficiency (%)	0.90	0.87	0.85	0.82	0.80	0.76	0.73	0.69	0.65	0.60	0.59
Output Torque (lb-in)	3175	3838	3514	3583	4142	4077	3527	2995	3275	3530	3896
Maximum allowable torque with standard construction : 3900 lb-in
SERIES 4251
Input HP	6.00	5.12	5.10	3.60	3.20	2.64	2.00	1.20	1.12	1.08	1.04
Efficiency (%)	0.90	0.89	0.88	0.83	0.80	0.76	0.73	0.69	0.63	0.62	0.59
Output Torque(lb-in)	4885	6594	8049	8076	9204	9060	7885	5990	6391	7278	7734
Maximum allowable torque with standard construction : 6000 lb-in
SERIES 5301
Input HP	11.04	8.08	6.48	5.98	4.00	3.33	2.94	2.45	1.95	1.76	1.68
Efficiency (%)	0.90	0.89	0.88	0.85	0.80	0.76	0.75	0.69	0.65	0.62	0.60
Output Torque(lb-in)	8988	10406	10227	13697	11504	11421	11966	12219	11479	11860	12706
Maximum allowable torque with standard construction : 8600 lb-in
SERIES 6301
Input HP	15.20	13.60	12.00	8.64	7.76	5.62	4.50	3.38	2.95	2.38	2.15
Efficiency (%)	0.91	0.89	0.87	0.83	0.79	0.76	0.74	0.67	0.63	0.61	0.56
Output Torque(lb-in)	12465	17437	18740	19361	22134	19272	18050	16409	16840	15757	15262
Maximum allowable torque with standard construction : 10800 lb-in
SERIES 7351
Input HP	20.00	18.51	17.00	13.30	9.60	8.56	6.96	5.70	4.65	3.93	3.21
Efficiency (%)	0.91	0.89	0.88	0.88	0.79	0.75	0.76	0.69	0.70	0.63	0.58
Output Torque(lb-in)	16401	23763	26972	31653	27382	28994	28662	28432	29426	26895	23619
Maximum allowable torque with standard construction : 17300 lb-in
SERIES 8351
Input HP	26.80	22.56	16.64	15.60	13.36	11.92	9.28	6.96	6.00	4.96	4.48
Efficiency (%)	0.89	0.90	0.88	0.83	0.81	0.77	0.75	0.71	0.62	0.62	0.63
Output Torque(lb-in)	21499	29279	26401	35041	39060	41437	37719	35734	33693	33424	35780
Maximum allowable torque with standard construction : 23400 lb-in
SERIES 10051
Input HP	68.52	57.68	42.54	39.88	33.49	29.14	26.00	20.14	18.45	15.24	13.69
Efficiency (%)	0.90	0.89	0.87	0.85	0.83	0.81	0.8	0.73	0.71	0.67	0.65
Output Torque(lb-in)	55779	73905	66807	91566	100120	106242	112365	105882	117947	110312	112185
Maximum allowable torque with standard construction : 37900 lb-in