Medium Service Medium Service - < 10,000 life cycles Click on the pdf icon to download cut sheets.
Unit	Base Ratio	Base Spur/ Wom Ratio	Auxiliary Spur/ Worm Ratio	Final Ratio	Effic	Mech Adv	Max Output Moderate Service*		Required Torque Input		Maximum Input Torque		Turns to Open
							Ft-lbs	Nm	Ft-lbs	Nm	IFt-lbs	Nm
LW1	9.3	3		28.0	0.61	17	1,667	2,260	98	132	244	331	7
LW2	18.3	3		54.9	0.61	33	3,333	4,519	100	135	249	337	14
LW3	25.3	3		75.9	0.61	46	6,667	9,039	144	195	360	488	19
BW1	20.25	7		141.8	0.61	86	13,333	18,077	154	209	386	523	35
BW2	18.75	3	5.6	315.0	0.59	186	26,667	36,155	143	195	359	486	79
BW3	22.75	3	7.6	518.7	0.59	306	40,000	54,22	131	177	381	517	130
BW4	28.25	3	9	762.8	0.59	450	66,667	90,387	148	201	370	502	191
MW1	21.75	20.25	3	1321.3	0.46	608	100,000	135,580	165	223	411	558	330
MW2	27.25	20.25	5	2759.1	0.46	1269	150,000	203,370	118	160	295	401	690
MW3	30.75	20.25	5	3113.4	0.46	1432	200,000	271,160	140	189	349	473	778
MW4	37.75	20.25	5	3822.2	0.46	1758	250,000	338,950	142	193	355	482	956
MW5	42.25	20.25	5	4277.8	0.46	1968	300,000	406,740	152	207	380	517	1069
									* 1,000 to 10,000 Cycles

Efficiencies are based on dynamic performance after a reasonable break-in period.

Self-locking characteristics are similar to those of other self-locking worm gearboxes. Specific environmental conditions such as high vibration may adversely affect self-locking characteristics. If locking is required in this or other conditions, a separate brake should be utilized.