Empire Magnetics Inc. prepares gearboxes to operate in the same environments as the motors and resolvers. We start with high quality planetary gearboxes. These units are selected to provide maximum torque capacity with the smallest practical volume. We then upgrade the materials construction and lubrication to meet the requirements of the environment.p

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InLine Specifications

MODEL	DRAWING NUMBER	GEAR RATIO	BACKLASH (arc min)	MIN EFF (%)	GEARBOX LENGTH (in)	WT (lbs)	TORQUE		INERTIA
							CONT. (in lbs)	PEAK (in lbs)	REFLECTED (oz in sec²)	GEARHEAD (oz in sec²)
23P:3	G2500003	3	6	90	2.66	1.8	380	594	0.001194	0.000487
23P:4	G2500003	4	6	90	2.66	1.8	360	562	0.000950	0.000311
23P:5.5	G2500003	5.5	6	90	2.66	1.8	317	496	0.000897	0.000175
23P:7	G2500003	7	6	90	2.66	1.8	263	411	0.000888	0.000110
23P:10	G2500003	10	6	90	2.66	1.8	119	179	0.000885	0.000055
23P:16	G2500004	16	10	85	3.48	2.8	376	587	0.000950	0.000329
23P:22	G2500004	22	10	85	3.48	2.8	380	594	0.000897	0.000184
23P:28	G2500004	28	10	85	3.48	2.8	384	600	0.000888	0.000116
23P:40	G2500004	40	10	85	3.48	2.8	388	607	0.000885	0.000057
23P:49	G2500004	49	10	85	3.48	2.8	286	447	0.000888	0.000110
23P:55	G2500004	55	10	85	3.48	2.8	347	542	0.000885	0.000055
23P:70	G2500004	70	10	85	3.48	2.8	288	450	0.000885	0.000055
23P:100	G2500004	100	10	85	3.48	2.8	110	164	0.000885	0.000054

Right Angle Specifications

MODEL NUMBER	DRAWING NUMBER	GEAR RATIO	BACKLASH (arc min)	MIN. EFF. (%)	GEARHEAD LENGTH (in)	WT. (lbs)	MAX RATED CONTINUOUS TORQUE (in-lb)	MOMENTARY TORQUE(in-lb)	REFLECTED PINION INERTIA (oz in sec²)	GEARBOX INERTIA (oz in sec²)
23RA:3	G2500053	3	11	085	6.49	4	380	594	0.001194	0.001530
23RA:4	G2500053	4	11	85	6.49	4	360	562	0.000950	0.000904
23RA:5.5	G2500053	5.5	11	85	6.49	4	317	496	0.000897	0.000488
23RA:7	G2500053	7	11	85	6.49	4	263	411	0.000888	0.000303
23RA:10	G2500053	10	11	85	6.49	4	119	179	0.000885	0.000150
23RA:16	G2500054	16	15	80	7.32	5	376	587	0.000950	0.000346
23RA:22	G2500054	22	15	80	7.32	5	380	594	0.000897	0.000193
23RA:28	G2500054	28	15	80	7.32	5	384	600	0.000888	0.000121
23RA:40	G2500054	40	15	80	7.32	5	388	607	0.000885	0.000060
23RA:49	G2500054	49	15	80	7.32	5	286	447	0.000888	0.000112
23RA:55	G2500054	55	15	80	7.32	5	347	542	0.000885	0.000057
23RA:70	G2500054	70	15	80	7.32	5	288	450	0.000885	0.000056
23RA:100	G2500054	100	15	80	7.32	5	110	164	0.000885	0.000054

 

Gearboxes for stepper motors and brushless motors are designed for the accurate positional functions desired of such systems.
All of the planetary gearheads provide "in line" power transfer so there is no offset from the motor shaft to the output shaft of the gearhead.
Vacuum rated gearboxes have all the materials selected or replaced with items that are compatible with VC, VS, or VX grades. The VS and VX grades are cleaned in the same exacting fashion as other components of this vacuum level.
For VX grade we offer dry film lubrications as an option, while the vapor pressure is lower on dry film lubrications, the wear life is also lower. The application specifics must be considered to make the decision.
Planetary gearboxes are available for stepper motors from size 17 to size 65, adapted versions of these same gearboxes can be mounted to brushless servo motors as well.

Other gearbox types:

For specific applications custom units using spur gears can be provided. Typically these are useful on very small motors such as the size 11.
In other applications where weight or space is highly constrained, we can offer harmonic style gearboxes. These gearboxes offer high ratios (but not low ones) in a compact lightweight design. They offer low backlash, but they are not as stiff as the other gearboxes. They do offer smooth motions for tool path applications.