LSG Harmonic Gearbox

The harmonic drive was invented by the American inventor C.Alt Musser in the 1950s. This harmonic drive theory applied the flexibility and elasticity of metals, subverted the traditional power transmission mode, and won worldwide attention.
The composition of harmonic gear transmission device
Circular spine: rigid internal gear, generally 2 more teeth than the flexwheel, usually fixed on the housing;
Flexspline: A thin cup-shaped metal elastic part with a gear on the outer ring of the open part, which deforms with the rotation of the wave generator and is usually connected to the output shaft;
Wave generator: consists of an elliptical CAM and a flexible bearing, usually connected to the input shaft. The inner ring of the flexible bearing is fixed on the CAM, and the outer ring can be changed into an oval shape by the elastic shape of the ball.

Advantages

▶ High speed ratio: The harmonic reducer does not need a complex mechanism, and a single stage deceleration can achieve a high speed deceleration ratio of 30-160 times.
 
▶ Small side clearance: Different from the general reducer, the unique meshing mode of the harmonic reducer has a very small back clearance value, and even can reach zero side clearance, which is fine degree control is excellent.
 
▶ High precision: affect the rotation accuracy of the pitch error and accumulated pitch error, because the harmonic reducer at the same time the number of teeth mesh is particularly large and symmetric, the error is averaged, so that its position accuracy and rotation accuracy can meet the extremely high requirements.
 
▶ Simple structure, fewer components: even in the case of high deceleration ratio, the harmonic reducer is composed of three basic components, and coaxial installation, simple structure, convenient design.
 
▶ Small, light weight: under the same torque and speed ratio, it is compared with the ordinary reducer with the same transmission ratio, its parts are reduced by 50%, and the volume and weight are reduced by about 1/3 or more.

▶ Large torque: the harmonic reducer has large bearing capacity, and the flexwheel is made of special steel with high strength and fatigue resistance. The number of gearing teeth at the same time is much, about 30% of the total number of teeth. That is, the number of teeth to bear the load, the force of each tooth is very small, in the case of the same material and speed ratio, the load capacity is large Over other drives. 

▶ High transmission efficiency: High transmission efficiency of harmonic reducer. Compared with other drives with the same speed ratio, harmonic transmission is very efficient because of the small number of moving parts and the low speed of the meshing tooth surface, and the maximum efficiency is about 96%.

▶ Quiet operation: When the harmonic reducer is moving, the teeth of the tooth in and out are gradually entering and gradually exiting between the teeth of the rigid gear with the deformation of the flexwheel, the tooth surface contact during the snapping process, the slip speed is small, and there is no sudden change. Therefore, smooth operation, no impact, low noise

Application
Harmonic drive reducers are mainly applied in aerospace filed, industry robot, CNC machine, radar, data communication equipment, robotic arm, precision measuring instrument and etc.


Package and Delivery
We adopt thick foam inside the carton to protect the harmonic drive reducer. DHL, FEDEX, TNT, EMS are ok for sample order. We also could provide sea transport for large quantity orders of harmonic drive reducers.
 

Model	Reduction ratio	Rated speed when input 2000r/min		Allowable peak torque at start stop		Maximum allowable load torque on average		Maximum allowable moment torque
		Nm	kgfm	Nm	kgfm	Nm	kgfm	Nm	kgfm
14	50	7.0	0.7	23	2.3	9.0	0.9	46	4.7
	80	10	1.0	30	3.1	14	1.4	61	6.2
	100	10	1.0	36	3.7	14	1.4	70	7.2
17	50	21	2.1	44	4.5	34	3.4	91	9
	80	29	2.9	56	5.7	35	3.6	113	12
	100	31	3.2	70	7.2	51	5.2	143	15
	120	31	3.2	70	7.2	51	5.2	112	11
20	50	33	3.3	73	7.4	44	4.5	127	13
	80	44	4.5	96	9.8	61	6.2	165	17
	100	52	5.3	107	10.9	64	6.5	191	20
	120	52	5.3	113	11.5	64	6.5	191	20
	160	52	5.3	120	12.2	64	6.5	191	20
25	50	51	5.2	127	13	72	7.3	242	25
	80	82	8.4	178	18	113	12	332	34
	100	87	8.9	204	21	140	14	369	38
	120	87	8.9	217	22	140	14	395	40
	160	87	8.9	229	23	140	14	408	42
32	50	99	10	281	29	140	14	497	51
	80	153	16	395	40	217	22	738	75
	100	178	18	433	44	281	29	841	86
	120	178	18	459	47	281	29	892	91
	160	178	18	484	49	281	29	892	91

Model	Reduction ratio	Allowable maximum input speed r/min		Allowable average input speed r/min		Rotational inertia		Back clerance	Angular transmission accuracy
		Lubricating oil	Grease lubrication	Lubricating oil	Grease lubrication	I *10-4kgm²	J *10-5kgfms²	arcsec	arcmin
14	50	14000	8500	6500	3500	0.033	0.034	36	1.5
	80							23
	100							18
17	50	10000	7300	6500	3500	0.079	0.081	20	1.5
	80							13
	100							10
	120							8
20	50	10000	6500	6500	3500	0.193	0.197	17	1
	80							11
	100							9
	120							8
	160							6
25	50	7500	5600	5600	3500	0.413	0.421	17	1
	80							11
	100							9
	120							8
	160							6
32	50	7000	4800	4600	3500	1.69	1.72	14	1
	80							9
	100							7
	120							6
	160							5