SHF Series Unit type : Harmonic Drive® : Product Information : Harmonic Drive Systems

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SHF Unit 2UH:
SHF unit 2UH Harmonic Drive® have been developed focusing on ease of use and total cost reduction. With a hollow-shaft construction adopted as standard, these Harmonic Drive® are credited with a high level of space economy, because the hollow-shaft construction provides room for other drive shafts and can also be used for wiring. Harmonic Drive® of this type can also provide direct support for external loads due to their built-in high rigidity cross roller bearings.

• Simple and compact configuration
• High torque capacity
• High rigidity
• Non backlash
• High positional accuracy and high rotational accuracy
• High efficiency
• Smoothness of operation
• Coaxial input and output
• Available in component and unit types:
  Outer diameter: ø74 to ø246mm for all 9 sizes
  Reduction ratio: 30 to 160
  Rated torque: 4.0 to 745 N·m.

SHF Unit 2UJ:
Harmonic Drive® have been developed focusing on the importance of ease of use and total cost reduction. In order to facilitate connectivity with motors, SHF Unit 2UJ Harmonic Drive® are offered with input axes included as standard. SHF Unit 2UJ series products are general purpose Harmonic Drive® that are finding their way into a wider variety of applications. Main features are:

• Simple and compact configuration
• High torque capacity
• High rigidity
• Non backlash
• High positional accuracy and high rotational accuracy
• High efficiency
• Smoothness of operation
• Coaxial input and output
• Available in component and unit types:
  Outer diameter: ø74 to ø246mm for all 9 sizes
  Reduction ratio: 30 to 160
  Rated torque: 4.0 to 30 N·m.

	Type: SHF series
	Size: 14, 17, 20, 25, 32, 40, 45, 50, 58
	Reduction ratio: 30, 50, 80, 100, 120, 160
	Models and symbols:
	• 2A-GR = Component type ("2A-R" for sizes 14 and 17)
	• 2UH = Unit / Hollow shaft type
	• 2UJ = Unit / Shaft input type
	• 2SO = Simple unit (Flat type)
	• 2SH = Simple unit (Hollow shaft type)
	Special specification (Suffix "SP" is only special specification)

Size	Reduction ratio	Rated torque at 2000r/min	Allowable peak torque at start and stop	Allowable average torque	Allowable maximum momentary torque	Maximum input speed (Grease lubrication)
Size	Reduction ratio	N·m	N·m	N·m	N·m	r/min
14	30	4.0	9	6.8	17	8500
	50	5.4	18	6.9	35
	80	7.8	23	11	47
	100	7.8	28	11	54
17	30	8.8	16	12	30	7300
	50	16	34	26	70
	80	22	43	27	87
	100	24	54	39	110
	120	24	54	39	86
20	30	15	27	20	50	6500
	50	25	56	34	98
	80	34	74	47	127
	100	40	82	49	147
	120	40	87	49	147
	160	40	92	49	147
25	30	27	50	38	95	5600
	50	39	98	55	186
	80	63	137	87	255
	100	67	157	108	284
	120	67	167	108	304
	160	67	176	108	314
Size	Reduction ratio	Rated torque at 2000r/min	Allowable peak torque at start and stop	Allowable average torque	Allowable maximum momentary torque	Maximum input speed (Grease lubrication)
Size	Reduction ratio	N·m	N·m	N·m	N·m	r/min
32	30	54	100	75	200	4800
	50	76	216	108	382
	80	118	304	167	568
	100	137	333	216	647
	120	137	353	216	686
	160	137	372	216	686
40	50	137	402	196	686	4000
	80	206	519	284	980
	100	265	568	372	1080
	120	294	617	451	1180
	160	294	647	451	1180
45	50	176	500	265	950	3800
	80	313	706	390	1270
	100	353	755	500	1570
	120	402	823	620	1760
	160	402	882	630	1910
50	50	245	715	350	1430	3500
	80	372	941	519	1860
	100	470	980	666	2060
	120	529	1080	813	2060
	160	529	1180	843	2450
58	50	353	1020	520	1960	3000
	80	549	1480	770	2450
	100	696	1590	1060	3180
	120	745	1720	1190	3330
	160	745	1840	1210	3430

• Hollow shaft type Unit (Full unit <2UH> / simple unit <2SH>)

Indicates the construction of the simple unit type.

(Unit:mm)

Symbol /Size		14	17	20	25	32	40	45	50	58
øA		54	64	75	90	115	140	160	175	201
B		52.5	56.5	51.5	55.5	65.5	79	85	93	106
C		12	12	5	6	7	8	8	9	10
øD h7		74	84	95	115	147	175	195	220	246
øE		14	19	21	29	36	46	52	60	70
Mass(kg)	2UH	0.71	1.00	1.38	2.1	4.5	7.7	10.0	14.5	20.0
Mass(kg)	2SH	0.45	0.63	0.89	1.44	3.1	5.4	6.9	10.2	14.1

• Shaft input type unit (Full unit <2UJ> / Simple unit <2SO>)

Indicates the construction of the simple unit type.

(Unit:mm)

Symbol /Size		14	17	20	25	32	40	45	50	58
øA		54	64	75	90	115	140	160	175	201
B		50.5	56	63.5	72.5	84.5	100	108	121	133
C		14	16	20	25	25	30	30	35	35
øD h7		74	84	95	115	147	175	195	220	246
øE h6		6	8	10	14	14	16	19	22	22
Mass(kg)	2UJ	0.66	0.94	1.38	2.1	4.4	7.3	9.8	13.9	19.4
Mass(kg)	2SO	0.41	0.57	0.81	1.31	2.94	5.1	6.5	9.6	13.5

Please confirm dimensions and specification with the drawing issued by Harmonic Drive Systems.


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