SHD Harmonic Drive Gearbox 5 Powerful Advantages

SHD Series Harmonic Drive Gearbox – Ultra-Flat Zero-Backlash Precision Gearbox

Product Overview

The SHD series harmonic drive gearbox is an ultra-flat, hollow-shaft precision reducer specifically engineered for advanced automation systems that require extreme compactness, high torque density, and true zero backlash. Compared with the standard SHG/SHF harmonic drive series, the SHD model achieves up to a 50% reduction in axial height, making it one of the thinnest strain-wave gear reducers available for robotics, semiconductor machinery, and compact motion platforms.

As a combination-type unit, the SHD series harmonic drive gearbox comes pre-assembled with a high-rigidity cross-roller output bearing, allowing it to directly support large external loads without the need for additional external bearings. This makes it ideal for applications that must minimize axial dimensions while maximizing output stiffness and precision.

Whether you’re designing next-generation collaborative robots, lightweight manipulators, gimbal systems, medical machinery, or aerospace positioning platforms, the SHD series harmonic drive gearbox provides the mechanical accuracy, torque performance, and space-saving features modern machines require.

The SHD series harmonic drive gearbox is compatible with all major global servo motor brands. To help engineers ensure a perfect match, here are some commonly used references:

Key Features

Ultra-Thin Design with Hollow Shaft Structure
The SHD Series is engineered to deliver extreme axial compactness, reducing the overall height by approximately 50% compared to conventional SHG/SHF type harmonic drives. Perfect for robotic wrists, compact joints, and space-constrained automation modules.
Hollow-shaft structure enables cable routing, pneumatic lines, or laser/fiber optics to pass through the center.
Compact and Simplified Structure
The simplified internal configuration reduces overall weight and improves system integration efficiency while maintaining high output performance and long service life.
High Torque Capacity
Despite its slim profile, the SHD Harmonic Drive maintains impressive torque density, outperforming many conventional planetary gearboxes and traditional reducers in similar size categories.
High Rigidity with Built-In Cross-Roller Output Bearing
The integrated cross-roller bearing allows the SHD unit to handle heavy radial and axial loads simultaneously.
This makes it ideal for:
Industrial robot wrists;
End-of-arm tooling mechanisms;
Semiconductor inspection machines;
Gimbal payload platforms.
True Zero Backlash
The SHD Series maintains the harmonic drive’s core advantage—zero backlash transmission.
This ensures outstanding repeatability, perfect for:
Precision positioning;
Robotic joint control;
Laser and optical tracking;
Medical diagnostic equipment.
Excellent Positioning and Rotational Accuracy
The strain-wave mechanism provides exceptionally low lost motion, making the SHD Series suitable for ultra-high accuracy applications such as semiconductor lithography equipment and 6-axis articulating robot joints.
Coaxial Input and Output
The coaxial layout simplifies installation and enhances mechanical symmetry, improving the dynamic response of servo-driven systems.

Size	Ratio	Rated Torque @2000rpm (Nm)	Rated Torque @2000rpm (kgf·m)	Allowable Peak Torque at Start/Stop (Nm)	Allowable Peak Torque at Start/Stop (kgf·m)	Allowable Average Load Torque (Nm)	Allowable Average Load Torque (kgf·m)	Maximum Instantaneous Allowable Torque (Nm)	Maximum Instantaneous Allowable Torque (kgf·m)	Maximum Input Speed (rpm)	Allowable Average Input Speed (rpm)	Moment of Inertia (×10⁻⁴ kg·m²)	Moment of Inertia (×10⁻⁴ kgf·m·s²)
14	50	3.7	0.38	12	1.2	4.8	0.49	24	2.4	8500	3500	0.021	0.021
14	100	5.4	0.55	19	1.9	7.7	0.79	35	3.6	8500	3500	0.021	0.021
17	50	11	1.1	23	2.3	18	1.9	48	4.9	7300	3500	0.054	0.055
17	100	16	1.6	37	3.8	27	2.8	71	7.2	7300	3500	0.054	0.055
20	50	17	1.7	39	4.0	24	2.4	69	7.0	6500	3500	0.090	0.092
20	100	28	2.9	57	5.8	34	3.5	95	9.7	6500	3500	0.090	0.092
20	160	28	2.9	64	6.5	34	3.5	95	9.7	6500	3500	0.090	0.092
25	50	27	2.8	69	7.0	38	3.9	127	13	5600	3500	0.282	0.288
25	100	47	4.8	110	11	75	7.6	184	19	5600	3500	0.282	0.288
25	160	47	4.8	123	13	75	7.6	204	21	5600	3500	0.282	0.288
32	50	53	5.4	151	15	75	7.6	268	27	4800	3500	1.09	1.11
32	100	96	10	233	24	151	15	420	43	4800	3500	1.09	1.11
32	160	96	10	261	27	151	15	445	45	4800	3500	1.09	1.11
40	50	96	10	281	29	137	14	480	49	4000	3000	2.85	2.91
40	100	185	19	398	41	260	27	700	71	4000	3000	2.85	2.91
40	160	206	21	453	46	316	32	765	78	4000	3000	2.85	2.91
50	50	172	18	500	51	247	25	1000	102	3500	2500	8.61	8.78
50	100	329	34	686	70	466	48	1440	147	3500	2500	8.61	8.78
50	160	370	38	823	84	590	60	1715	175	3500	2500	8.61	8.78

Size	Ratio	Rated Torque @2000rpm (Nm)	Rated Torque @2000rpm (kgf·m)	Allowable Peak Torque at Start/Stop (Nm)	Allowable Peak Torque at Start/Stop (kgf·m)	Allowable Average Load Torque (Nm)	Allowable Average Load Torque (kgf·m)	Maximum Instantaneous Allowable Torque (Nm)	Maximum Instantaneous Allowable Torque (kgf·m)	Maximum Input Speed (rpm)	Allowable Average Input Speed (rpm)	Moment of Inertia (×10⁻⁴ kg·m²)	Moment of Inertia (×10⁻⁴ kgf·m·s²)
14	50	3.7	0.38	12	1.2	4.8	0.49	24	2.4	8500	3500	0.021	0.021
14	100	5.4	0.55	19	1.9	7.7	0.79	35	3.6	8500	3500	0.021	0.021
17	50	11	1.1	23	2.3	18	1.9	48	4.9	7300	3500	0.054	0.055
17	100	16	1.6	37	3.8	27	2.8	71	7.2	7300	3500	0.054	0.055
20	50	17	1.7	39	4.0	24	2.4	69	7.0	6500	3500	0.090	0.092
20	100	28	2.9	57	5.8	34	3.5	95	9.7	6500	3500	0.090	0.092
20	160	28	2.9	64	6.5	34	3.5	95	9.7	6500	3500	0.090	0.092
25	50	27	2.8	69	7.0	38	3.9	127	13	5600	3500	0.282	0.288
25	100	47	4.8	110	11	75	7.6	184	19	5600	3500	0.282	0.288
25	160	47	4.8	123	13	75	7.6	204	21	5600	3500	0.282	0.288
32	50	53	5.4	151	15	75	7.6	268	27	4800	3500	1.09	1.11
32	100	96	10	233	24	151	15	420	43	4800	3500	1.09	1.11
32	160	96	10	261	27	151	15	445	45	4800	3500	1.09	1.11
40	50	96	10	281	29	137	14	480	49	4000	3000	2.85	2.91
40	100	185	19	398	41	260	27	700	71	4000	3000	2.85	2.91
40	160	206	21	453	46	316	32	765	78	4000	3000	2.85	2.91

Parameter	Unit	14	17	20	25	32	40	50
T1 (Preload Torque)	Nm	2.0	3.9	7.0	14	29	54	108
T1 (Preload Torque)	kgf·m	0.2	0.4	0.7	1.4	3.0	5.5	11
T2 (Reference Torque)	Nm	6.9	12	25	48	108	196	382
T2 (Reference Torque)	kgf·m	0.7	1.2	2.5	4.9	11	20	39
K1 (Reduction Ratio 50)	×10⁶ Nm/rad	0.29	0.67	1.1	2.0	4.7	8.8	17
K1 (Reduction Ratio 50)	kgf·m/arc min	0.085	0.2	0.32	0.6	1.4	2.6	5.0
K2 (Reduction Ratio 50)	×10⁶ Nm/rad	0.37	0.88	1.3	2.7	6.1	11	21
K2 (Reduction Ratio 50)	kgf·m/arc min	0.11	0.26	0.4	0.8	1.8	3.4	6.3
K3 (Reduction Ratio 50)	×10⁶ Nm/rad	0.47	1.2	2.0	3.7	8.4	15	30
K3 (Reduction Ratio 50)	kgf·m/arc min	0.14	0.34	0.6	1.1	2.5	4.5	9.0
θ (Reduction Ratio 50)	×10⁻⁴ rad	6.9	5.8	6.4	7.0	6.2	6.1	6.4
θ (Reduction Ratio 50)	arc min	2.4	2.0	2.2	2.4	2.1	2.1	2.2
θ2 (Reduction Ratio 50)	×10⁻⁴ rad	19	14	19	18	18	18	18
θ2 (Reduction Ratio 50)	arc min	6.4	4.6	6.6	6.1	6.1	5.9	6.2
K1 (Reduction Ratio 100+)	×10⁶ Nm/rad	0.4	0.84	1.3	2.7	6.1	11	21
K1 (Reduction Ratio 100+)	kgf·m/arc min	0.12	0.25	0.4	0.8	1.8	3.2	6.3
K2 (Reduction Ratio 100+)	×10⁶ Nm/rad	0.44	0.94	1.7	3.7	7.8	14	29
K2 (Reduction Ratio 100+)	kgf·m/arc min	0.13	0.28	0.5	1.1	2.3	4.2	8.5
K3 (Reduction Ratio 100+)	×10⁶ Nm/rad	0.61	1.3	2.5	4.7	11	20	37
K3 (Reduction Ratio 100+)	kgf·m/arc min	0.18	0.39	0.75	1.4	3.3	5.8	11
θ1 (Reduction Ratio 100+)	×10⁻⁴ rad	5.0	4.6	5.4	5.2	4.8	4.9	5.1
θ1 (Reduction Ratio 100+)	arc min	1.7	1.6	1.8	1.8	1.7	1.7	1.7
θ2 (Reduction Ratio 100+)	×10⁻⁴ rad	16	13	15	13	14	14	13
θ2 (Reduction Ratio 100+)	arc min	5.4	4.3	5.0	4.5	4.8	4.8	4.6

Model	Reduction Ratio	14	17	20	25	32	40	50
CSD-2UH	50	4.4	6.7	8.9	16	32	55	102
CSD-2UH	100	2.8	3.8	5.1	9.1	20	32	60
CSD-2UH	160	–	–	3.9	7.2	15	26	47
CSD-2UF	50	2.9	4.3	5.2	9.5	19	33	61
CSD-2UF	100	3.5	4.6	6.0	11	23	38	71
CSD-2UF	160	–	–	7.4	13	30	48	89

Model	Reduction Ratio	14	17	20	25	32	40	50
CSD-2UF	50	3.3	4.7	5.6	10	20	34
CSD-2UF	100	3.9	5.0	6.4	11	24	39
CSD-2UF	160	–	–	7.8	14	31	49
CSD-2UH	50	2.9	4.3	5.2	9.5	19	33	61
CSD-2UH	100	3.5	4.6	6.0	11	23	38	71
CSD-2UH	160	–	–	7.4	13	30	48	89

Reduction Ratio	14	17	20	25	32	40	50
50	88	150	220	450	980	1800	3700
100	84	160	260	500	1000	2100	4100
160	–	–	220	450	980	1800	3600

Reduction Ratio	14	17	20	25	32	40	50
100	190	330	560	1000	2200	4300	8000

SHD Series Catalogue (PDF)

2D / 3D CAD Models (STEP / IGES)

Torque & Speed Curves

Installation Instructions

Motor Mounting Guide

Applications

Robotics: 6-axis articulated robots; Collaborative robot wrists; SCARA robot end joints; Exoskeleton and wearable robotics.
Semiconductor & LCD Manufacturing: Optical inspection modules; Positioning and alignment units; Wafer handling mechanisms.
Medical & Laboratory Equipment: Surgical robotic arms; Diagnostic imaging systems; Micro-manipulation and precision dosing machines.
Aerospace & UAV Systems: Stabilized gimbals; Satellite mechanisms; Lightweight motion platforms.
Precision Automation Machinery: CNC rotary tables; Laser cutting heads; Metrology instruments.

Contact Us

Request a Quote or Technical Consultation for the SHD Harmonic Drive Gearbox

Tell us your motor model, torque requirements, application details, and installation constraints. Our engineering team will reply with professional recommendations and compatible harmonic drive sizing within 24 hours.

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Product Overview

Key Features

Technical Information

Applications

Contact Us

Request a Quote or Technical Consultation for the SHD Harmonic Drive Gearbox

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