ZLSH-H series parameters :

No	Item	Data	No	Item	Data
1	Type	17/20/25/32	11	Angular transmission accuracy	1~1.5
2	Body Length	51.5~65.5mm	12	hysteresis loss	1~2arc min
3	Ratio	50/80/100/120	13	starting torque	25~74Nm
4	Input 2000r/min Rate Torque	16~137Nm	14	Accelerating starting torque	16~86Nm
5	Start &stop permissible peak torque	39~345Nm	15	Buckling torque	270~1750Nm
6	Allowable maximum value of average load torque	28.5~238Nm	16	Max backlash	7~20 arc sec
7	Instant maximum allowable torque	77~712Nm	17	A side bolt tightened torque(Nm)	2~892Nm
8	Allowable maximum input speed	4800~8500 r/min	18	B side bolt tightened torque(Nm)	2~902Nm
9	Allowable average input speed	3500 r/min	19	J1	Φ74~Φ132
10	Moment of inertia	0.197~1.09 x10-4 J kgm-2	20	J2	Φ54~Φ100
21	D1*D2	M3~M5	22	D3*D4	M3~M5

It’s commonly used in robotics and other high-precision applications. Here’s a simple explanation of how it works:
Key Components

1. Wave Generator:

• An elliptical-shaped part that fits into a flexible bearing, causing it to change shape.

Flexspline:

• A flexible, thin-walled, cup-shaped gear with external teeth that can deform into an elliptical shape.

Circular Spline:

• A rigid, circular gear with internal teeth that remain stationary.

How It Works

1. Deformation and Engagement:

• The wave generator is inserted into the flexspline, making it form an elliptical shape.
• This shape causes some of the flexspline\’s teeth to engage with the circular spline’s teeth.

Movement:

• As the wave generator rotates, the flexspline\’s teeth move around and engage the circular spline’s teeth at two opposite points.
• The flexspline rotates at a slower speed because it has fewer teeth than the circular spline.

Output:

• The result is a high reduction in speed with increased torque, allowing for precise control of the output motion.

Advantages

• High Precision: Allows for precise movements with little to no backlash (looseness in gear engagement).
• High Torque: Provides strong force in a small package.
• Compact Design: Takes up less space than traditional gear systems, making it ideal for tight spaces.

Applications

• Robotics: For precise control of robotic joints and arms.
• Aerospace: Used in control mechanisms for aircraft and spacecraft.
• Industrial Machinery: In CNC machines and automation equipment.
• Medical Equipment: In surgical robots and imaging devices.