SITO DRIVE HS-32-III Harmonic Reducer, 50–120:1 Ratios for Robotics

SITO DRIVE

$401.00 USD

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Speed Ratio 50 80 100 120

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Overview

The SITO DRIVE HS-32-III harmonic reducer is offered in 50, 80, 100, and 120 transmission ratios for robotics applications including robotic arms, humanoid robots, exoskeletons, quadruped robots, AGV vehicles, and ARU robots. At a 2000 r/min input speed, rated torque varies by ratio from 76 to 137 Nm; backlash is ≤20 or ≤10 arcsec, depending on the selected ratio.

Features

High-toughness flexspline: Electroslag remelting, multi-stage forging, and repeated spin forming improve material purity and ductility, supporting fatigue resistance and helping reduce structural damage under overload.
Advanced ADI material: Fine-structured austempered ductile iron (ADI) provides self-lubricating properties, low temperature rise, vibration damping, reduced noise, and long service life across a broad operating temperature range.
Precision heat treatment: An optimized heat-treatment process balances hardness and toughness while controlling residual stress to improve fatigue performance.
Optimized flexspline tooth finishing: Tooth finishing after deformation improves meshing contact and load distribution, reducing friction and enhancing durability.
S-shaped tooth profile: Developed using kinematic, friction, and lubrication analysis, the S-shaped tooth geometry promotes smooth torque transmission and reduces friction during gear engagement.
Specialized precision tooling: Custom-developed machining tools support production of miniature harmonic reducers and precise gear components.
Performance testing: Testing covers service life, accuracy, starting torque, torsional stiffness, and load capacity to support product development and quality control.

Applications

Humanoid robots
Robotic arms
Exoskeletons
Quadruped robots
AGV vehicles
ARU robots

Specifications

Parameter	50 ratio	80 ratio	100 ratio	120 ratio
Model	HS-32-III	HS-32-III	HS-32-III	HS-32-III
Transmission ratio	50	80	100	120
Rated torque at 2000 r/min input	76 Nm	118 Nm	137 Nm	137 Nm
Peak torque allowed during start/stop	216 Nm	304 Nm	333 Nm	353 Nm
Maximum allowable average load torque	108 Nm	167 Nm	216 Nm	216 Nm
Instantaneous maximum torque	382 Nm	568 Nm	647 Nm	686 Nm
Maximum allowable input speed	4800 rpm	4800 rpm	4800 rpm	4800 rpm
Allowable average speed	3500 rpm	3500 rpm	3500 rpm	3500 rpm
Moment of inertia	1.69 (×10⁻⁴ kg·m²)	1.69 (×10⁻⁴ kg·m²)	1.69 (×10⁻⁴ kg·m²)	1.69 (×10⁻⁴ kg·m²)
Backlash	≤20 arcsec	≤20 arcsec	≤10 arcsec	≤10 arcsec