Best Sumitomodrive Fine Cyclo UA-Series Supplier, Products

A spur gear pre-stage and three or four (UA115) eccentric gears ensure high transmission accuracy, minimal speed fluctuation, and minimal vibration.

The new UA series offers significant improvements in torque density, positioning accuracy, and motion accuracy. Furthermore, the fine-cycle UA series features an improved output bearing, maintaining high efficiency even at low speeds.

Motion loss less than 0.5 arcminutes

Suitable for lateral motion applications

Highest torque density on the market

Highest total torque

Enables high input/output speeds

Other gear ratios available upon request

Product Description

Product Overview
The Drive Fine Cyclo UA-Series is a high-precision, low-backlash, compact cycloidal servo gearmotor. Engineered utilizing advanced cycloidal disc technology, it is optimized for demanding motion control applications, delivering exceptional load capacity and versatile installation configurations.
Core Performance Advantages

Low Backlash Design: Standard backlash as low as 3 arc minutes (1 arc minute for select models), delivering high repeatability for positioning-critical applications.

High Load Capacity & Shock Resistance: Leverages a unique cycloidal structure with 2/3 tooth engagement, allowing it to withstand 300% instantaneous shock loads. Output torque ranges from 4.9 to 588 N·m.

High Efficiency & Low Noise: Rolling contact transmission minimizes friction, achieving transmission efficiency exceeding 95% with operational noise below 65 dB.

Flexible Adaptability & Design

Motor Compatibility: Power-matched for 0.1–7.5 kW servo motors, with reduction ratios ranging from 3:1 to 100:1. Supports single-stage/two-stage configurations.

Multiple Mounting Options: Offers flange, base, and shaft mounting configurations. The compact body allows horizontal or vertical installation in any orientation.

Easy Maintenance: Prefilled with long-life grease for near-maintenance-free operation. Features an IP65 dust and water-resistance sealed structure.

Material & Structural Upgrades

Transmission components utilize vacuum-degassed bearing steel with full hardening treatment for superior wear resistance.

The housing is constructed from high-strength aluminum alloy or cast iron, achieving a lightweight design while maintaining optimal rigidity.

The input shaft employs a flexible coupling design for motor connection, effectively absorbing installation misalignment and vibration to extend overall service life.

Typical Application Scenarios

Optimized for precision motion control, this series is highly suitable for:

• Industrial robot joint drives

• Precision assembly lines for electronic devices

• Automated inspection equipment and medical devices

• Scenarios requiring high-frequency start/stop cycles and precise positioning

Specifications
Zero Mechanical Backlash Performance Details
Lost Motion <0.5 arcmin
Number of Sizes 8
Reduction Ratios 60:1 to 283:1 (availability depending on size)
Nominal Output Torque 174 Nm up to 16685 Nm
Acceleration Torque 625 Nm up to 30000 Nm
Max. Momentary Peak Torque 1250 Nm up to 60000 Nm
Output Speed up to 60 rpm
Max. Bending Moment 883 Nm up to 44000 Nm
Bending Stiffness up to 25000 Nm/arcmin
Max. Axial Load 3924 N up to 29000 N
Torsional stiffness up to 6000 Nm/arcmin
Models
Available Models: Drive Fine Cyclo UA-Series
Delivery Information
Delivery information typically includes delivery times, shipping methods, packaging, etc., which may vary depending on the seller and the location of purchase.
Manuals & Resources
Fine Cyclo UA-Series Product Document Image
Drive Fine Cyclo UA-Series Document
Drive Fine Cyclo UA-Series.pdf
Download Documentation
Frequently Asked Questions
What is the typical backlash of the Drive Fine Cyclo UA-Series?
The series features a standard backlash as low as 3 arc minutes, with select models offering precision down to 1 arc minute, ensuring high repeatability for positioning-critical applications.
How well does the UA-Series handle sudden shock loads?
Due to its cycloidal design where 2/3 of the tooth surface remains engaged simultaneously, the gearmotor is highly durable and capable of withstanding up to 300% instantaneous shock loads.
What are the power and reduction ratio ranges for these gearmotors?
The Drive Fine Cyclo UA-Series is power-matched for 0.1 kW to 7.5 kW servo motors. It supports reduction ratios ranging from 3:1 up to 100:1, with configurations allowing up to 283:1 depending on the specific frame size.
Does the Drive Fine Cyclo UA-Series require regular maintenance?
No, the unit comes prefilled with long-life grease, designed for near maintenance-free operation throughout its entire lifecycle. Additionally, the IP65 dust and water-resistance rating ensures reliable protection in harsh working environments.
What are the main application areas for this gearmotor series?
It is widely used in high-precision motion control systems, such as industrial robot joint drives, electronic assembly lines, automated inspection systems, medical devices (e.g., surgical robots), and lithium battery cutting equipment.

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