CSF-1U Miniature Harmonic Drive Gear Unit with Input and Output Shaft
Easy to use miniature harmonic drive gear unit featuring both input and output shaft for direct motor coupling in five compact sizes
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Product Overview
The CSF-1U miniature gear unit features both an input and output shaft making it easy to use. Available in five sizes from 3 to 14mm with outer diameter 20mm to 50mm and four reduction ratios 30 to 100. Peak torque ranges from 0.22 Nm at size 3 up to 54 Nm at size 14.
The CSF-1U is a precision zero-backlash gear unit designed for compact motion systems requiring high torque density, repeatable positioning, and simplified mechanical integration.
Precision Gear Unit Architecture
Harmonic Drive gear units deliver zero backlash, high torque density, and exceptional positioning accuracy in a complete housed assembly. The cross roller output bearing directly supports loads without additional bearings, simplifying mechanical design and reducing system cost.
Zero Backlash
Strain wave gear principle eliminates all backlash for bidirectional positioning without dead band.
High Torque Density
Compact housing delivers high repeated peak torque relative to size and weight.
Cross Roller Output
Integrated cross roller bearing supports radial, axial, and moment loads directly.
High Accuracy
Standard accuracy less than 1 arc-min across the full range of available sizes.
High Stiffness
Torsional stiffness K1/K2/K3 data available for all sizes for system compliance analysis.
Compact Housed Assembly
Complete housed gear unit reduces external support hardware and simplifies mechanical integration.
Typical Applications
The CSF-1U suits robot joint axes, rotary index tables, semiconductor wafer handling stages, machine tool rotary axes, precision gantry drives, and any application requiring zero backlash speed reduction with direct load attachment.
Key Specifications
Critical performance parameters at a glance
Technical Specifications
Overview
Size 3 Performance
Size 5 Performance
Size 8 Performance
Size 11 Performance
Size 14 Performance
Product Attributes
Industrial Applications
These precision gear units are used in robotics, automation, indexing, and motion-control systems where compact size, high reduction ratios, and low backlash are important.
Robotic Joint Drives
Used in articulated robots and cobots where compact reduction, repeatability, and torsional stiffness are needed at shoulder, elbow, and wrist axes.
Industrial Automation
Supports servo-driven automation modules, transfer systems, and precision machinery requiring stable motion transmission and high positional repeatability.
Indexing & Positioning
Applied in rotary stages, indexing tables, and positioning assemblies where precise angular motion and stable output characteristics matter.
Precision Equipment
Fits compact motion systems in semiconductor, optical, and laboratory equipment where size, smooth motion, and integration quality are critical.
Mobile Robotics
Used in AGVs, AMRs, and service robots where efficient packaged motion reduction helps simplify drivetrain or auxiliary-axis integration.
Custom Machinery
Integrated into OEM machine builds that need reliable high-ratio motion reduction with predictable performance and a compact footprint.
Factory Modification & Custom Sourcing
This product supports custom configurations and equivalent sourcing
Available Modifications
- •Torque and speed ratio customization
- •Mounting interface modifications
- •Connector and wiring specifications
- •Housing and enclosure options
Sourcing Options
- •Standard product sourcing
- •Equivalent product identification
- •Replacement part sourcing
- •Volume pricing (MOQ may apply)
Request Pricing & Availability
Submit an RFQ for standard products, custom configurations, or equivalent alternatives
Frequently Asked Questions
Technical answers sourced from engineering specifications and integration guides.
The CSF-1U features both input and output shafts making it easy to integrate with shaft couplings. Available in 5 sizes from 3 to 14 mm with ratios 30 to 100 and peak torques from 0.22 to 54 Nm.
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Our application engineers review every RFQ and respond with specification-matched recommendations.