Technical data sheet
NexBot Robotics HRM121-001 Harmonic Gearbox 100:1 — Technical Datasheet
Use for specifications, dimensions, ratings, and technical fit checks.
Key facts
SKU
NXB-GBX-HRM121-001
Brand
NexBot Robotics
Product type
Component
Category
Harmonic Gearboxes
Dimensions
121 x 121 x 48 mm
Torque
121 Nm Peak
Material
Aluminum Alloy Housing, Steel Components
Weight
1.8 kg
Component
NexBot Robotics HRM121-001 Harmonic Gearbox 100:1
4.6Read 4 reviewsHigh-precision harmonic gearbox designed for zero-backlash operation in robotic joints. Delivers 121 Nm peak torque with a 100:1 gear ratio.
List price
$2,250.00
In stock299 units available across stocked locations
Fastest fulfillment: APAC-East Warehouse · Shanghai, CN
Technical documents
Specification, installation, and operating documents
Access the current technical documentation, installation references, and operating materials for this SKU.
Installation guide
NexBot Robotics HRM121-001 Harmonic Gearbox 100:1 — Installation Guide
Use for commissioning steps, mounting details, and setup prerequisites.
User manual
NexBot Robotics HRM121-001 Harmonic Gearbox 100:1 — User Manual
Use for operating instructions, maintenance guidance, and day-two reference.
Documentation and service
Related guidance and service history
Review product-specific service guidance, troubleshooting references, and resolved case history relevant to this SKU.
Documentation guidance
Documentation article
How-ToAdvancedR-20, R-50, C-10
Similar products
Explore similar products
Alternative products for similar robotics applications and replacement scenarios.
Compatible robots
Compatible robots for this part
Robots and install bases that explicitly list this part as a compatible replacement or service component.
Compatible parts
These parts fit this product
Additional compatible parts suggested from the merchandising slot for this product.
Customers also bought
Frequently purchased together
Three products stay in view on large screens, and you can scroll for more related replacements, add-ons, and service-driven purchases.
Reviews
What customers are saying
4.6· 4 reviews
Review buyer feedback for NexBot Robotics HRM121-001 Harmonic Gearbox 100:1, including the strongest recurring themes and recent comments from the field.
PerformanceReliabilityCommissioning speed
MV
Marcus Vance
Exceptional Precision and Zero Backlash as Advertised
We integrated the HRM121-001 into a custom 6-axis arm for a high-speed electronics assembly application. ... Positional deviation is well within our tight tolerances, even after thousands of ...
True zero-backlash operationHigh torsional stiffnessEasy integration
EP
Elena Petrova
Solid Performer, Direct Replacement for a Failing Unit
The NexBot HRM121 was a direct fit, saving us significant time on modifications. Since installation, the robot's path accuracy has noticeably improved, and we've ... Pros ... Cons
Improved positioning accuracyDurable constructionDrop-in replacement for similar form factors
DC
David Chen
Functional Gearbox, but Documentation Needs Improvement
We're using this harmonic drive for the primary rotary axis on an in-house packaging ... The gearbox itself performs adequately; it holds its position well and provides ... Smooth operation
Good positional holding torqueSmooth operation