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RU Series RU42 / RU42UU / RU42X / RU42UUCC0P5 / XRU2012 / CRBF2012AT 20x70x12mm High Precision Robot Arm Cross Roller Bearing
Product Overview
The RU Series 20x70x12mm Cross Roller Bearing includes models RU42, RU42UU, RU42X, RU42UUCC0P5, XRU2012, and CRBF2012AT, designed for high-precision robot arm and automation appliions.
This compact cross roller bearing features cylindrical rollers arranged alternately at 90°, allowing it to support radial loads, axial loads, and moment loads simultaneously. With a highly rigid integrated inner and outer ring structure, the RU42 series ensures stable rotation and accurate positioning in robotic joints and precision equipment.
The 20x70x12mm configuration is especially suitable for compact robotic systems where space saving and high precision are critical.
Key Features
Crossed cylindrical roller structure
Supports radial, axial, and moment loads simultaneously
Integrated ring design for improved rigidity
Compact size: 20x70x12mm
High precision grade (P5 optional)
Smooth rotation and low friction
Available in open and sealed (UU) versions
Available Models & Equivalents
Model
Description
RU42
Standard open type
RU42UU
Double sealed type
RU42X
Reinforced or special configuration
RU42UUCC0P5
Double sealed, P5 precision
XRU2012
Equivalent compact model
CRBF2012AT
Interchangeable model
(Custom preload classes and marking available.)
Technical Specifiions
Product Type: Cross Roller Bearing
Series: RU Series
Size: 20 * 70 * 12 mm
Precision Grade: P5 (customizable)
Material: High-grade bearing steel
Structure: Crossed cylindrical rollers
Sealing: Open / Double sealed (UU)
Appliion: Robot arms, rotary modules
Typical Appliions
The RU42 series cross roller bearing is widely used in:
Industrial robot arm joints
Robot wrist and elbow rotation
Compact automation modules
Precision rotary tables
Harmonic and RV reducers
Medical and semiconductor equipment
Why Choose GQZ Bearing
At GQZ Bearing, we supply precision robot bearings with stable performance and controlled manufacturing quality:
Strict dimensional accuracy inspection
Stable preload control for robotic appliions
Consistent batch quality
OEM marking and packaging support
Experience in robotics and automation export supply
Packaging & Supply
Anti-rust vacuum packaging
Industrial export carton
OEM packaging available
Flexible MOQ support
Air and sea freight options
FAQ – RU42 20x70x12mm Robot Cross Roller Bearing
1. What is the advantage of the RU42 cross roller structure?
The crossed roller arrangement allows the bearing to handle radial, axial, and moment loads at the same time, making it ideal for robotic arm joints that require high rigidity and precision.
2. What is the difference between RU42 and RU42UU?
RU42 is an open type, while RU42UU features double seals for improved dust protection and longer service life in enclosed robotic systems.
3. Can P5 precision and preload be customized?
Yes. We can provide P5 precision grade and customized preload levels based on your robotic system requirements.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company
Year Established:
1989
Total Annual:
1000000-10000000
Employee Number:
10~100
Ecer Certification:
Verified Supplier
Established in 1999, Wuxi Guangqiang Bearing Trade Co.,Ltd works hard in researching and manufacturing high quality bearings and rely on it's advantages of strong technologies, advanced equipment, professional technical team, quality production and reasonable prices has gain a broad... Established in 1999, Wuxi Guangqiang Bearing Trade Co.,Ltd works hard in researching and manufacturing high quality bearings and rely on it's advantages of strong technologies, advanced equipment, professional technical team, quality production and reasonable prices has gain a broad...