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The RU66UU is a highly rigid, compact crossed roller bearing measuring 35 mm (ID) × 95 mm (OD) × 15 mm (Width). Designed with one-piece (integral) inner and outer rings, it features built-in mounting holes that eliminate the need for cumbersome housing flanges. Equipped with double lip seals (UU) to protect against contamination, this bearing can handle complex radial, axial, and moment loads simultaneously. It is the premier choice for precision robotics, rotating indexing tables, and hollow-shaft rotary actuators. We provide fast B2B fulfillment with customizable clearance and precision grades.
The RU Series Crossed Roller Bearing (specifically the RU66) features cylindrical rollers arranged perpendicularly to one another in a single 90° V-groove raceway. What sets the RU series apart is its unified design: both the inner and outer rings are solid, single-piece constructions with pre-drilled mounting holes. This structure allows the bearing to be bolted directly directly to the machine frame, drastically reducing mounting errors and achieving highly stable rotational accuracy, whether the inner or outer ring is rotating.
Review the exact dimensional and load data below to ensure proper integration into your rotary mechanism.
Item | Specification |
|---|---|
Model Number | RU66UU (Equivalent: CRBF3515AT) |
Inner Diameter (d) | 35 mm |
Outer Diameter (D) | 95 mm |
Width (T / B) | 15 mm |
Mounting Holes (Inner Ring) | 8 × M4 Through holes (PCD 45mm) |
Mounting Holes (Outer Ring) | 8 × Ø4.5 Through holes (PCD 83mm) |
Seal Type | UU (Seals attached on both ends) |
Dynamic Load Rating (C) | 17.5 kN |
Static Load Rating (C0) | 22.3 kN |
Weight | ≈ 0.60 kg |
To meet the specific torque and rigidity requirements of your application, the RU66UU can be customized with different radial clearances:
C0 (Standard Clearance): Slight clearance for general rotary applications where low friction is prioritized.
CC0 / S1 (Preloaded): Negative clearance (without backlash). This provides maximum stiffness and instant directional response, essential for high-precision robotic arms.
Precision Class: Available in standard P0, or upgraded P5/P4 classes for applications demanding virtually zero runout.
Because it eliminates the need for separate presser flanges, the RU66UU drastically saves space and weight in high-tech industries:
Joints, swivel units, and waists of industrial and collaborative robots.
Direct drive motors and hollow-shaft rotary actuators.
High-precision optical and medical inspection turntables.
Semiconductor manufacturing equipment.
We are a dedicated manufacturer providing robust supply chain solutions for automation equipment builders and bearing wholesalers worldwide.
Quality Assurance: Manufactured from premium bearing steel with rigorous quality control.
Customization: We can modify mounting hole sizes, thread types (tapped vs. counterbore), and grease types upon request.
Logistics: Flexible shipping options with secure industrial packaging to protect against transit shock. Contact us today for competitive volume pricing.
The RU Series Crossed Roller Bearing (specifically the RU66) features cylindrical rollers arranged perpendicularly to one another in a single 90° V-groove raceway. What sets the RU series apart is its unified design: both the inner and outer rings are solid, single-piece constructions with pre-drilled mounting holes. This structure allows the bearing to be bolted directly directly to the machine frame, drastically reducing mounting errors and achieving highly stable rotational accuracy, whether the inner or outer ring is rotating.
Review the exact dimensional and load data below to ensure proper integration into your rotary mechanism.
Item | Specification |
|---|---|
Model Number | RU66UU (Equivalent: CRBF3515AT) |
Inner Diameter (d) | 35 mm |
Outer Diameter (D) | 95 mm |
Width (T / B) | 15 mm |
Mounting Holes (Inner Ring) | 8 × M4 Through holes (PCD 45mm) |
Mounting Holes (Outer Ring) | 8 × Ø4.5 Through holes (PCD 83mm) |
Seal Type | UU (Seals attached on both ends) |
Dynamic Load Rating (C) | 17.5 kN |
Static Load Rating (C0) | 22.3 kN |
Weight | ≈ 0.60 kg |
To meet the specific torque and rigidity requirements of your application, the RU66UU can be customized with different radial clearances:
C0 (Standard Clearance): Slight clearance for general rotary applications where low friction is prioritized.
CC0 / S1 (Preloaded): Negative clearance (without backlash). This provides maximum stiffness and instant directional response, essential for high-precision robotic arms.
Precision Class: Available in standard P0, or upgraded P5/P4 classes for applications demanding virtually zero runout.
Because it eliminates the need for separate presser flanges, the RU66UU drastically saves space and weight in high-tech industries:
Joints, swivel units, and waists of industrial and collaborative robots.
Direct drive motors and hollow-shaft rotary actuators.
High-precision optical and medical inspection turntables.
Semiconductor manufacturing equipment.
We are a dedicated manufacturer providing robust supply chain solutions for automation equipment builders and bearing wholesalers worldwide.
Quality Assurance: Manufactured from premium bearing steel with rigorous quality control.
Customization: We can modify mounting hole sizes, thread types (tapped vs. counterbore), and grease types upon request.
Logistics: Flexible shipping options with secure industrial packaging to protect against transit shock. Contact us today for competitive volume pricing.
