Product Description

Model No.

ID (mm)

OD

(mm)

Roller pitch circle diameter

(mm)

Width

(mm)

r min

(mm)

Shoulder height

ds (max.)

Shoulder height

Dh (min.)

RU28

10

52

28

8

0.3

24

29.5

RU42

20

70

41.5

12

0.6

37

47

RU52

25

80

52.5

12

0.6

46.5

58.5

RU66

35

95

66

15

0.6

59

74

RU85

55

120

85

15

0.6

79

93

RU124(G),

RU124X

80

165

124

22

1

114

134

RU148(G),
RU148X

90

210

147.5

25

1.5

133

162

RU178(G),
RU178X

115

240

178

28

1.5

161

195

RU228(G),
RU228X

160

295

227.5

35

2

208

246

RU297(G),
RU297X

210

380

297.3

40

2.5

272

320

RU445(G),
RU445X

350

540

445.4

45

2.5

417

473

Product Parameters

 

 

Company Profile

 

In 2013, 1 associates decided to create an innovative sales service of bearings to satisfy diffierent kinds of application.

In order to supply even more stable quality to our vast customers, we established a factory in HangZhou city, ZHangZhoug province, China, near HangZhou and ZheJiang port, which has recognized by special ISO. The various bearings we produce there have been inspected and confirmed by SGS to be RoHS compliant.

In order to satisfy our customer's diffierent industrial requirement: Advises, quick quotations, quick delievery, difficullt sourcing bearing products, the best suitable bearing(price, quality), We are working with over 300 suppliers to make sure to get the perfect part for you. We strive to offer the most precise and most suitable bearing for each part.

We Registered "GNYAR" in 2014, registered "MAJC" in 2018, both was received in high-performance praise, and earned high reputation among customers from motorcycle parts, auto parts and embroidery machine spare parts, Power tools, agricultural machine, bicycle, Semiconductor Facilities. Fitness Equipments, Toys, fishing, industrial using design.

After years of development, we believe that by establishing a mutually beneficial relationship with our customers we can both continue to grow and prosper, we wish and hope to always grant you satisfaction.

 

 

Packaging & Shipping

 

FAQ

 

Q1: Is sample free of charge?
A: Sample fee will be returned in the 1st PI payment .

Q2: How long it takes to ship goods to my country?
A: We have inventory for samples, normally 7 days to arrive at your office.

Q3: How is MOQ?
A: 500pcs with customized logo and color.

Q4: How long it takes to make a customized sample?
A: Normally the leadtime is 2-3 weeks since it requires logo tooling and color adjustment. 

Q5: how about quality?
A: Always a pre-production sample before mass production; Always final Inspection before shipment
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Contact Angle: 45°
Aligning: Aligning Bearing
Separated: Separated
Rows Number: Single
Load Direction: Radial Bearing
Material: Bearing Steel
Samples:
US$ 1/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

cross roller bearing

What are the challenges and solutions for managing complex loads and rotational accuracy in cross roller bearings?

Managing complex loads and maintaining rotational accuracy are crucial challenges in cross roller bearings. These bearings often encounter demanding operating conditions that require effective solutions to ensure optimal performance.

  • Challenges:
  • 1. Complex Loads: Cross roller bearings may experience a combination of radial, axial, and moment loads. These loads can vary in magnitude, direction, and frequency, posing challenges in distributing the loads evenly across the bearing structure and minimizing stress concentrations.

    2. Rotational Accuracy: Maintaining precise rotational accuracy is essential in applications where accurate positioning, motion control, and alignment are critical. Factors such as manufacturing tolerances, bearing clearance, and external disturbances can affect the rotational accuracy of cross roller bearings.

  • Solutions:
  • 1. Optimized Bearing Design: Cross roller bearings are designed with specific load capacities and rigidity to handle complex loads. Manufacturers optimize the bearing's internal geometry, material selection, and heat treatment processes to enhance load distribution and minimize stress concentrations. This enables the bearing to withstand varying loads and maintain structural integrity.

    2. Precision Manufacturing: Achieving high rotational accuracy starts with precision manufacturing processes. Tight manufacturing tolerances and stringent quality control measures help ensure consistent dimensions and geometries of the bearing components. This minimizes variations and deviations that can impact rotational accuracy.

    3. Preload and Clearance Adjustment: Proper preload and clearance adjustment are crucial for managing complex loads and maintaining rotational accuracy. Preload, achieved through controlled axial displacement or the use of spacers, eliminates internal clearance and enhances rigidity, reducing the effects of external forces. Careful adjustment of clearance ensures smooth operation while minimizing excessive play and maintaining accuracy.

    4. Lubrication: Lubrication plays a vital role in managing complex loads and rotational accuracy. Appropriate lubrication reduces friction, minimizes wear, and dissipates heat generated during operation. The selection of the right lubricant, based on operating conditions and load requirements, ensures smooth rotation and helps maintain accuracy over extended periods.

    5. Sealing and Contamination Control: Proper sealing and contamination control measures are essential for protecting cross roller bearings from external contaminants such as dust, dirt, and moisture. Seals and shields prevent ingress of harmful particles, maintaining the integrity of the bearing surfaces and minimizing wear that can affect rotational accuracy.

    6. Mounting and Alignment: Accurate mounting and alignment of cross roller bearings are critical for achieving optimal performance. Careful attention should be given to the mounting surfaces, ensuring flatness and perpendicularity, to minimize misalignment and stress concentrations that can impact load distribution and rotational accuracy.

In summary, managing complex loads and rotational accuracy in cross roller bearings requires optimized bearing design, precision manufacturing, proper preload and clearance adjustment, appropriate lubrication, sealing and contamination control, as well as accurate mounting and alignment. By addressing these challenges and implementing effective solutions, cross roller bearings can deliver reliable and precise performance in a wide range of applications.

cross roller bearing

How do cross roller bearings contribute to the proper functioning of aerospace components?

Cross roller bearings play a crucial role in ensuring the proper functioning of aerospace components. These bearings offer several benefits and contribute to the reliable and efficient operation of various aerospace systems. Here's a detailed look at how cross roller bearings contribute to the proper functioning of aerospace components:

  • Compact Design:
  • Cross roller bearings have a compact design that allows for efficient use of space in aerospace components. Their thin and lightweight structure enables them to be integrated into tight spaces without adding excessive weight or bulk. This compact design is especially advantageous in aerospace applications where weight reduction and space optimization are critical factors.

  • High Load Capacity:
  • Cross roller bearings are designed to handle high radial, axial, and moment loads. They feature crossed rollers arranged at right angles to one another, which enables them to distribute load forces in multiple directions. This high load capacity is essential in aerospace components that experience significant forces and loads during operation, such as landing gear systems, control surfaces, and actuators.

  • Stiffness and Precision:
  • Cross roller bearings offer high stiffness and precision, making them suitable for aerospace applications that require precise positioning and motion control. Their unique design and preloaded arrangement of rollers result in minimal deflection and high rigidity, ensuring accurate and repeatable performance. Aerospace components, such as robotic arms, control mechanisms, and guidance systems, benefit from the stiffness and precision of cross roller bearings.

  • Low Friction and Energy Efficiency:
  • Cross roller bearings are designed to minimize friction and energy losses. The rolling contact between the crossed rollers and raceways reduces friction, resulting in smooth and efficient motion. This low friction characteristic contributes to energy efficiency in aerospace systems, where reducing power consumption and maximizing operational efficiency are crucial considerations.

  • High-Speed Capability:
  • Cross roller bearings are capable of operating at high speeds without sacrificing performance. Their low rotational inertia and optimized design allow them to handle rotational speeds encountered in aerospace applications, such as turbine engines, gearbox systems, and rotating assemblies. The ability to maintain performance and reliability at high speeds is essential for aerospace components that operate under demanding conditions.

  • Reliability and Durability:
  • Cross roller bearings are engineered to provide high reliability and durability in aerospace environments. They are designed to withstand harsh operating conditions, including high temperatures, vibration, shock, and contamination. Aerospace components, such as aircraft engines, landing gear, and control systems, rely on the robustness and longevity of cross roller bearings to ensure continuous and safe operation throughout their service life.

In summary, cross roller bearings play a vital role in the proper functioning of aerospace components. Their compact design, high load capacity, stiffness, precision, low friction, high-speed capability, and reliability contribute to the efficiency, performance, and safety of various aerospace systems. By providing reliable motion control, load support, and durability, cross roller bearings are essential components in aerospace applications, enabling the successful operation of aircraft, spacecraft, and other aerospace platforms.

cross roller bearing

What advantages do cross roller bearings offer compared to other bearing types?

Cross roller bearings offer several advantages compared to other bearing types. Their unique design and configuration provide distinct benefits, making them preferred choices in various applications. Here are the advantages of cross roller bearings over other bearing types:

  • High Load Capacity:
  • Cross roller bearings can handle both radial and axial loads simultaneously, allowing them to support high load capacities. The arrangement of cylindrical rollers in a cross pattern enables efficient load distribution, resulting in improved load-carrying capacity compared to other bearing types. This makes cross roller bearings suitable for applications that require high load-carrying capability without sacrificing precision.

  • Space-Saving Design:
  • One of the significant advantages of cross roller bearings is their compact and space-saving design. The arrangement of rollers at right angles to each other and the thin-walled rings contribute to a slim profile. This compact design allows for efficient use of available space in applications where installation space is limited. Cross roller bearings are particularly advantageous in equipment and machinery where size and weight reduction are crucial factors.

  • High Rigidity:
  • Compared to other bearing types, cross roller bearings offer exceptional rigidity. The cross arrangement of rollers and the preloading of the bearing contribute to increased stiffness and resistance to deformation. This high rigidity ensures precise positioning and minimizes deflection under load, making cross roller bearings suitable for applications that demand high accuracy and stability, such as precision machining, robotics, and optical instruments.

  • Precision and Accuracy:
  • Cross roller bearings are known for their excellent rotational accuracy and precise motion control. The arrangement of rollers and the low-friction design result in minimal clearance and backlash, enabling precise positioning and smooth operation. This makes cross roller bearings ideal for applications that require high precision, such as machine tools, robotics, and scientific instruments.

  • Moment Load Capability:
  • Due to their unique design, cross roller bearings offer exceptional moment load-carrying capability. They can handle both radial and axial moments, making them suitable for applications with complex loads. The ability to withstand moments enables cross roller bearings to support rotational movements and resist forces acting perpendicular to the bearing axis. This makes them advantageous in applications such as robotics, rotary tables, and indexing heads.

  • Reduced Friction and Wear:
  • Cross roller bearings exhibit low friction and wear characteristics. The rolling motion of cylindrical rollers reduces sliding friction, resulting in improved efficiency and reduced heat generation. Additionally, the use of high-quality materials and advanced lubrication techniques further minimizes friction and wear, contributing to extended bearing life and reduced maintenance requirements.

In summary, cross roller bearings offer distinct advantages compared to other bearing types. Their high load capacity, space-saving design, high rigidity, precision and accuracy, moment load capability, as well as reduced friction and wear make them preferred choices in various applications. Whether it's in robotics, machine tools, medical equipment, or scientific instruments, the unique performance characteristics of cross roller bearings contribute to enhanced performance, reliability, and efficiency in numerous industrial sectors.

China Best Sales Ru42 Ru66 Ru85 Ru124 (G) Ru124X Ru148 (G) Cross Roller Bearings Mechanical Arm Wall Joint Bearings Rotary Bearing for Inner Rotor Direct Drive Motors   wholesalerChina Best Sales Ru42 Ru66 Ru85 Ru124 (G) Ru124X Ru148 (G) Cross Roller Bearings Mechanical Arm Wall Joint Bearings Rotary Bearing for Inner Rotor Direct Drive Motors   wholesaler
editor by CX 2024-04-12