Product Description

 

Product Description

Product Attributes
CZPT Part Number    CRBFV8571AT
THK Part Number    RU124
Bearing Type    Roller
Roller Bearing Type    Crossed
For Load Direction    Combined Radial; Thrust; and Moment
Construction    Single Row
Seal Type    Open
ABEC Rating    ABEC-5 ABEC-7 ABEC-9
Ring Material    Steel
Roller Material    Steel
Shaft dia. mm    80
Mass(kg)    2.6
Bore Dia (d)    80
Outer Dia (D)    165
Width (B)    22
Greasing hole(d1)    3.1
r(min)    1
Shoulder height ds(max)    114
Shoulder height Dh(min)    134
Basic load rating (radial)C kN    33.1
Basic load rating (radial)Co kN    50.9
Inner ring PCD1    97
Lubrication    Required
Shaft Mount Type    Press Fit
Temperature Range    0 -230
Inner ring Mounting hole    10-M5 through
Outer ring PCD2    148
Outer ring Mounting hole    10-φ5.5 through φ9.5 counter bore depth 5.4

 

RU series(Integrated Inner/Outer Ring type) Since the mounting holes are provided, the model does not require a presser flange or housing. In addition, because it has an integrated inner/outer ring structure and is equipped with washers, its performance is minimally affected by the mounting procedure, ensuring stable rotation accuracy and torque. 

 

 

Crossed Roller Bearings:

 

Cross Roller Bearings are a type of roller bearing with high rotation accuracy capable of bearing loads in every direction. Because it has orthogonally arranged cylindrical rollers, it can bear loads in every direction. This lets 1 crossed roller bearing replace more than 1 ball bearing, thus saving the space required by ball bearings, lowering the associated material costs.

Key benefits of cross roller bearings:
High load capacity: cross roller bearings are designed to heavy loads in compact spaces 
Unique Design: rollers arranged perpendicular to the axis of rotation which ensures smooth and precise operation through rigidity and accuracy
Durability: highly durable and built to last minimizing downtime and maintenance costs
 

Applications:

Crossed roller bearings are commonly used in precision machinery, robotics, CNC machines, and semiconductor manufacturing equipment.

 

Types Cross Roller Bearings:
 1. RA series

 2. RB series

 3. RU series

 4. SX series

 5. XU series

 6. XSU series

 7. XR/JXR series

 8. CRBF series

 9. CRBS series

10.CRBH series

11.CRBT series

 

 

Technical parameter of precision cross cylindrical roller bearings :

RA series:

TYPE Inner diameter Outer diameter Pitch diameter Height Chamfer Shoulder size   Basic rated load(Radial)   Weight
  d D Dpw B r ds Dh Cr Kn Cor Kn KG
RA 5008 50 66 57 8 0.5 53.5 60.5 5.1 7.19 0.08
RA 6008 60 76 67 8 0.5 63.5 70.5 5.68 8.68 0.09
RA 7008 70 86 77 8 0.5 73.5 80.5 5.98 9.8 0.1
RA 8008 80 96 87 8 0.5 83.5 90.5 6.37 11.3 0.11
RA 9008 90 106 97 8 0.5 93.5 100.5 6.76 12.4 0.12
RA 10008 100 116 107 8 0.5 103.5 110.5 7.15 13.9 0.14
RA 11008 110 126 117 8 0.5 113.5 120.5 7.45 15 0.15
RA 12008 120 136 127 8 0.5 123.5 130.5 7.84 16.5 0.17
RA 13008 130 146 137 8 0.5 133.5 140.5 7.94 17.6 0.18
RA 14008 140 156 147 8 0.5 143.5 150.5 8.33 19.1 0.19
RA 15008 150 166 157 8 0.5 153.5 160.5 8.82 20.6 0.2
RA 16013 160 186 172 13 0.8 165 179 23.3 44.9 0.59
RA 17013 170 196 182 13 0.8 175 189 23.5 46.5 0.64
RA 18013 180 206 192 13 0.8 185 199 24.5 49.8 0.68
RA 19013 190 216 202 13 0.8 195 209 24.9 51.5 0.69
RA 20013 200 226 212 13 0.8 205 219 25.8 54.7 0.71

RB series:

Model No. Outer dimension (mm) Installation dimension (mm) Rated load (Kn) Weight
d D B/C Rmin da Da C C0 kg
RB2008 20 36 8 0.5 23.5 30.5 3.23 3.1 0.04
RB2508 25 41 8 0.5 28.5 35.5 3.63 3.83 0.05
RB3571 30 55 10 0.6 37 47 7.35 8.36 0.12
RB3510 35 60 10 0.6 41 51.5 7.64 9.12 0.13
RB4571 40 65 10 0.6 47.5 57.5 8.33 10.6 0.16
RB4510 45 70 10 0.6 51 61.5 8.62 11.3 0.17
RB5013 50 80 13 0.6 57.4 72 16.7 20.9 0.27
RB6013 60 90 13 0.6 68 82 18 24.3 0.3
RB7013 70 100 13 0.6 78 92 19.4 27.7 0.35
RB8016 80 120 16 0.6 91 111 30.1 42.1 0.7
RB9016 90 130 16 1 98 118 31.4 45.3 0.75
RB10016 100 140 16 1 109 129 31.7 48.6 0.83
RB1571 100 150 20 1 113 133 33.1 50.9 1.45
RB11012 110 135 12 0.6 117 127 12.5 24.1 0.4
RB11015 110 145 15 0.6 122 136 23.7 41.5 0.75
RB11571 110 160 20 1 120 143 34 54 1.56
RB12016 120 150 16 0.6 127 141 24.2 43.2 0.72
RB12571 120 180 25 1.5 133 164 66.9 100 2.62
RB13015 130 160 15 0.6 137 152 25 46.7 0.72
RB13571 130 190 25 1.5 143 174 69.5 107 2.82
RB14016 140 175 16 1 147 162 25.9 50.1 1
RB14571 140 200 25 1.5 154 185 74.8 121 2.96
RB15013 150 180 13 0.6 157 172 27 53.5 0.68

RB15571 150 210 25 1.5 164 194 76.8 128 3.16
RB15030 150 230 30 1.5 173 211 100 156 5.3
RB16571 160 220 25 1.5 173 204 81.7 135 3.14
RB17571 170 220 20 1.5 184 198 29 62.1 2.21
RB18571 180 240 25 1.5 195 225 84 143 3.44
RB19571 190 240 25 1 202 222 41.7 82.9 2.99
RB20571 200 260 25 2 215 245 84.2 157 4
RB20030 200 280 30 2 221 258 114 200 6.7
RB20035 200 295 35 2 225 270 151 252 9.6
RB22571 220 280 25 2 235 265 92.3 171 4.1
RB24571 240 300 25 2.5 256 281 68.3 145 4.5
RB25571 250 310 25 2.5 265 290 69.3 150 5
RB25030 250 330 30 2.5 269 306 126 244 8.1
RB25040 250 355 40 2.5 275 326 195 348 14.8
RB30571 300 360 25 2.5 315 340 76.3 178 5.9
RB30035 300 395 35 2.5 322 368 183 367 13.4
RB30040 300 405 40 2.5 326 377 212 409 17.2
RB35571 350 400 20 2.5 363 383 54.1 143 3.9
RB40035 400 480 35 2.5 422 459 156 370 14.5
RB40040 400 510 40 2.5 428 479 241 531 23.5
RB45571 450 500 25 1 464 484 61.7 182 6.6
RB50571 500 550 25 1 514 534 65.5 201 7.3
RB50040 500 600 40 2.5 526 572 239 607 26
RB50050 500 625 50 2.5 536 587 267 653 41.7
RB60040 600 700 40 3 627 673 264 721 29
RB70045 700 815 45 3 731 777 281 836 46
RB80070 800 950 70 4 836 900 468 1330 105
RB90070 900 1050 70 4 937 1001 494 1490 120
RB1000110 1000 1250 110 5 1057 1171 1220 3220 360
RB1250110 1250 1500 110 5 1308 1423 1350 3970 440

RU series:

Designation

Size

Shoulder dimension

Basic Load rating

Quality

Model

d

D

Dpw

B

rmin

ds  Dh

Cr
kN

Cor
kN

Kg

RU28

10 52 27.3 8 0.3 24 29.5 29 24 0.12

RU42

20 70 41.5 12 0.6 37 47 7.35 8.35 0.29

RU66

35 95 66 15 0.6 59 74 17.5 22.3 0.62

RU85

55 120 85 15 0.6 79 93 20.3 29.5 1

RU124(G)
RU124X

80 165 124 22 1 114 134 33.1 50.9 2.6

RU148(G)
RU148X

90 210 148 25 1.5 133 162 49.1 76.8 4.9

RU178(G)
RU178X

115 240 178 28 1.5 161 195 80.3 135 6.8

RU228(G)
RU228X

160 295 227.5 35 2 208 246 104 173 11.4
RU297(G)
RU297X
210 380 297.3 40 2.5 272 320 156 281 21.3
RU445(G)
RU445X
350 540 445.4 45 2.5 417 473 222 473 3504

 

Packaging & Shipping

Packing:

Please contact us for more pictures of different packing.

Universal Packing

Without any logo on bearings or packing.

JDZ Packing

With our brand JDZ on bearings and packing.

Customized Packing

Depends on buyer's requirements.

Original Brand Packing

Bearing and packing are both original. Please contact us for pictures.

 

QUALITY ASSURANCE

100% Quality inspection to ensure the bearings are with good quality before shipping. 

Company Profile

 

 

ZheJiang CZPT Precision Bearing Co.,Ltd. was founded by ZheJiang Defa Bearing Co.,Ltd, factory is located in ZheJiang province, China. 
We are a bearing manufacturer integrating the research, development and sales of bearings, with a floor area of 18,000 square meters and a plant area of 8,800 square meters. Equipped with modern production equipment and advanced detection instruments. 

We can provide all types bearings and OEM service according to customers' requirements. 

Our products are widely used in the automobile, agricultural, textile production, mining, printing and packing industries, in addition to various applications at airports, in air-conditioning systems, conveying devices, ships ad so on. Our products are being exported to more than 50 countries and regions overseas including Singapore, Thailand, Iran, Turkey, Poland, Italy, England, France, Russia, Germany, the United States, Australia, Argentina, Brazil as well as other countries and regions all over the world.

We are a trusted and reliable bearing supplier, choose us to be your good partner!

More choices

 

FAQ

1. Q: Are you trading company or manufacturer ?
   A: We have our own factory , our type is factory + trade.

2. Q: Could you accept OEM and customize?
    A: Yes, we can customize products according to your sample or drawing.

3. Q: How long is your delivery time? 
    A: If stock, within 7 days to ship or based on your order quantity.

4. Q: Could you supply sample for free? 
    A: Yes, we can offer the sample for free,do you mind to buy a "ticket" for her?

More details, please contact with us. Thanks for your time!

 

 

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Standard or Nonstandard: Standard
Feature: High Speed, Vacuum, Antimagnetic, Cold-Resistant, Corrosion-Resistant, Heat-Resistant
Sealing Gland: Non-Seal
Rolling-Element Number: Single-Row
Roller Type: Straight Raceway
Material: Bearing Steel
Samples:
US$ 0.1/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

cross roller bearing

How do cross roller bearings contribute to the efficient operation of robotics and automation systems?

Cross roller bearings play a vital role in enhancing the efficiency of robotics and automation systems. These bearings offer several benefits that contribute to the overall performance and reliability of such systems. Here are the ways in which cross roller bearings contribute to the efficient operation of robotics and automation systems:

  • Precision Motion Control:
  • Cross roller bearings provide precise and smooth motion control, which is essential for the accurate positioning and movement of robotic arms, joints, and other automated components. The low friction and high stiffness of these bearings enable precise control of motion, ensuring accurate and repeatable operations in robotics and automation systems.

  • High Rigidity:
  • Rigidity is crucial in robotics and automation systems to maintain stability and eliminate undesired vibrations or deflections. Cross roller bearings are designed to have high rigidity, allowing them to withstand external forces and loads without significant deformation. This rigidity improves the overall system performance, enabling precise and reliable operation even in demanding applications.

  • Compact Design:
  • Space optimization is often a critical factor in robotics and automation systems, where components need to be compactly arranged. Cross roller bearings have a compact design that minimizes the required installation space. Their thin and lightweight construction allows for efficient integration into robotic arms, joints, and other automated mechanisms without compromising performance.

  • Load Capacity:
  • Robotics and automation systems often need to handle various loads, including radial, axial, and moment loads. Cross roller bearings are specifically designed to provide high load capacity in all directions. They can support significant loads while maintaining their structural integrity, ensuring the efficient operation of the system even under demanding load conditions.

  • Reduced Friction and Energy Consumption:
  • Cross roller bearings exhibit low friction characteristics, resulting in reduced energy consumption in robotics and automation systems. The reduced friction minimizes power losses and heat generation, allowing the system to operate more efficiently. This energy efficiency is particularly important in applications where power consumption needs to be optimized for extended operation or to meet specific energy requirements.

  • Durability and Longevity:
  • The durability and longevity of cross roller bearings contribute to the efficiency of robotics and automation systems by reducing downtime and maintenance requirements. These bearings are designed to withstand repeated use, high-speed operations, and harsh operating conditions. Their robust construction and high-quality materials ensure reliable performance and extended service life, enhancing the overall efficiency and productivity of the system.

In summary, cross roller bearings contribute to the efficient operation of robotics and automation systems through precision motion control, high rigidity, compact design, high load capacity, reduced friction and energy consumption, as well as durability and longevity. By incorporating cross roller bearings into their designs, robotics and automation systems can achieve optimal performance, accuracy, and reliability, leading to increased productivity, improved efficiency, and reduced maintenance requirements.

cross roller bearing

Can you explain the role of preloading in optimizing the performance of cross roller bearings?

Preloading plays a crucial role in optimizing the performance of cross roller bearings. It involves applying a controlled axial force to the bearing to eliminate internal clearance and ensure proper contact between the rolling elements and raceways. Preloading offers several benefits that enhance the performance of cross roller bearings:

  • Increased Stiffness:
  • Preloading significantly increases the stiffness of the bearing system. By eliminating internal clearance, it minimizes the play or deflection between the rolling elements and raceways. This increased stiffness improves the rigidity of the bearing, allowing it to resist deformations and maintain precise positioning and alignment. The increased stiffness is particularly advantageous in applications that require high precision and stability, such as machine tools or robotic systems.

  • Reduced Elastic Deformation:
  • Preloading helps reduce elastic deformation within the bearing under load. When a load is applied to a bearing, elastic deformation can occur, resulting in a temporary change in the internal clearance. This can lead to inaccuracies in positioning and decreased performance. By applying preloading, the bearing is already under some initial load, reducing the elastic deformation when additional loads are applied. This minimizes the change in internal clearance, enhancing the accuracy and repeatability of the bearing system.

  • Improved Axial and Radial Stiffness:
  • Preloading enhances both the axial and radial stiffness of cross roller bearings. It improves the resistance to both axial and radial loads, ensuring better load distribution and load-carrying capacity. The increased stiffness helps to maintain the integrity of the bearing structure and minimize deflections or deformations, even under high loads or dynamic operating conditions. This results in improved performance, reduced vibration, and enhanced overall system stability.

  • Elimination of Clearance-Related Issues:
  • Preloading eliminates clearance-related issues that can affect the performance of cross roller bearings. Internal clearance in bearings can lead to backlash, which is undesirable in applications requiring precise motion control. Backlash can result in inaccuracies, positioning errors, and reduced responsiveness. By applying preloading, the clearance is eliminated, ensuring immediate and precise response to input forces or motion commands. This is crucial in applications such as robotics, where precise positioning and control are critical.

  • Enhanced System Rigidity:
  • By optimizing the stiffness and eliminating clearance, preloading enhances the overall rigidity of the bearing system. This increased rigidity improves the system's ability to resist external disturbances, such as vibrations or shocks. It helps maintain the desired positioning and alignment of components, ensuring stability and accuracy. The enhanced system rigidity contributes to improved overall performance and reliability of the application.

  • Compensation for Wear:
  • Over time, normal wear and tear can lead to a slight increase in internal clearance in bearings. By applying preloading, the initial clearance is reduced, compensating for any potential wear. This helps to maintain the desired performance and accuracy of the bearing system even as it ages. Preloading can extend the effective service life of cross roller bearings by compensating for wear-related changes in internal clearance.

In summary, preloading plays a vital role in optimizing the performance of cross roller bearings. It increases stiffness, reduces elastic deformation, improves axial and radial stiffness, eliminates clearance-related issues, enhances system rigidity, and compensates for wear. By applying preloading, the bearing system achieves higher precision, better load distribution, improved stability, and increased reliability. It is essential to carefully determine and apply the appropriate preloading force based on the specific application requirements to achieve the desired performance benefits.

cross roller bearing

How does proper lubrication impact the performance and longevity of cross roller bearings?

Proper lubrication plays a crucial role in the performance and longevity of cross roller bearings. It ensures smooth operation, reduces friction and wear, minimizes heat generation, and protects the bearing surfaces. Here's a detailed explanation of how proper lubrication impacts the performance and longevity of cross roller bearings:

  • Reduces Friction and Wear:
  • Lubrication forms a thin film between the rolling elements (rollers) and the raceways of the cross roller bearing. This film reduces direct contact between the surfaces, minimizing friction and wear. By providing a lubricating layer, proper lubrication helps to prevent metal-to-metal contact, which can lead to surface damage and premature failure of the bearing.

  • Minimizes Heat Generation:
  • During operation, cross roller bearings can generate heat due to friction between the rolling elements and the raceways. Proper lubrication helps dissipate this heat by reducing friction. The lubricating film acts as a thermal barrier, carrying away heat from the bearing surfaces. Effective heat dissipation ensures that the bearing operates within the desired temperature range, preventing overheating and potential damage.

  • Prevents Contamination:
  • Lubrication also helps to prevent the ingress of contaminants such as dust, dirt, moisture, and other particles into the bearing. The lubricant forms a protective barrier, sealing the bearing components and preventing external contaminants from entering. Contamination can cause abrasion, corrosion, and accelerated wear, leading to reduced performance and shortened bearing life. Proper lubrication minimizes the risk of contamination and maintains the integrity of the bearing's internal components.

  • Improves Corrosion Resistance:
  • Cross roller bearings are often exposed to various environmental conditions that can lead to corrosion. The right lubricant creates a protective layer on the bearing surfaces, acting as a barrier against moisture and corrosive agents. This helps to prevent corrosion and maintain the structural integrity of the bearing, ensuring its long-term performance and longevity.

  • Enhances Load Distribution:
  • Proper lubrication optimizes the load distribution within the cross roller bearing. The lubricant helps to separate the rolling elements and distribute the applied load evenly across the raceways. This ensures that the bearing can effectively handle radial, axial, and moment loads without excessive stress concentration on specific areas. Improved load distribution minimizes the risk of premature wear, fatigue, and failure under heavy loads.

  • Preserves Precision and Accuracy:
  • Cross roller bearings are often used in applications that require high precision and accuracy. Proper lubrication helps maintain the bearing's precision by reducing friction and minimizing variations in motion. It ensures smooth and consistent operation, allowing the bearing to deliver accurate positioning and motion control. Lubrication also helps to dampen vibration and noise, contributing to improved performance in precision applications.

  • Extends Service Life:
  • By reducing friction, minimizing wear, preventing contamination, and enhancing load distribution, proper lubrication significantly extends the service life of cross roller bearings. The lubricant acts as a protective agent, preserving the integrity of the bearing components and reducing the risk of premature failure. With regular lubrication maintenance, the bearing can achieve its expected operational lifespan, providing reliable performance over an extended period.

In summary, proper lubrication is essential for maximizing the performance and longevity of cross roller bearings. It reduces friction and wear, minimizes heat generation, prevents contamination and corrosion, enhances load distribution, preserves precision and accuracy, and extends the service life of the bearings. Regular lubrication maintenance, using the appropriate lubricant in the correct quantity, is crucial for ensuring optimal performance and reliability of cross roller bearings in various industrial applications.

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editor by CX 2024-05-15