Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of ball screw support bearings 7603020tvpdbp4 in China. As we have world-leading production equipment and strong manufacturing capabilities, we warmly welcome you to buy bulk high quality bearings at competitive price from our factory.
Ball Screw Support Bearings-7603020TVPDBP4
Specifications
|
Dimension: |
20x52x15mm |
|
Part No.: |
7603020TNDBP4 |
|
Precision Class: |
P5, P4, ABEC-5, ABEC-7 |
|
Arrangement: |
DB/DT/DF/SU/TFT/TBT/QBC/QBT |
|
Bearing Number |
Boundary Dimensions (mm) |
Load Rating (KN) |
Limiting Speed (rpm) |
Friction Torque |
Weight (kg) |
||||
|
d |
D |
B |
rmin |
Cr |
Cor |
Grease |
N. mm |
||
|
760201-TN |
12 |
32 |
10 |
0.6 |
11.60 |
12.50 |
17000 |
15 |
0.042 |
|
760202-TN |
15 |
35 |
11 |
0.6 |
12.50 |
15.00 |
15000 |
20 |
0.052 |
|
760203-TN |
17 |
40 |
12 |
0.6 |
16.60 |
20.00 |
13000 |
30 |
0.074 |
|
760204-TN |
20 |
47 |
14 |
1.0 |
19.30 |
25.00 |
12000 |
50 |
0.139 |
|
760304-TN |
52 |
15 |
1.1 |
24.50 |
32.00 |
11000 |
60 |
0.170 |
|
|
760205-TN |
25 |
52 |
15 |
1.0 |
22.00 |
30.50 |
11000 |
65 |
0.147 |
|
760305-TN |
62 |
17 |
1.1 |
28.50 |
41.50 |
90000 |
85 |
0.275 |
|
|
760206-TN |
30 |
62 |
16 |
1.0 |
26.00 |
39.00 |
9000 |
85 |
0.232 |
|
760306-TN |
72 |
19 |
1.1 |
34.50 |
55.00 |
8000 |
130 |
0.409 |
|
|
760207-TN |
35 |
72 |
17 |
1.1 |
30.00 |
50.00 |
8000 |
115 |
0.339 |
|
760307-TN |
80 |
21 |
1.5 |
36.50 |
61.00 |
7000 |
170 |
0.546 |
|
|
760208-TN |
40 |
80 |
18 |
1.1 |
37.50 |
64.00 |
7000 |
170 |
0.418 |
|
760308-TN |
90 |
23 |
1.5 |
50.00 |
83.00 |
6300 |
225 |
0.751 |
|
|
760209-TN |
45 |
85 |
19 |
1.1 |
38.00 |
68.00 |
6700 |
190 |
0.488 |
|
760309-TN |
100 |
25 |
1.5 |
58.50 |
104.00 |
5600 |
300 |
0.992 |
|
|
760210-TN |
50 |
90 |
20 |
1.1 |
39.00 |
75.00 |
6300 |
230 |
0.557 |
|
760310-TN |
110 |
27 |
2.0 |
69.50 |
127.00 |
5000 |
360 |
1.290 |
|
Applications
- Reliable for Machine Tool Spindles: Combined with cylindrical roller bearings, it provides the rigid, accurate support CNC lathes and milling machines need for consistent, high-precision results.
- Ball Screw Support Bearing Ideal for Precision Screw Drives: The perfect solution for supporting precision ball screws, enabling smooth high speeds, fast accelerations, and pinpoint axial positioning.
- Built for Heavy-Duty Performance: Engineered to handle the massive downward thrust loads in indexing tables, oilfield rotary tables, and high-speed vertical motors.
HXB Introduction
HXB Bearing (Formerly: Hangzhou Huaxing Bearing Co.,Ltd) is located at Hangzhou.
Established in May 1995, HXB has standardized its management with modern corporate system, passed the certification of ISO9001: 2015 Quality Management System and IATFI6949: 2016 Quality Management System, with a group of practical and innovative managerial team in product design, development, structural analysis, performance detection, manufacturing, and marketing, etc.
HXB mainly produces over 200 kinds of bearings, such as high-precision angular contact ball main shaft bearing, high-precision mute deep groove ball motor bearing, auto-hub bearing, silicone oil fan spindle bearing, special bearing for textile machinery, and high-speed main shaft bearing for woodworking machinery, which are characterized by high precision, low noise, and long service life, and widely applied in high-precision lathe, CNC machining center, Y-series motor, automobile, motorbike, electric tool, home appliances, water pump, generator, textile machinery, and engineering machinery, etc.
Advantages
HXB was founded in 1995, with nearly 30 years of dedicated development, HXB now operates6 subsidiaries.
∗ 2 high-tech R&D centers
∗ 2 modern manufacturing factories - Hangzhou Yijia Precision Bearing Co., Ltd. and Zhejiang Ruiyang Bearing Technology Co., Ltd.
∗ Supported by advanced digital MES and SPC management systems
∗ IATF16949:2016, ISO9001:2015 and ISO14001 certifications
∗ High-end equipment and high-quality material
About HXB
Hangzhou Factory - YJB
Founded in June 2007, YJB is located in Hangzhou. As a subsidiary of HXB Group, we are a national high-tech enterprise and provincial science & technology enterprise specializing in R&D and manufacturing of high-precision, high-speed, advanced, special and professional bearings.
Certificates
Exhibition
FAQ
Q: What is the difference between open and sealed ball screw bearings, and how to choose?
A: Open bearings feature no rubber seals or metal shields on both sides, while sealed versions adopt double-lip contact rubber seals (2RS) or non-contact metal shields (ZZ). The selection depends entirely on working environment, lubrication mode and maintenance requirements.
Open Type Application Scenarios:
Clean indoor environments with dust-proof machine enclosures
High-speed continuous running equipment requiring minimal friction and heat generation
Systems with automatic centralized oil lubrication (open structure allows smooth grease/oil circulation and heat dissipation)
Long-stroke, high-frequency reciprocating precision motion platforms
Sealed Type (2RS/ZZ) Application Scenarios:
Semi-open or harsh workshop environments with dust, metal chips, cutting fluid mist and fine debris
Equipment without fully closed protective covers (milling machines, drilling machines, grinding machines)
Machines requiring long-term maintenance-free operation, avoiding frequent refueling
Low-to-medium speed operation scenarios where slight friction rise is acceptable
Q: Why do ball screw support bearings mostly use nylon cages instead of steel cages?
A: Nylon PA66/PA46 cages are the standard configuration for precision ball screw bearings, with irreplaceable advantages over traditional steel cages for precision transmission scenarios:
Lower noise & smoother operation: Nylon has excellent self-lubricating and elastic buffering properties. It eliminates rigid collision and friction between steel balls and the cage, reducing running noise and torque fluctuation, which ensures stable precision feeding of ball screws.
Superior grease retention: The porous structure of nylon materials locks lubricating grease firmly, avoiding rapid grease loss during high-speed reciprocating motion, realizing long-term maintenance-free operation.
Light weight & low centrifugal force: Lighter than steel cages, it reduces centrifugal load during high-speed rotation, lowers bearing heat generation, and improves high-speed stability.
Anti-seizure & wear-resistant: Nylon has good friction matching with bearing steel. In case of temporary lubrication insufficiency, it can avoid rigid abrasion and bearing seizure, protecting the precision raceway.
Corrosion resistance: Resistant to mild cutting fluid, oil mist and humid workshop environments, no rust failure like steel cages.
Q: How to choose between P4 and P5 precision grades for ball screw bearings?
A: Precision grade determines the bearing's radial runout, axial runout and mounting accuracy, directly affecting the positioning and repetition accuracy of the entire ball screw system. The selection follows the equipment's precision positioning requirements.
P5 Grade (Standard Precision)
Features: Moderate accuracy, cost-effective, stable performance
Applicable scenarios: Ordinary CNC machine tools, automatic cutting machines, packaging machinery, general automation linear modules, conventional handling and positioning equipment
Accuracy requirement match: Equipment positioning accuracy ≥0.02mm/m, non-micron-level ultra-precision processing
P4 Grade (High Precision)
Features: Ultra-low runout, higher dimensional consistency, better rotation stability
Applicable scenarios: High-precision CNC machining centers, engraving machines, grinding machines, semiconductor equipment, precision testing instruments, medical automation equipment
Accuracy requirement match: Micron-level positioning accuracy (≤0.01mm/m), high repetition positioning accuracy, zero-tolerance precision processing scenarios
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