Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of precision angular contact ball bearings b71901-c-t-p4s 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.
Precision Angular Contact Ball Bearings B71901C-T-P4S
B71901-C-T-P4S-UL: Standard paired version with unified preload tolerance, the most common official alternative for single and duplex mounting
XCB71901C.T.P4S.DBL: Enhanced precision paired model, optimized for high-stability reciprocating motion of ball screws
B71901C.2RSD.T.P4S: Sealed version (double rubber seal), suitable for dusty workshop environments, same precision and load parameters
NSK 71901CTYNDBLP4
SKF 71901CD/P4A
Key Replacement Notes & Model Definition Explanations
Core unified parameters for all alternative models: 15° contact angle (C-type), P4 super precision, high-speed phenolic resin cage (consistent with original T-code configuration), d12×D24×B6mm overall dimensions, completely interchangeable in installation and preload matching
Parameter code explanation: C=15° contact angle, T=phenolic resin laminated fabric cage (high-speed dedicated, NOT nylon), P4S=super precision special grade for spindle/ball screw, UL/DBL=precision paired tolerance
Application matching suggestion: For ultra-precision semiconductor, medical and high-end CNC equipment, choose FAG original equivalent or SKF/NSK international models; for standard automation and ordinary CNC equipment, qualified domestic P4 models are fully applicable
Avoid mismatching: Do not replace with P5 grade bearings or 25° contact angle (E-type) bearings, which will cause precision loss and system rigidity reduction
Technical Data
| Weight | Load rating | Speed value | ||||||||||||
| mm | mm | N | r/min | |||||||||||
| d | D | B | r(min) | r1(min) | da | Da | ra(max) | ra1(max) | m | C | C0r | Noil | Ngrease | |
| 12mm | ||||||||||||||
| 71801 C | 12 | 21 | 5 | 0.3 | 0.2 | 14.0 | 19.0 | 0.3 | 0.15 | 0.006 | 1800 | 980 | 105000 | 79000 |
| 71801 AC | 12 | 21 | 5 | 0.3 | 0.2 | 14.0 | 19.0 | 0.3 | 0.15 | 0.006 | 1710 | 930 | 89000 | 67000 |
| 71901 C | 12 | 24 | 6 | 0.3 | 0.3 | 14.5 | 21.5 | 0.3 | 0.1 | 0.011 | 3100 | 1660 | 97000 | 73000 |
| 71901 AC | 12 | 24 | 6 | 0.3 | 0.3 | 14.5 | 21.5 | 0.3 | 0.1 | 0.011 | 2950 | 1580 | 83000 | 62000 |
Features
- Precision angular contact ball bearings is suitable for high radial and axial loads in one direction.
- It has also an axial load carrying capacity on both sides in the X- or O-arrangement in pairs.
- Accuracy grade: P4S (main dimensions at least according to ISO-tolerance class 4).
- All running tolerances are classified according to ISO-tolerance class 2.
- It is designed for a high running accuracy and high speeds with maximum rigidity and operational safety.
- Seal: open design (without seal).
- Exchange: B71901-C-T-P4S, 71901CTA/P4S (CSC), 71901CTRP4 (NSK), 71901CD/P4A.
Applications
Mini High-Speed CNC Engraving & Drilling Spindles
Laboratory Ultra-High-Speed Centrifugal & Testing Instruments
High-End Medical Mini Precision Rotary Components
Semiconductor Micro Processing Modules Dedicated to tiny rotary units of wafer micro-inspection equipment, chip precision sorting and laser trimming devices. The P4 ultra-precision grade ensures zero micro-jitter during high-speed operation, preventing scratch and position errors on ultra-fine semiconductor components, fully adapting to dust-free and high-precision semiconductor production environments.
Precision Optical & Aerial Mini Devices Matched for rotary shafts of miniature telescope focusing mechanisms, UAV micro gimbal stabilizers and small aerospace inertial testing equipment. The lightweight thin-wall design reduces equipment load, while consistent high-precision rotation guarantees stable positioning of optical and aerial precision components.
Micro High-Speed Servo Motors & Precision Actuators Exclusive for miniature high-speed servo motors and tiny precision actuators used in automated precision assembly equipment. It withstands frequent high-speed start-stop and slight composite radial-axial loads, maintaining long-term positioning accuracy and improving the stability of micro automatic transmission systems.
HXB Introduction
Founded in 1995, HXB stands out as a reputable professional ball bearing manufacturer based in China. We have developed a diverse product portfolio covering over 1,000 bearing models to cater to customized and diversified demands from global clients. Backed by proficient production technicians and professional R&D teams, we sustain stable output and deliver premium, high-consistency bearing products at scale.
Mass Production Capacity
Our standardized automated production workshops boast mature manufacturing lines with stable annual output:
- Deep groove ball bearings: 34 dedicated production lines, with an annual output of 30 million pieces
- Precision angular contact ball bearings: 14 professional production lines, with an annual output of 3 million pieces
Main Application Coverage
Our full-range bearing products are widely deployed across multiple high-end and conventional industries, including high-performance motors, fluid pumps, textile machinery, domestic electrical appliances, precision machine tool spindles, CNC machining equipment, medical health facilities and intelligent automated manufacturing systems.
Authoritative Quality Certification
To guarantee standardized manufacturing and reliable product performance, the company has obtained authoritative international system certifications including IATF16949:2016 and ISO9001:2015.
Adhering to exquisite manufacturing standards and technology-driven innovation, HXB focuses on providing tailored, high-performance bearing solutions. We strive to create stable and long-term cooperative value for worldwide business partners.
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
Certificates
Exhibition
FAQ
Q1: What application areas do your products mainly involve?
A: Our application fields mainly include motors, water pumps, household appliances, automobiles, motorcycles, power tools, engraving machines, reducers, machine tools, CNC machining centers, textile machinery, woodworking machinery, etc.
Q2:What's the lead time of delivery?
A: Usually 30 days for normal bearings, even short than 2 weeks. For customized products, 60 days is needed.
Q3: Why is my payment declined?
A: Payments may fail due to insufficient balance, bank fraud protection, expired cards or address mismatches. Please try another payment method or contact your bank for help.
Q4: Can you make customized products?
A: Yes, we can customize products according to customer needs, develop and produce products according to drawings or samples provided by customers. We also have our own brands of HXB and YJB.
Q5: What is your return policy?
A: Within the valid warranty period, if the product fails to meet the stipulated quality standards or cannot work normally due to inherent manufacturing quality problems (excluding human damage and improper use), the product shall be covered by free warranty service.
Q6: What is your minimum order quantity?
A: Small trial orders and sample orders are acceptable. Bulk orders enjoy more favorable wholesale prices
Q7: Can you support mixed batch ordering?
A: Yes, we support mixed loading of different models and specifications to meet diversified procurement needs
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