Super Precision Angular Contact Ball Bearings HCB7016-E-2RSD-T-P4S-UL

Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of super precision angular contact ball bearings hcb7016-e-2rsd-t-p4s-ul 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.

Super Precision Angular Contact Ball Bearings-S7016ACDGAHC/P4A

Exchange: HCB7016E-2RSD-P4S(FAG), H7016AC-2RZ-HQ1-P4S, 7016CSN24TRV1VDTP4(NSK), S7016CDGAHC/P4A (SKF)

The spindle bearing is a specially designed angular contact ball bearing consisting of an inner ring, an outer ring, a cage, a set of rolling elements and optional grease and seals. According to the customer's use and working conditions, we will provide the corresponding parts materials to achieve the best performance of the bearing.

• NON-CONTACT SEALS BOTH SIDES
• THE BALLS ARE MADE OF SILICON NITRIDE (CERAMIC) WHICH PERMIT A SIGNIFICANT INCREASE IN SPEED
• RINGS ARE MADE OF HIGH QUALITY GCR15
• CONTACT ANGLES OF 15° AND 25° PERMIT SIGNIFICANTLY HIGHER AXIAL FORCES AND IMPROVED RIGIDITY
• WINDOW CAGE MADE OF REINFORCED PHENOLIC OR HIGH-PERFORMANCE PLASTIC FOR SPECIAL APPLICATIONS
• HIGH-PERFORMANCE LUBRICANTS ENSURE HIGH SPEEDS AND A LONG LIFETIME

Which material do you want?

GCr15: Standard high-carbon chromium bearing steel, widely used for conventional load and speed applications

OVAKO: Premium Swedish bearing steel with ultra-low impurity content, ideal for high-precision and low-noise bearings

X30: High-chromium stainless steel, excellent corrosion resistance for harsh and moisture-prone environments

9Cr18Mo: Martensitic stainless bearing steel with molybdenum addition, combines corrosion resistance and high hardness

• Hybrid bearing construction: GCr15 steel inner & outer rings matched with silicon nitride (Si₃N₄) ceramic balls
• Lightweight ceramic rolling elements cut centrifugal force sharply at ultra-high RPM
• Lower friction minimizes heat buildup, maintaining stable precision during long-hour nonstop machining
• Extra-hard ceramic surface boosts wear resistance and multiplies bearing service life
• Ultra-low thermal expansion keeps stable preload without precision shift under continuous high-speed running
• Electrically insulating ceramic balls block stray shaft currents to eliminate electrical erosion damage
• Higher DN value adapts the bearing to all kinds of high-speed CNC spindles
• Resist humidity, weak acid fluid and lubricant degradation for harsh working conditions

HCB7016E-2RSD-T-P4S-UL ultra-precision angular contact ball bearings are specially developed to support high-speed, high-precision machine tool spindle systems.

1. PCB processing high-speed equipment High-speed drilling and routing spindles dedicated to printed circuit board manufacturing.

2. Precision testing and optical laboratory devices High-speed rotating test jigs and precision spindles for optical detection instruments.

3. Various high-performance industrial rotary equipment High-speed dental handpiece assemblies, turbo mechanical parts, aerospace precision rotating components and high-speed motor spindles.

4. Core precision machining machinery CNC machining centers, high-speed milling equipment, internal & external grinding machines and high-speed engraving devices.

5. Automated high-speed rotating production lines

∗ 30 years of dedicated development

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

HXB Bearing(Formerly：Hangzhou Huaxing Bearing Co.,Ltd) is located at the east suburb of Hangzhou. 

Established in May 1995, HXB has standardized its management with modern corporate system, passed the certification of Is09001: 2000 Quality Management System and ISO/TSI6949: 2002 Quality Management System, with a group of practical and innovative managerial team in product design, development, structural analysis, performance detection, manufacturing, and marketing, etc. Our product quality has passed the testof China Bearing Industry Association (CBIA), with various indexes reaching advanced level in China.

HXB mainly produces over 200 kinds of bearings, such as high-precision angular contact ball bearing, deep groove ball motor bearing, auto-hub 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.

HXB has emphasized technological innovation, continuously introduced scientific talents, cooperated with experts and scientific research institutes in bearing industry of China, established technology development system with Hangzhou Technology Center as the core, constantly developed products with high added value and high technical contents, implemented technological innovation project, and widely applied computer integrated manufacturing system (CIMS) in new product development, manufacturing, marketing, and corporate management, which has greatly improve the corporate competitiveness.

HXB is confident that only high-quality bearing can enable the machine and products bring their performance into full play. With our permanent principle of "Guaranteeing the quality and technology and providing zealous and perfect service," we always specialize in manufacturing superior quality bearing by advanced equipment, strict quality control, and systematic management.

Hybrid ceramic spindle bearings adopt steel inner/outer rings matched with silicon nitride (Si₃N₄) ceramic balls. They become a mandatory choice for spindles under extreme working conditions, categorized by speed demand, precision standard, thermal stability requirement, anti-electric corrosion need, service life target and special industrial scenarios as below:

1. Ultra-high-speed spindles with RPM over 15,000

Spindles running continuously above 15,000 RPM, especially 20,000–100,000 RPM, must use hybrid ceramic bearings. Silicon nitride balls are 60% lighter than steel balls, which drastically cuts centrifugal force pressing balls against outer raceways. Standard all-steel bearings generate massive friction heat at high RPM, causing grease carbonization, cage deformation and rapid failure. Hybrid ceramic designs lift the maximum allowable speed by 30%–60% while lowering internal friction heat by 35%–60%. Typical equipment: PCB high-speed routing spindles, dental milling spindles, small ultra-high-speed grinding spindles, woodworking high-speed engraving spindles.

2. Ultra-precision spindles requiring micron/nano-level machining accuracy

High-end spindles for precision machining with strict tolerance control (±2 μm or tighter) rely on hybrid ceramic bearings for stable geometric accuracy. Ceramic balls own a far lower thermal expansion coefficient (only 1/3 of bearing steel). During long continuous cutting, they barely expand with temperature rises, maintaining preset bearing preload and eliminating thermal runaway loops of "heat generation → ball expansion → clearance loss → extra friction". The spindle runout stays consistent without dimensional drift of finished workpieces. Typical equipment: 5-axis CNC milling spindles, ultra-precision surface grinding spindles, optical lens grinding spindles, semiconductor wafer processing spindles.

3. Spindles sensitive to heat buildup & limited cooling structure

Spindles with compact housings, weak liquid/grease cooling systems or long non-stop operation face severe thermal deformation risks. Hybrid ceramic bearings reduce heat generation at the source; their low thermal conductivity also slows heat transfer to spindle shafts and housings. Compared with steel bearings, they avoid thermal expansion-induced chatter, surface finish defects and tool wear acceleration. Typical equipment: Built-in motorized electro-spindles, miniature high-speed lab centrifugal spindles, compact mold engraving spindles.

4. VFD-driven motor spindles suffering from shaft current & electric erosion

Spindles equipped with variable frequency drive (VFD) motors produce parasitic shaft voltage and bearing current, triggering EDM electric pitting on steel ball surfaces. Non-conductive silicon nitride ceramic balls cut off electric loops completely, preventing electrical corrosion damage to rolling contact surfaces. This doubles or triples spindle bearing service life under variable-frequency operation. Typical equipment: All inverter-controlled CNC electro-spindles, new energy vehicle motor test spindles, automated production line high-speed grinding spindles.

5. Spindles demanding long service life & low maintenance frequency

For automated mass-production spindles with costly downtime and difficult disassembly maintenance, hybrid ceramic bearings are essential. Harder Si₃N₄ ceramic balls (HRC78–80 vs HRC60–65 steel) deliver superior wear resistance, and the low metal-to-ceramic affinity avoids cold welding between rolling contact surfaces. Their service life reaches 3–6 times that of standard steel spindle bearings under identical load and speed. Typical equipment: Mass-production automotive part machining spindles, continuous-running printed circuit board drilling spindles, aerospace component milling spindles.

6. Spindles operating under marginal or insufficient lubrication

Some compact miniature spindles adopt limited-quantity grease lubrication without centralized oil supply systems. Hybrid ceramic balls feature slight self-lubricating properties and much lower friction coefficients. They can run stably for a long time without complete oil film separation, avoiding instant seizure risks common to all-steel bearings under poor lubrication. Typical equipment: Mini medical dental spindles, portable high-speed carving spindles, small laboratory precision rotating spindles.

7. Special industry high-demand spindle equipment (application summary)

Aerospace & medical spindles: Micro-milling spindles for titanium alloy medical implants, aircraft turbine part finishing spindles; lightweight ceramic balls reduce spindle rotation inertia for faster acceleration/deceleration.

Semiconductor & optical spindles: Wafer polishing spindles, precision lens cutting spindles; ultra-stable rotation ensures zero scratch on delicate electronic & optical workpieces.

Precision grinding spindles: Cylindrical grinding, internal grinding and tool grinding spindles; low vibration improves workpiece surface roughness and extends diamond grinding tool life.

High-speed routing & drilling spindles: PCB, aluminum alloy engraving spindles; sustain stable ultra-high RPM for efficient thin-plate machining without spindle vibration.