High Speed Spindle Bearings B7002-C-2RSD-T-P4S-UL

Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of high speed spindle bearings b7002-c-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.

High Speed Spindle Bearings-7002CTRV1VDBELP4

Also know as H7002C-2RZDBP4, B7002-C-2RSD-T-P4S-DB, KH6002CTAP4

Inside Ø (mm):	15
Outside Ø (mm):	32
Width (mm):	9
Contact Angle:	15°
Rows Of Balls:	Single Row
Seal:	NBR
Ring Material:	GCr15, 100Cr6, SUJ2, X30
Rolling Element Material:	Steel
Cage Material:	Phenolic Resin
Tolerance Class:	P4S
Lubrication:	Greased with Lubcon L252
Type of lubrication:	Grease
Product weight:	0.028 kg

Bearing suffix

C: 15° contact angle, optimized for high-speed operation, low friction and low temperature rise, balancing rotational speed and axial load capacity.

TR: Special high-speed phenolic resin cage, low noise, low wear, high-temperature resistance, effectively avoiding cage jitter under ultra-high-speed rotation.

V1V: Non-cotacted rubber seals

DB: Back-to-back paired mounting structure, providing excellent moment rigidity and anti-deflection capability, resisting spindle radial runout and overturning torque.

E: Enhanced internal structural optimization, improved dynamic load rating and anti-fatigue performance, extending service life under cyclic load.

L: Light preload factory preset, eliminating internal clearance, realizing high-precision rotation without excessive temperature rise at high speed.

P4: ISO P4 ultra-high precision grade, ultra-low radial and axial runout, meeting high-precision finishing spindle tolerance standards.

This bearing is designed for high-speed, high-precision, low-vibration, long-cycle continuous operation environments, suitable for standardized industrial precision processing conditions:

Speed environment: Long-term ultra-high-speed continuous rotating working conditions, suitable for high-frequency start-stop and dynamic speed regulation scenarios.

Load environment: Mainly light and medium composite radial and axial loads, suitable for finishing and micro-cutting working conditions, not suitable for heavy impact load and heavy roughing scenarios.

Lubrication environment: Adapt to oil mist and oil-air precision lubrication, with low lubrication loss and stable oil film forming ability.

Environmental requirements: Clean processing environment with low dust and low impurity, suitable for sealed spindle units to avoid raceway contamination and precision damage.

Temperature environment: Stable temperature rise control, adaptable to long-term high-speed operating temperature range, no thermal drift failure.

The high speed 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.

• Seals: non-contact rubber seals on both sides
• Balls: G5 steel ball
• Rings: OVAKO Sweden steel
• Cages: phenolic resin or polyamide
• Grease: Lubcon or Klueber

∗ 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

1. 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.

Core Capabilities & Intelligent Manufacturing

• Product Size: Inner diameter Φ3–Φ300mm
• Precision Classes: P2, P4 (ultra-precision grades)
• Annual Capacity: 3 million sets of precision bearings in a lean & intelligent factory
• Equipment Investment: Over RMB 3 million in world-leading precision testing instruments
• Digital Transformation: with full deployment of MESYS bearing design platform, ERP, MES, WMS, SPC real-time quality monitoring and OA systems, building a benchmark smart manufacturing plant.

2. Huzhou Factory

In 2021, the deep groove ball bearing factory relocated from Hangzhou to Huzhou. It operate in a 10,000㎡ production facility with a team of 75 employees, focused on the R&D, and manufacturing of high-performance deep groove ball bearings.

We maintain a professional engineering and quality system to ensure stable precision and reliability.

Engineering Team: 4 bearing design & process engineers, accounting for 5% of staff.

Quality Team: 15 quality personnel, including 2 quality engineers, 20% of staff, covering incoming inspection, in-process control and final testing.

In the field of precision spindle bearings, there are two mainstream supply forms: factory pre-matched paired bearings (DB/DT/QBC finished pairing) and SU universal single bearings (spindle factory self-pairing). The different supply modes are determined by bearing precision tolerance consistency, preload stability, structural characteristics and application working conditions, with essential differences in design logic and applicable scenarios.

1. Factory-matched bearings refer to two or multiple bearings screened, measured and paired by the bearing manufacturer in strict accordance with precision tolerance, ring deformation consistency and preload standard, delivered as a complete paired assembly set (such as the DBEL preloaded pairing of 7002CTRV1VDBELP4).

Ultra-high precision tolerance consistency requirements: P4/P4S ultra-precision bearings have extremely strict limits on inner/outer ring runout, raceway roundness and steel ball tolerance. Professional factory precision screening can ensure the micrometer-level consistency of paired bearings, which cannot be achieved by manual random pairing of spindle manufacturers. Mismatched tolerance will directly cause spindle runout and precision attenuation.

Fixed preset preload design: Most factory paired bearings are preset with fixed light/medium/heavy preload (such as L preload in this model). The manufacturer controls the spacer thickness and internal clearance difference through professional calibration, realizing zero-clearance and uniform stress assembly. Random pairing will lead to uneven preload, resulting in high-speed overheating, vibration or insufficient rigidity.

Stable moment rigidity for thin-wall bearings: Thin-wall series bearings (7000 series) have sensitive structural deformation. Factory unified pairing calibration eliminates assembly deflection errors, ensures stable back-to-back (DB) moment rigidity, and avoids deformation difference caused by inconsistent single bearing parameters.

Suitable for standardized high-speed & high-precision fixed working conditions: Factory paired bearings have stable batch consistency, unified temperature rise and vibration performance, and are suitable for mass-produced standard spindles with fixed speed and load parameters.

2. SU type is universal unpaired single bearing with unified tolerance marking. All single bearings of the same model and grade have highly consistent parameters, allowing spindle manufacturers to arbitrarily combine DB/DT/QBC pairing according to spindle structure, assembly spacing and personalized working condition requirements.

Core reasons for adopting SU self-pairing mode:

Customized preload and personalized assembly requirements: For non-standard customized spindles, special stroke structures or variable load working conditions, spindle manufacturers need to independently adjust preload by matching gaskets and spacing sizes. Fixed factory preload cannot adapt to personalized structural differences, while SU single bearings support flexible on-site pairing and preload fine-tuning.

Adapt to special spindle structural design: Some long-axis spindles, multi-bearing combined spindles and special spacing structural spindles cannot use fixed factory paired assemblies. SU universal bearings support arbitrary series/parallel combination, with stronger structural compatibility.

Cost-effective for small-batch and diversified production: SU single bearings are versatile and interchangeable, suitable for small-batch, multi-model customized spindle production. It avoids the inventory pressure caused by fixed paired models and improves part utilization rate.

On-site compensation for assembly errors: Professional spindle manufacturers can perform secondary fine matching according to shaft and housing tolerance, compensating mechanical assembly errors, which is more flexible than fixed factory pairing for complex non-standard equipment.