Spindle Bearings HCB7008C-2RSD-T-P4S-UL

Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of spindle bearings hcb7008c-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.

 

Hybrid Spindle Bearings-HCB7008-C-2RSD-T-P4S-UL

Exchange: H7008C-2RZ-HQ1-P4S, 7008CSN24TRV1VP4(NSK), S7008CDHC/P4A (SKF)

 

 

Inner Ø (mm):	40
Outer Ø (mm):	68
Width (mm):	15
Contact Angle:	15°
Seal:	NBR
Race Material:	GCr15, 100Cr6, SUJ2
Ball Material:	Ceramics
Cage Material:	Phenolic Resin
Tolerance:	P4S
Oil:	Greased with L252
Weight:	0.1680 kg

 

 

 

Category	Item	Description
Material	Rings	Crafted from premium grades such as SKF3, 803A (OVAKO), Cronidur 30, and 9Cr18Mo.
	Rolling Elements	Utilize high-performance Silicon Nitride (Si3N4) ceramic balls.
	Cages	Available in phenolic resin, PEEK, or advanced engineering plastics.
	Lubrication	Pre-lubricated with high-quality greases from Lubcon or Klueber.
	Seals	Options include NBR and FKM/Viton for robust protection.
Features	Lightweight Construction	Ceramic balls weigh approximately 60% less than their steel counterparts, significantly minimizing centrifugal forces during high-speed operation.
	Exceptional Hardness & Durability	Surpassing bearing steel in hardness, these components offer superior resistance to abrasion and fatigue, ensuring an extended operational lifespan.
	Thermal Stability	Featuring a low coefficient of thermal expansion, they experience minimal deformation under high-speed conditions, thereby maintaining consistent preload.
	Electrical Insulation	The non-conductive nature of ceramic effectively prevents electrical erosion caused by stray currents, protecting the raceways from pitting damage.
	Ultra-High Speed Capability	Capable of achieving significantly higher DN values than all-steel spindle bearings, making them ideal for ultra-high-speed applications.
	Reduced Friction & Heat	The smooth surface of the ceramic balls lowers rolling friction and heat generation, which enhances the precision retention of the spindle.
	Corrosion Resistance	These bearings demonstrate greater resilience against moisture, weak acids, and oil degradation compared to traditional all-steel bearings.

 

 

 

Product Overview: Hybrid Spindle Bearing HCB7008C-2RSD-T-P4S-UL
Designed specifically for ultra-precision, high-RPM machine tool spindles, this hybrid ceramic bearing ensures superior stability and longevity in demanding environments.

Primary Applications:

Advanced Machining Systems: Ideal for CNC machining centers, rapid milling units, internal/external grinding machines, and high-speed engraving equipment.

Automated Rotary Solutions: Suitable for high-speed automation systems requiring precise rotational movement.

Electronics Manufacturing: Optimized for PCB routing and drilling spindles used in printed circuit board fabrication.

Metrology & Laboratory Equipment: Perfect for high-speed rotary test fixtures and precision optical inspection systems where accuracy is critical.

Specialized Industrial Sectors: Widely used in high-speed dental handpieces, turbo machinery, aerospace precision components, and high-performance motor spindles.

 

HXB Corporate Profile & Capabilities

Since its inception in May 1995, HXB has established itself as a premier ball bearing manufacturer in China, delivering a diverse portfolio of over 1,000 bearing variants to meet evolving customer demands. Backed by a highly skilled production and engineering workforce, the company maintains rigorous quality standards to ensure consistent product excellence across all manufacturing operations.

Over two decades of continuous innovation, HXB has cultivated a robust product lineup centered on deep groove ball bearings, angular contact ball bearings, and high-precision spindle bearings. These components serve a wide array of industries, including electric motors, machine tool spindles, CNC systems, and new energy vehicles, among others.

Production Capacity & Applications

- Deep Groove Ball Bearings: 37 dedicated production lines with an annual output of 30 million units.
- Angular Contact Ball Bearings: 16 specialized production lines with an annual output of 3.5 million units.
- Key Application Sectors: EMQ-Electric motors, water pumps, household appliances, machine tool spindles, CNC machine, healthcare devices, and intelligent manufacturing systems.

 

HXB supports OEM/ODM customization based on customer drawings and requirements, providing high-quality products at competitive prices. Adhering to craftsmanship and innovation, HXB exports to more than 30 countries and regions including the United States, Germany, Canada, Japan and South Korea.

HXB is committed to becoming a world-class bearing solution provider, creating long-term value and win-win cooperation for global partners.

 

 

 

∗ 2 factories - Hangzhou Factory(YJB) and Huzhou fantory

∗ MES and SPC management systems for the production line

 

 

∗ IATF16949:2016, ISO9001:2015 and ISO14001 managment

 

 

 

 

 

 

 

HXB offer factory-set according to customer requirements.adjusted bearing pairs in universal matchingSU, DU, combined matching DB, DT, DF, triple combination TFT, TBT, quadruple combination QBC, QBT, five combination PBC, etc

 

Back-to-back arrangement (DB):

The contact lines form an O. The back-to-back arrangement is distinguished by a broad support base and high rigidity against tilting moments. The axial force is absorbed in both directions.

 

Face-to-face arrangement (DF):

The pressure lines form an X. This bearing arrangement is less sensitive to misalignment than the back- to- back arrangement, but does however, have less tilting rigidity. The axial force is absorbed in both directions.

 

Tandem arrangement (DT):

In this bearing arrangement, the contact lines are arranged in parallel. The axial load capacity is twice that of a single bearing, but only in one direction. That is why this bearing pair must be adjusted against another bearing or bearing pair.

 

Universal design (U):

Universal bearings can be paired in any arrange-ment listed above. It must be noted here that the bearings require the same preload.

 

 

 

High precision bearing tolerance confirm to DIN620. Bearing size and precision definition confirm to DIN ISO1132. Ensuring bearings performance perfectly and confirming the high precision process, HXB produce small tolerance high precision bearing whatever size, shape and speed.

Precision class：

*High precision spindle bearing confirm to P4.

*High precision cylindrical roller bearing and Bidirectional thrust angular contact ball bearings confirm to SP.

Besides, HXB is able to produce high precision cylindrical roller bearing and bidirectional thrust angular contact ball bearings confirming to P2.

Bore diameter d (mm)		Devision of d Δdmp in μm
		P5		P4		P2
over	include	from	to	from	to	from	to
0.6	2.5	0	-5	0	-4	0	-2.5
2.5	10	0	-5	0	-4	0	-2.5
10	18	0	-5	0	-4	0	-2.5
18	30	0	-6	0	-5	0	-2.5
30	50	0	-8	0	-6	0	-2.5
50	80	0	-9	0	-6	0	-4
80	120	0	-10	0	-8	0	-5
120	180	0	-13	0	-10	0	-7
180	250	0	-15	0	-12	0	-8

 

Outer diameter D (mm)		Devision of D ΔDmp in μm
		P5		P4		P2
over	include	from	to	from	to	from	to
2.5	6	0	-5	0	-4	0	-2.5
6	18	0	-5	0	-4	0	-2.5
18	30	0	-6	0	-5	0	-4
30	50	0	-7	0	-6	0	-4
50	80	0	-9	0	-7	0	-4
80	120	0	-10	0	-8	0	-5
120	150	0	-11	0	-9	0	-5
150	180	0	-13	0	-10	0	-7
180	250	0	-15	0	-11	0	-8

 

 

 

 

 

 

 

Type	Dimensions					Abutment dimension				Load rating		Speed value		Weight
	mm					mm				N		1/min		(kg)
	d	D	B	r (min)	r1 (min)	Da	da	ra (max)	ra1 (max)	Cr	Cor	Oil	Grease
H71908C-2RZ HQ1	40	62	12	0.6	0.3	56.7	45.3	0.6	0.15	6850	3200	42000	31000	0.109
H71908AC-2RZ HQ1		62	12	0.6	0.3	56.7	45.3	0.6	0.15	6550	3050	38000	28500	0.109
H7008C-2RZ HQ1		68	15	1	0.6	62.6	47.5	1	0.3	10900	4850	39000	29000	0.185
H7008AC-2RZ HQ1		68	15	1	0.6	62.6	47.5	1	0.3	10500	4650	36000	27000	0.185