Spindle bearings

Spindle bearings are critical components in machine tools, industrial robots, and high-speed rotating equipment, primarily used to support and guide spindle rotation. Common types include angular contact ball bearings, cylindrical roller bearings, and hybrid ceramic bearings, which offer high precision, high rigidity, and low friction. They meet the demands of high speed, heavy load, and superior stability, playing a crucial role in precision machining, aerospace, and automation industries.

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Характеристики

Standard: GB,ASTM/AISI,ГОСТ,BS,JIS,NF,DIN / VDEh,DIN / VDEh
Inner ring diameter: 10mm-280mm
Outer ring diameter: 20mm-400mm
Weight: 0.2kg-300kg
Material: GCr15, 52100, 100Cr6, SUJ2, Stainless Steel, German High Nitrogen Stainless Steel CRONIDUR30, Ceramic
Brand: QIBR/OEM/Neutral
Package: QIBR/Standard Industrial Package/OEM,Machine tool spindle, centrifuge, booster pump, oil pump, blower, various gearboxes, laboratory equipment
Pairing Method: DB, DF, DT, DBD, DBB, SU

Подбор моделей QIBR

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Подбор моделей QIBR
№	Модель продукта	Weight	Inner diameter	Outer diameter	Total width	Basic dynamic load rating	Basic static load rating
1	7000A/P4Y	0.019 kg	10 mm	26 mm	8 mm	5 kN	2.34 kN
2	7000A5DB	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
3	7000A5DF	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
4	7000A5DFM	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
5	7000A5SN24/P4Y	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
6	7000A5SN24DT	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
7	7000A5SN24TRDBMP4	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
8	7000A5SN24TYNDBLP4	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
9	7000A5SN24TYNDBMP4	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
10	7000A5SN24TYNDFHP4	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
11	7000A5SN24TYNDFMP4	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
12	7000A5SN24TYNDTHP4	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
13	7000A5SN24TYNDTMP4	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
14	7000A5TR/P4Y	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
15	7000A5TRDB	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
16	7000A5TYNDBLP4	0.019 kg	10 mm	26 mm	8 mm	5.15 kN	2.41 kN
17	7000ACD/HCP2	0.017 kg	10 mm	26 mm	8 mm	3.97 kN	1.6 kN
18	7000ACD/HCP4A	0.017 kg	10 mm	26 mm	8 mm	3.97 kN	1.6 kN
19	7000ACD/HCP4ADF	0.017 kg	10 mm	26 mm	8 mm	3.97 kN	1.6 kN
20	7000ACD/P2HDB	0.019 kg	10 mm	26 mm	8 mm	3.97 kN	1.6 kN
21	7000ACE/GBP2L	0.019 kg	10 mm	26 mm	8 mm	2.86 kN	1.14 kN
22	7000ACE/HCP4ADB	0.017 kg	10 mm	26 mm	8 mm	2.86 kN	1.14 kN
23	7000ACE/HCP4ADF	0.017 kg	10 mm	26 mm	8 mm	2.86 kN	1.14 kN
24	7000ACE/HCP4ADT	0.017 kg	10 mm	26 mm	8 mm	2.86 kN	1.14 kN
25	7000ACE/P2HU	0.019 kg	10 mm	26 mm	8 mm	2.86 kN	1.14 kN

QIBR precision angular contact ball bearings offer solutions to enhance bearing rigidity, reduce noise and vibration, improve high-speed performance, and extend service life

QIBR precision angular contact ball bearings achieve significantly improved rigidity by using a larger number of large ceramic balls and a design with a larger groove curvature radius coefficient, which greatly increases the bearing's preload.
Noise and Vibration Reduction: To reduce bearing noise and vibration, the bearing raceway waviness and surface roughness are optimized, and a lightweight cage with optimized guided clearance is used.
Reliability and Longevity: The bearings are made from high-purity bearing steel, and the reliability and longevity are enhanced through austenite grain and carbide size refinement during the bearing blank processing. This greatly improves the contact fatigue life of the bearing. The surfaces of the inner and outer raceways undergo vacuum ion nitriding treatment, significantly enhancing the bearing's wear resistance.
High-Speed Performance: For high-speed applications, such as the QIBR QHCG... series bearings, a super high-speed design is used, with a speed factor DmN value of up to 3 million (oil-air lubrication) and 2 million (grease lubrication).

QIBR Precision Angular Contact Ball Bearings

High-speed precision angular contact ball bearings are available in various precision grades: standard precision is ISO Class 4 (ABEC 7), P4A (dimensional accuracy of ISO Class 4 with rotational accuracy higher than ISO Class 4), and ISO Class 2 (ABEC 9)

QIBR Precision Angular Contact Ball Bearings Preload Methods and Characteristics

Angular contact ball bearing axial preload can be categorized into two types based on the method of applying preload: positional preload and constant pressure preload.

Positional Preload: Positional preload refers to a method where the axial position of the bearing remains relatively unchanged during use. The required preload can be achieved by adjusting the width of the spacer between two bearings. Another approach involves grinding a certain amount of pre-deformation on the end faces of the inner or outer rings of a matched pair of bearings, achieving preload upon installation. Positional preload significantly enhances the rigidity of the bearing support system.
Constant Pressure Preload: Also known as constant force preload, this method ensures that the axial preload of the bearing remains constant during operation. The preload is achieved by adjusting the compression of a spring. Compared to positional preload, constant pressure preload is less effective at improving the axial rigidity of the support system under the same preload. However, with positional preload, the thermal expansion of the shaft and changes in radial clearance caused by temperature differences between the inner and outer rings can affect the amount of preload deformation, while constant pressure preload does not have these issues. Generally, positional preload is preferred when high rigidity is required, whereas constant pressure preload is more suitable for high-speed applications.

Подбор моделей QIBR

QIBR precision angular contact ball bearings offer solutions to enhance bearing rigidity, reduce noise and vibration, improve high-speed performance, and extend service life

QIBR precision angular contact ball bearings achieve significantly improved rigidity by using a larger number of large ceramic balls and a design with a larger groove curvature radius coefficient, which greatly increases the bearing's preload.
Noise and Vibration Reduction: To reduce bearing noise and vibration, the bearing raceway waviness and surface roughness are optimized, and a lightweight cage with optimized guided clearance is used.
Reliability and Longevity: The bearings are made from high-purity bearing steel, and the reliability and longevity are enhanced through austenite grain and carbide size refinement during the bearing blank processing. This greatly improves the contact fatigue life of the bearing. The surfaces of the inner and outer raceways undergo vacuum ion nitriding treatment, significantly enhancing the bearing's wear resistance.
High-Speed Performance: For high-speed applications, such as the QIBR QHCG... series bearings, a super high-speed design is used, with a speed factor DmN value of up to 3 million (oil-air lubrication) and 2 million (grease lubrication).

QIBR Precision Angular Contact Ball Bearings

QIBR Precision Angular Contact Ball Bearings Preload Methods and Characteristics

Angular contact ball bearing axial preload can be categorized into two types based on the method of applying preload: positional preload and constant pressure preload.

Positional Preload: Positional preload refers to a method where the axial position of the bearing remains relatively unchanged during use. The required preload can be achieved by adjusting the width of the spacer between two bearings. Another approach involves grinding a certain amount of pre-deformation on the end faces of the inner or outer rings of a matched pair of bearings, achieving preload upon installation. Positional preload significantly enhances the rigidity of the bearing support system.
Constant Pressure Preload: Also known as constant force preload, this method ensures that the axial preload of the bearing remains constant during operation. The preload is achieved by adjusting the compression of a spring. Compared to positional preload, constant pressure preload is less effective at improving the axial rigidity of the support system under the same preload. However, with positional preload, the thermal expansion of the shaft and changes in radial clearance caused by temperature differences between the inner and outer rings can affect the amount of preload deformation, while constant pressure preload does not have these issues. Generally, positional preload is preferred when high rigidity is required, whereas constant pressure preload is more suitable for high-speed applications.

Spindle bearings

Характеристики

Подбор моделей QIBR

QIBR precision angular contact ball bearings offer solutions to enhance bearing rigidity, reduce noise and vibration, improve high-speed performance, and extend service life

QIBR Precision Angular Contact Ball Bearings

QIBR Precision Angular Contact Ball Bearings Preload Methods and Characteristics

Подбор моделей QIBR

Подбор моделей QIBR

QIBR precision angular contact ball bearings offer solutions to enhance bearing rigidity, reduce noise and vibration, improve high-speed performance, and extend service life

QIBR Precision Angular Contact Ball Bearings

QIBR Precision Angular Contact Ball Bearings Preload Methods and Characteristics

QIBR Precision Angular Contact Ball Bearing Pairing