BNR 19&BER 19

Характеристики

Standard: GB,ASTM/AISI,ГОСТ,BS,JIS,NF,DIN / VDEh,DIN / VDEh
Range of Inner Ring Dia.: 25-50mm
Range of Outer Ring Dia.: 42mm-72mm
Range of Weight: 0.038kg-0.125kg
Material: SKF3, ZGCr15, Stainless Steel, Heat-resistant Steel, Ceramic
Brand: QIBR/OEM/Neutral
Package: QIBR/Standard Industrial Package/OEM
Applications: Turbines, Pumps, Raiway Vehicles, Machine Tool Spindles, Motor Plants, Medical Equipment.
Pairing Method: DB, DF, DT, DBD, DBB, SU

Подбор моделей QIBR

Показано 1 - 25 из 36: Продукты

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Подбор моделей QIBR
№	Модель продукта	Basic dynamic load rating	Basic static load rating	Inner diameter	Weight	Outer diameter	Total width
1	25BER19H	5.70 kN	3.40 kN	25 mm	0.038 kg	42 mm	9 mm
2	25BER19S	5.70 kN	3.40 kN	25 mm	0.042 kg	42 mm	9 mm
3	25BER19X	5.70 kN	3.40 kN	25 mm	0.038 kg	42 mm	9 mm
4	25BNR19H	5.95 kN	3.50 kN	25 mm	0.038 kg	42 mm	9 mm
5	25BNR19S	5.95 kN	3.50 kN	25 mm	0.042 kg	42 mm	9 mm
6	25BNR19X	5.95 kN	3.50 kN	25 mm	0.038 kg	42 mm	9 mm
7	30BER19H	6.00 KN	3.90 KN	30 mm	0.043 kg	47 mm	9 mm
8	30BER19S	6.00 KN	3.90 KN	30 mm	0.048 kg	47 mm	9 mm
9	30BER19X	6.00 KN	3.90 KN	30 mm	0.043 kg	47 mm	9 mm
10	30BNR19H	6.30 KN	4.05 KN	30 mm	0.043 kg	47 mm	9 mm
11	30BNR19S	6.30 KN	4.05 KN	30 mm	0.048 kg	47 mm	9 mm
12	30BNR19X	6.30 KN	4.05 KN	30 mm	0.043 kg	47 mm	9 mm
13	35BER19H	8.08 KN	5.75 KN	35 mm	0.063 kg	55 mm	10 mm
14	35BER19S	8.08 KN	5.75 KN	35 mm	0.072 kg	55 mm	10 mm
15	35BER19X	8.08 KN	5.75 KN	35 mm	0.063 kg	55 mm	10 mm
16	35BNR19H	9.20 KN	6.00 KN	35 mm	0.063 kg	55 mm	10 mm
17	35BNR19S	9.20 KN	6.00 KN	35 mm	0.072 kg	55 mm	10 mm
18	35BNR19X	9.20 KN	6.00 KN	35 mm	0.063 kg	55 mm	10 mm
19	40BER19H	11.00 KN	7.35 KN	40 mm	0.092 kg	62 mm	12 mm
20	40BER19S	11.00 KN	7.35 KN	40 mm	0.105 kg	62 mm	12 mm
21	40BER19X	11.00 KN	7.35 KN	40 mm	0.092 kg	62 mm	12 mm
22	40BNR19H	11.50 KN	7.65 KN	40 mm	0.092 kg	62 mm	12 mm
23	40BNR19S	11.50 KN	7.65 KN	40 mm	0.105 kg	62 mm	12 mm
24	40BNR19X	11.50 KN	7.65 KN	40 mm	0.092 kg	62 mm	12 mm
25	45BER19H	11.60 KN	8.35 KN	45 mm	0.111 kg	68 mm	12 mm

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

Показано 1 - 25 из 36: Продукты

Строк на странице

Подбор моделей QIBR
№	Модель продукта	Basic dynamic load rating	Basic static load rating	Inner diameter	Weight	Outer diameter	Total width
1	25BER19H	5.70 kN	3.40 kN	25 mm	0.038 kg	42 mm	9 mm
2	25BER19S	5.70 kN	3.40 kN	25 mm	0.042 kg	42 mm	9 mm
3	25BER19X	5.70 kN	3.40 kN	25 mm	0.038 kg	42 mm	9 mm
4	25BNR19H	5.95 kN	3.50 kN	25 mm	0.038 kg	42 mm	9 mm
5	25BNR19S	5.95 kN	3.50 kN	25 mm	0.042 kg	42 mm	9 mm
6	25BNR19X	5.95 kN	3.50 kN	25 mm	0.038 kg	42 mm	9 mm
7	30BER19H	6.00 KN	3.90 KN	30 mm	0.043 kg	47 mm	9 mm
8	30BER19S	6.00 KN	3.90 KN	30 mm	0.048 kg	47 mm	9 mm
9	30BER19X	6.00 KN	3.90 KN	30 mm	0.043 kg	47 mm	9 mm
10	30BNR19H	6.30 KN	4.05 KN	30 mm	0.043 kg	47 mm	9 mm
11	30BNR19S	6.30 KN	4.05 KN	30 mm	0.048 kg	47 mm	9 mm
12	30BNR19X	6.30 KN	4.05 KN	30 mm	0.043 kg	47 mm	9 mm
13	35BER19H	8.08 KN	5.75 KN	35 mm	0.063 kg	55 mm	10 mm
14	35BER19S	8.08 KN	5.75 KN	35 mm	0.072 kg	55 mm	10 mm
15	35BER19X	8.08 KN	5.75 KN	35 mm	0.063 kg	55 mm	10 mm
16	35BNR19H	9.20 KN	6.00 KN	35 mm	0.063 kg	55 mm	10 mm
17	35BNR19S	9.20 KN	6.00 KN	35 mm	0.072 kg	55 mm	10 mm
18	35BNR19X	9.20 KN	6.00 KN	35 mm	0.063 kg	55 mm	10 mm
19	40BER19H	11.00 KN	7.35 KN	40 mm	0.092 kg	62 mm	12 mm
20	40BER19S	11.00 KN	7.35 KN	40 mm	0.105 kg	62 mm	12 mm
21	40BER19X	11.00 KN	7.35 KN	40 mm	0.092 kg	62 mm	12 mm
22	40BNR19H	11.50 KN	7.65 KN	40 mm	0.092 kg	62 mm	12 mm
23	40BNR19S	11.50 KN	7.65 KN	40 mm	0.105 kg	62 mm	12 mm
24	40BNR19X	11.50 KN	7.65 KN	40 mm	0.092 kg	62 mm	12 mm
25	45BER19H	11.60 KN	8.35 KN	45 mm	0.111 kg	68 mm	12 mm

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.

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