7028 ACDGB/P4A

7028 ACDGB/P4A

These super-precision, high-capacity, single row angular contact ball bearings accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. They are designed to accommodate heavy loads at relatively high speeds under low to moderate operating temperatures. Being universally matchable, they can be used together in arrangements to provide effective load sharing, within a predetermined preload range, without the use of shims or similar devices.Very high running accuracyVery high load carrying capacityRelatively high speed and stiffnessUniversally matchable
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Dimensions - 7028 ACDGB/P4A

d

140 mm

D

210 mm

B

33 mm

d1

161.6 mm

d2

161.6 mm

D1

188.4 mm

r1,2

min.2 mm

r3,4

min.1 mm

a

57.5 mm

Abutment dimensions - 7028 ACDGB/P4AAbutment dimensions - 7028 ACDGB/P4A

da

min.149 mm

db

min.149 mm

Da

max.201 mm

Db

max.205 mm

ra

max.2 mm

rb

max.1 mm

dn

166.3 mm

C

146 kN

C0

156 kN

Pu

5.1 kN

 

25 degree

Dw

22.225 mm

i

1

z

22

G

45 cm³

Preload and stiffness (back-to-back, face-to-face)
 

B

 

477 N/µm

f

1.16

f1

0.99

f2B

1.02

f

1

e

0.68

Y1

0

Y2

0.87

Y0

0.38

X1

1

X2

0.41

X0

0.5

Axial load factor (back-to-back, face-to-face) Y1

0.92

Axial load factor (back-to-back, face-to-face) Y2

1.41

Axial load factor (back-to-back, face-to-face) Y0

0.76

Radial load factor (back-to-back, face-to-face) X1

1

Radial load factor (back-to-back, face-to-face) X2

0.67

Radial load factor (back-to-back, face-to-face) X0

1

 

Precision contact bearings are engineered with exceptional accuracy to ensure optimal performance in various mechanical applications. These bearings feature tight dimensional tolerances and precise geometric shapes, which contribute to their high rotational accuracy and low noise levels. The materials used in their construction, often high-quality steels or ceramics, are chosen for their durability and resistance to wear, ensuring long service life even under demanding conditions. Precision contact bearings typically include configurations such as ball bearings, roller bearings, and needle bearings, each designed to address specific load and speed requirements. Their design also incorporates advanced lubrication systems to reduce friction and heat generation, thereby enhancing efficiency and reliability.

The primary advantage of precision contact bearings lies in their ability to sustain high precision under various operating conditions. They offer superior load-carrying capacity, making them ideal for applications requiring heavy loads while maintaining high speeds. The precision of these bearings minimizes vibration and noise, which is critical in sensitive environments such as medical equipment or precision instruments. Additionally, their robust construction ensures reliability and longevity, reducing maintenance costs and downtime. The use of advanced materials and lubrication techniques further enhances their performance, providing resistance to corrosion and wear. This combination of features makes precision contact bearings an indispensable component in precision engineering and high-performance machinery.

Precision contact bearings are widely applied in a variety of industries due to their exceptional performance characteristics. In the automotive sector, they are crucial for the smooth operation of engines, transmissions, and suspension systems, ensuring reliability and fuel efficiency. Aerospace applications utilize these bearings for their ability to withstand extreme conditions and high speeds, contributing to the safety and efficiency of aircraft. Industrial machinery, such as CNC machines and robotics, benefit from the high precision and durability of these bearings, enabling consistent and accurate operations. Medical devices, which demand minimal noise and vibration, also rely on precision contact bearings to ensure patient comfort and device effectiveness. Overall, the versatility and reliability of precision contact bearings make them essential in numerous high-precision and high-performance applications across different sectors.

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71930 ACD/P4ADBC 150 210 56
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71930 ACD/P4A 150 210 28
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It-tags Popolari: 7028 acdgb/p4a, 7028 acdgb/p4a suppliers

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