7226 ACD/P4ADGA

7226 ACD/P4ADGA

These matched sets of two super-precision, high-capacity, D design, single row angular contact ball bearings are available in a variety of arrangements. They are designed for high-load capacity and relatively high speed operation and, compared to the equivalent SKF B and E design high-speed bearings, are best suited for heavier loads. Very high running accuracy Very high load carrying capacity
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Product Introduction

Dimensions - 7226 ACD/P4ADGA

Dimensions

d

130 mm

Bore diameter
D

230 mm

Outside diameter
B

80 mm

Width
d1

162.8 mm

Shoulder diameter of inner ring (large side face)
d2

162.8 mm

Shoulder diameter of inner ring (small side face)
D1

199.2 mm

Shoulder diameter of outer ring (large side face)
r1,2

min.3 mm

Chamfer dimension
r3,4

min.1.1 mm

Chamfer dimension

Abutment dimensions - 7226 ACD/P4ADGAAbutment dimensions - 7226 ACD/P4ADGA

Abutment dimensions

da

min.144 mm

Diameter of shaft abutment
db

min.144 mm

Diameter of shaft abutment
Da

max.216 mm

Diameter of housing abutment
Db

max.223 mm

Diameter of housing abutment
ra

max.2.5 mm

Radius of fillet
rb

max.1 mm

Radius of fillet
dn

170.7 mm

Position of oil nozzle

Calculation data

Basic dynamic load rating C

332 kN

Basic static load rating C0

425 kN

Fatigue load limit Pu

13.4 kN

Attainable speed for grease lubrication  

To be calculated: Single bearing (5600) x speed reduction factor (see table below)

Attainable speed for oil-air lubrication  

To be calculated: Single bearing (8500) x speed reduction factor (see table below)

Contact angle α

25 °

Ball diameter Dw

30.162 mm

Number of rows i

2

Number of balls (per bearing) z

17

Reference grease quantity (per bearing) Gref

72.444 cm³

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

A

Preload G

1 300 N

Axial stiffness  

378 N/µm

Correction factors for preload calculation
Correction factor dependent on bearing series and size f

1.09

Correction factor dependent on contact angle f1

0.99

Correction factor, preload class A f2A

1

Correction factor for hybrid bearings fHC

1

Factors for equivalent bearing load calculation
Calculation factor e

0.68

Axial load factor (single, tandem) Y1

0

Axial load factor (single, tandem) Y2

0.87

Axial load factor (single, tandem) Y0

0.38

Radial load factor (single, tandem) X1

1

Radial load factor (single, tandem) X2

0.41

Radial load factor (single, tandem) 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

Characteristics of Precision Contact Bearings

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.

Advantages of Precision Contact Bearings

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.

Applications of Precision Contact Bearings

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.

NO. d[mm] D[mm] B[mm]
7032 ACDGA/P4A 160 240 38
7032 ACD/P4ATGA 160 240 114
7032 ACD/P4ATBTB 160 240 114
7032 ACD/P4ATBTA 160 240 114
7032 ACD/P4AQBCA 160 240 152
7032 ACD/P4AL 160 240 38
7032 ACD/P4ADGB 160 240 76
7032 ACD/P4ADGA 160 240 76
7032 ACD/P4ADBB 160 240 76
7032 ACD/P4ADBA 160 240 76
7032 ACD/P4A 160 240 38
7032 ACD/HCP4A 160 240 38
7226 CDGA/P4A 130 230 40
7226 CD/P4ADGA 130 230 80
7226 CD/P4ADBC 130 230 80
7226 CD/P4A 130 230 40
7226 ACDGA/P4A 130 230 40
7226 ACD/P4ADGB 130 230 80
7226 ACD/P4ADGA 130 230 80
7226 ACD/P4A 130 230 40
71934 CDGB/P4A 170 230 28
71934 CDGA/P4A 170 230 28
71934 CDGA/P4 170 230 28
71934 CDGA/HCP4A 170 230 28
71934 CD/P4ATBTA 170 230 84
71934 CD/P4AQBCD 170 230 112
71934 CD/P4ADGB 170 230 56
71934 CD/P4ADGA 170 230 56
71934 CD/P4ADBC 170 230 56
71934 CD/P4ADBB 170 230 56

 

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