
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
| 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 class |
A |
|
| Preload | G |
1 300 N |
| Axial stiffness |
378 N/µm |
| 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 |
| 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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