In the outer return ball bearing pair of a balanced double row axial piston pump, the relative motion relationship refers to the relationship between the two parts of the bearing pair and how they move relative to each other. In this type of bearing arrangement, the rotating elements of the pump (such as the piston and cylinder block) interact with stationary elements (including the valve plate and swash plate). Spherical bearing pairs help support and guide rotating elements while carrying axial and radial loads. The relative motion relationship in the outer return ball bearing pair can be described as follows: 1. Outer spherical bearing: The outer spherical bearing is composed of an outer spherical surface and an inner spherical surface. The outer sphere is usually part of a stationary component, such as a valve plate, while the inner sphere is part of a rotating component, such as a cylinder block. 2. Rotation: As the cylinder rotates, it moves relative to the fixed valve plate. The spherical surface of the bearing pair allows rotational movement between the two components. 90-R-055-HF-5-AB-60-L-4-C6-D-03-GBA-29-29-20 90R055HF5AB60L4C6D03GBA292920 90-R-055-HF-5-AB-60-S-3-C6-C-03-GBA-42-42-24 90R055HF5AB60S3C6C03GBA424224 90-R-055-HF-5-AB-60-S-3-C6-C-06-GBA-26-26-30 90R055HF5AB60S3C6C06GBA262630 90R055-HF-5-AB-60-S-3-C6-D-03-GBA-29-29-24 90R055HF5AB60S3C6D03GBA292924 90-R-055-HF-5-AB-60-S-3-C6-D-03-GBA-29-29-24 90R055HF5AB60S3C6D03GBA292924 90-R-055-HF-5-AB-60-S-4-C6-C-03-GBA-23-23-24 90R055HF5AB60S4C6C03GBA232324 90-R-055-HF-5-AB-80-R-3-S1-D-03-GBA-35-35-24 90R055HF5AB80R3S1D03GBA353524 90-R-055-HF-5-AB-80-R-4-S1-C-03-GBA-35-35-24 90R055HF5AB80R4S1C03GBA353524 90-R-055-HF-5-AB-80-R-4-S1-C-04-GBA-35-35-24 90R055HF5AB80R4S1C04GBA353524 90-R-055-HF-5-BB-80-L-4-S1-C-03-GBA-26-26-24 90R055HF5BB80L4S1C03GBA262624 90-R-055-HF-5-BB-80-L-4-S1-C-03-GBA-35-35-24 90R055HF5BB80L4S1C03GBA353524 90-R-055-HF-5-BC-60-R-4-S1-C-03-GBA-42-42-24 90R055HF5BC60R4S1C03GBA424224 90-R-055-HF-5-BC-60-S-3-S1-C-03-GBA-40-40-24 90R055HF5BC60S3S1C03GBA404024 90-R-055-HF-5-BC-80-P-3-C6-C-03-GBA-38-38-24 90R055HF5BC80P3C6C03GBA383824 90-R-055-HF-5-CD-60-S-3-C6-C-03-GBA-32-32-24 90R055HF5CD60S3C6C03GBA323224 90R055-HF-5-CD-60-S-3-C6-C-03-GBA-42-42-24 90R055HF5CD60S3C6C03GBA424224 90-R-055-HF-5-CD-60-S-3-C6-C-03-GBA-42-42-24 90R055HF5CD60S3C6C03GBA424224 90-R-055-HF-5-CD-80-R-3-S1-C-03-GBA-35-35-24 90R055HF5CD80R3S1C03GBA353524 90-R-055-HF-5-CD-80-R-3-S1-C-03-GBA-42-42-24 90R055HF5CD80R3S1C03GBA424224 90-R-055-HF-5-CD-80-R-3-S1-D-03-GBA-38-38-24 90R055HF5CD80R3S1D03GBA383824 3. Axial displacement: The spherical bearing pair also allows axial displacement between the cylinder block and the valve plate. This axial movement occurs due to the reciprocating motion of the piston in the cylinder block. 4. Self-alignment: One of the main advantages of the spherical bearing pair is its self-alignment ability. The spherical shape of the bearing surfaces enables them to compensate for any misalignment or angular misalignment between rotating and stationary parts. This self-aligning feature helps reduce friction, wear and potential damage to bearing surfaces. 5. Load distribution: The spherical bearing pair helps to distribute the axial and radial loads generated during the operation of the pump. The spherical surface of the bearing provides a larger contact area, which helps to distribute loads evenly and reduce localized stresses. 6. Lubrication: Proper lubrication is essential for the smooth operation of bearing pairs. Lubricants such as oil or grease are used to reduce friction and wear between spherical surfaces. The lubricant forms a thin film between the bearing surfaces, providing a protective layer and reducing frictional losses. 7. Sealing: The outer spherical bearing pair may need to be sealed to prevent lubricant leakage and contamination of external components. Sealing elements such as O-rings or gaskets are used to keep the bearing sealed from the surrounding environment. 8. Tolerance Compensation: Spherical bearing pairs can compensate manufacturing tolerances to ensure correct fit of rotating and stationary parts. The spherical shape allows slight misalignment or deviations in dimensions without affecting the overall performance of the pump. 9. Wear and Maintenance: Over time, bearing surfaces may wear due to dynamic loads and relative motion. Regular maintenance and inspections are required to monitor the condition of the bearing pairs and replace any worn parts to maintain optimum pump performance. 90-R-055-HF-5-CD-80-R-4-S1-C-03-GBA-35-35-24 90R055HF5CD80R4S1C03GBA353524 90-R-055-HF-5-CD-80-S-3-S1-C-03-GBA-38-38-24 90R055HF5CD80S3S1C03GBA383824 90R055-HF-5-CD-80-S-3-S1-C-03-GBA-42-42-24 90R055HF5CD80S3S1C03GBA424224 90-R-055-HF-5-CD-80-S-3-S1-C-03-GBA-42-42-24 90R055HF5CD80S3S1C03GBA424224 90-R-055-HF-5-NN-60-P-4-C6-B-03-GBA-29-29-20 90R055HF5NN60P4C6B03GBA292920 90-R-055-HF-5-NN-60-R-4-S1-C-03-GBA-35-35-24 90R055HF5NN60R4S1C03GBA353524 90R055-HF-5-NN-80-R-4-C6-C-03-GBA-23-23-24 90R055HF5NN80R4C6C03GBA232324 90-R-055-HF-5-NN-80-R-4-C6-C-03-GBA-23-23-24 90R055HF5NN80R4C6C03GBA232324 90-R-055-HF-5-NN-80-R-4-C6-C-03-GBA-30-30-24 90R055HF5NN80R4C6C03GBA303024 90-R-055-HF-5-NN-80-S-3-C6-C-03-GBA-35-35-22 90R055HF5NN80S3C6C03GBA353522 90-R-055-HF-5-NN-80-S-4-S1-C-03-GBA-38-38-20 90R055HF5NN80S4S1C03GBA383820 90-R-055-HS-1-AB-60-P-3-C6-C-03-GBA-35-35-24 90R055HS1AB60P3C6C03GBA353524 90-R-055-HS-1-AB-60-P-4-S1-C-00-GBA-32-32-24 90R055HS1AB60P4S1C00GBA323224 90-R-055-HS-1-AB-60-S-3-C6-C-03-GBA-32-32-20 90R055HS1AB60S3C6C03GBA323220 90-R-055-HS-1-AB-60-S-4-S1-B-03-GBA-42-42-24 90R055HS1AB60S4S1B03GBA424224 90-R-055-HS-1-AB-60-S-4-S1-C-03-GBA-21-21-20 90R055HS1AB60S4S1C03GBA212120 90-R-055-HS-1-AB-80-L-4-S1-D-03-GBA-26-26-28 90R055HS1AB80L4S1D03GBA262628 90-R-055-HS-1-AB-80-P-3-S1-C-03-GBA-35-35-24 90R055HS1AB80P3S1C03GBA353524 90-R-055-HS-1-AB-80-R-3-S1-C-03-GBA-35-35-24 90R055HS1AB80R3S1C03GBA353524 90-R-055-HS-1-AB-80-S-4-S1-C-03-GBA-35-35-24 90R055HS1AB80S4S1C03GBA353524 10. Operating conditions: The relative motion relationship in the outer spherical bearing pair will be affected by operating conditions such as pump speed, temperature and pressure. These factors affect the lubrication effectiveness, load distribution and overall performance of the bearing pair. 11. Balance Force: In a balanced double row axial piston pump, the pair of spherical bearings helps to balance the force generated by the pistons. As the piston reciprocates in the cylinder block, the spherical bearing pair provides smooth motion while balancing the axial forces exerted by the piston. This balance helps reduce vibration and increases the overall stability of the pump. 12. Wear Compensation: During operation, due to friction and loading conditions, the surface of the spherical bearing may wear. However, the design of the bearing pair allows wear compensation. As the surfaces wear over time, the spherical shape of the bearing pair helps maintain contact and proper alignment, compensating for worn surfaces and extending the life of the bearing pair. 13. Damping effect: The spherical bearing pair can play a damping role and absorb the vibration and impact generated during the operation of the pump. This damping effect helps to reduce noise, minimize component stress, and improve the overall smoothness of pump performance. 90-R-055-HS-1-BB-60-S-3-C6-C-03-GBA-29-29-24 90R055HS1BB60S3C6C03GBA292924 90-R-055-HS-1-BC-60-P-3-S1-D-03-GBA-23-23-20 90R055HS1BC60P3S1D03GBA232320 90-R-055-HS-1-BC-60-P-4-S1-C-03-GBA-35-35-24 90R055HS1BC60P4S1C03GBA353524 90-R-055-HS-1-BC-60-P-4-S1-C-03-GBA-38-38-24 90R055HS1BC60P4S1C03GBA383824 90-R-055-HS-1-BC-60-R-3-S1-C-03-GBA-42-42-24 90R055HS1BC60R3S1C03GBA424224 90-R-055-HS-1-BC-60-R-4-S1-C-03-GBA-38-38-24 90R055HS1BC60R4S1C03GBA383824 90-R-055-HS-1-BC-60-R-4-S1-D-03-GBA-14-20-30 90R055HS1BC60R4S1D03GBA142030 90-R-055-HS-1-BC-60-S-3-S1-B-03-GBA-42-42-24 90R055HS1BC60S3S1B03GBA424224 90-R-055-HS-1-BC-60-S-3-S1-C-03-GBA-42-42-24 90R055HS1BC60S3S1C03GBA424224 90-R-055-HS-1-BC-80-P-3-S1-C-09-GBA-35-35-24 90R055HS1BC80P3S1C09GBA353524 90-R-055-HS-1-BC-80-P-4-S1-C-03-GBA-35-35-24 90R055HS1BC80P4S1C03GBA353524 90-R-055-HS-1-BC-80-P-4-S1-C-09-GBA-35-35-2490R055HS1BC80P4S1C09GBA353524 90-R-055-HS-1-BC-80-R-4-S1-C-00-GBA-35-35-24 90R055HS1BC80R4S1C00GBA353524 90-R-055-HS-1-BC-80-R-4-S1-C-03-GBA-21-21-24 90R055HS1BC80R4S1C03GBA212124 90-R-055-HS-1-BC-80-S-3-S1-C-02-GBA-42-42-24 90R055HS1BC80S3S1C02GBA424224 90-R-055-HS-1-BC-80-S-3-S1-C-03-GBA-35-35-24 90R055HS1BC80S3S1C03GBA353524 90-R-055-HS-1-CD-60-L-4-S1-D-03-GBA-23-23-24 90R055HS1CD60L4S1D03GBA232324 90-R-055-HS-1-CD-60-P-4-C6-C-03-GBA-32-14-30 90R055HS1CD60P4C6C03GBA321430 90-R-055-HS-1-CD-60-P-4-S1-C-03-GBA-42-42-24 90R055HS1CD60P4S1C03GBA424224 90-R-055-HS-1-CD-80-P-3-C6-C-03-GBA-35-35-24 90R055HS1CD80P3C6C03GBA353524 14. Temperature considerations: The relative motion relationship of the outer spherical bearing pair should consider temperature changes. The operation of the pump generates heat, and the design of the bearing pair should be able to withstand the resulting thermal expansion. Adequate clearance and proper material selection should be considered to ensure optimum performance and prevent binding or excessive wear due to temperature effects. 15. Material selection: The material selection of the outer return ball bearing pair is critical to ensure durability and performance. Typically, bearing surfaces are made of highly wear-resistant materials such as hardened steel or bearing-grade alloys. Material selection should take into account factors such as load capacity, operating conditions, and compatibility with the lubricant used in the pump. 16. Maintenance and inspection: Regular maintenance and inspection are necessary to ensure the normal operation of the outer return ball bearing pair. This includes monitoring wear, lubrication effectiveness and checking for any signs of damage or misalignment. Timely maintenance helps prevent catastrophic failure and prolongs the overall life of the bearing pair. It should be noted that the specific design and characteristics of the spherical socket bearing pair may vary depending on the pump manufacturer and application requirements. Therefore, consulting the pump's technical documentation and manufacturer's guidelines is critical for precise information about the relative kinematic relationship of a particular pump model.