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43
RONWIN
HS Code: 8431390000
Spring loaded units are used in applications such as shearing machines, presses, molding machines, tool bases, ress brakes, shock loading applications. Spring loaded ball units reduce damage caused by shock loads. They also allow for dimension changes due to temperature and self-adjust to evenly distribute loads.
Features: solid steel body is machined using CNC machine from one piece of steel, zinc-plated surface treatment, bearing steel ball heavy load capacity, incorated spring with shock loading, base flange fixing.
| Model No. | Loading Capacity (kg) | Dimensions (mm) | Weight(g) | |||||||||
| Material | Compress | Suggest/Max. | d | D | F | h1 | h2 | H | P | K | ||
| 4319 | BS/CS | 60kgf | 70/80 | 19.05 | 38 | 53 | 6 | 4.5 | 28 | 46 | 3-Φ5 | 260 |
| 4325 | BS/CS | 100kgf | 120/150 | 25.4 | 50 | 70 | 9 | 5 | 37 | 61.5 | 3-Φ5.5 | 400 |
| 4330 | BS/CS | 150kgf | 200/250 | 30.163 | 60 | 83 | 10 | 6 | 44 | 73 | 3-Φ6 | 1100 |
The Bottom Flange Mounted Spring-Loaded Anti-Vibration Ball Transfer Unit is a precision engineering component that integrates elastic buffering, automatic leveling, constant contact pressure, and multi-directional rolling functions.
Its core positioning is: not only to provide low-friction movement as a standard ball transfer unit but, more importantly, to address a series of issues such as vibration, shock, uneven mounting surfaces, and uneven load distribution encountered by equipment during movement or static support through its built-in spring-loading mechanism. It serves as the "advanced guardian" of equipment stability and motion smoothness.
1. Bottom Flange Mounting:
Refers to the mounting flange being located at the bottom of the product. This structure allows the main body of the ball transfer unit to be "recessed" into a cutout in the mounting platform, with typically only the ball protruding above the platform surface.
Advantages: Compact structure, stable installation, better resistance to overturning moments, lower center of gravity for the equipment, and a cleaner overall appearance.
2. Spring-Loading:
This is the soul of the product. A set of precision springs (usually helical springs or disc spring assemblies) is integrated below or behind the ball.
The springs provide a continuous, preset upward thrust. This means the ball is not rigidly fixed but can be compressed downward while possessing the ability to automatically rebound and reset.
3. Anti-Vibration:
This is one of the core functions enabled by spring-loading. The spring system acts as a damper, effectively absorbing and isolating shocks, vibrations, and high-frequency micro-amplitude oscillations from the direction of motion (vertical and, to some extent, lateral).
It protects the transported precision equipment or reduces the transmission of vibrations generated by the moving mechanism itself.
4. Ball Transfer Unit:
The core rolling component, usually a high-precision bearing steel or ceramic ball, enabling multi-directional rolling within a wear-resistant ball socket.
1. Elastic Load-Bearing and Automatic Leveling:
When multiple such ball transfer units are installed under the same platform, even if the mounting base or transport track is slightly uneven, the compression of the springs adaptively adjusts. Springs under heavier loads compress more, while those under lighter loads compress less, ensuring all balls maintain uniform contact with the track at all times. This avoids the overloading or suspended slipping of individual balls that can occur with rigid installations due to "three-point contact."
2. Vibration and Shock Absorption:
When encountering track joints, bumps, or inertial impacts from starting/stopping, the expansion and contraction of the springs dissipate impact energy, converting severe instantaneous shocks into gentle, slow displacements. This significantly reduces the peak acceleration (G-force) transmitted to the equipment.
3. Providing Constant Contact Pressure:
Regardless of minor load fluctuations, the springs continuously exert a nearly constant pressure on the ball, ensuring reliable contact and smooth rolling between the ball and the track. This prevents wobbling, noise, or inaccurate positioning caused by poor contact under light or no-load conditions.
4. Compensating for Wear and Errors:
As the balls and tracks wear over time, or if the structure undergoes minor deformation due to temperature changes, the spring's expansion and contraction can automatically compensate for these dimensional changes, maintaining stable system performance and extending the overall service life.
Excellent Anti-Vibration and Shock Resistance: Protects precision instruments, CNC machine tools, optical platforms, measuring equipment, etc., from vibration damage.
Automatic Adaptation to Unevenness: Completely resolves issues of uneven load distribution caused by installation errors or foundation settlement, enhancing system stability.
Extremely Smooth Motion: Constant contact pressure ensures stable friction throughout the entire process from startup to constant-speed movement, eliminating "stick-slip effect."
Long Lifespan and High Reliability: By compensating for wear, peak stress is reduced, extending the service life of the balls, tracks, and the entire support system in sync.
Reduced Requirements for Base Precision: Saves time and costs associated with leveling mounting surfaces and tracks.
This component is used in fields with extremely high demands for stability, precision, and reliability:
1. Precision Manufacturing and Inspection:
Moving gantries or worktables of Coordinate Measuring Machines (CMMs), laser cutting machines, high-precision CNC machine tools.
Micro-motion support and vibration-damping systems for optical platforms, lithography machines.
Wafer handling systems for semiconductor manufacturing equipment.
2. Heavy Precision Equipment Movement:
Mounting bases and movement systems for large medical equipment (e.g., MRI, CT), ensuring imaging quality is unaffected by vibration.
Bases for experimental vibration tables, centrifuges, isolating their own vibrations from affecting the surroundings.
3. High-End Material Handling:
Auxiliary support wheels for heavy air-bearing platforms or AGVs transporting precision electronic components, glass panels, fragile artworks.
Assembly and testing platforms for satellites, precision radar components in the aerospace and aviation fields.
4. Special Vehicles and Equipment:
Leveling and vibration-damping support for expansion platforms of military special-purpose vehicles, radar vehicles.
Sliding mechanisms for expansion compartments in high-end RVs or mobile laboratories.
A standard (rigid) ball transfer unit is a passive motion converter (converting sliding to rolling). In contrast, the spring-loaded anti-vibration ball transfer unit is an active, intelligent electromechanical system. Through its elastic elements, it endows the ball transfer system with dynamic adaptability, elevating it from a simple component to a subsystem equipped with buffering, leveling, and pressure-stabilizing functions.
The Bottom Flange Mounted Spring-Loaded Anti-Vibration Ball Transfer Unit represents the advanced form of ball transfer technology. It combines the principles of elasticity and rolling friction in mechanical engineering to provide an elegant and effective modular solution for core challenges in high-end equipment manufacturing, such as vibration control, precision maintenance, and reliable operation. Its purpose is not merely to make objects "movable," but to ensure they remain "as steady as a mountain when stationary, and as smooth as flowing water when in motion."
Spring loaded units are used in applications such as shearing machines, presses, molding machines, tool bases, ress brakes, shock loading applications. Spring loaded ball units reduce damage caused by shock loads. They also allow for dimension changes due to temperature and self-adjust to evenly distribute loads.
Features: solid steel body is machined using CNC machine from one piece of steel, zinc-plated surface treatment, bearing steel ball heavy load capacity, incorated spring with shock loading, base flange fixing.
| Model No. | Loading Capacity (kg) | Dimensions (mm) | Weight(g) | |||||||||
| Material | Compress | Suggest/Max. | d | D | F | h1 | h2 | H | P | K | ||
| 4319 | BS/CS | 60kgf | 70/80 | 19.05 | 38 | 53 | 6 | 4.5 | 28 | 46 | 3-Φ5 | 260 |
| 4325 | BS/CS | 100kgf | 120/150 | 25.4 | 50 | 70 | 9 | 5 | 37 | 61.5 | 3-Φ5.5 | 400 |
| 4330 | BS/CS | 150kgf | 200/250 | 30.163 | 60 | 83 | 10 | 6 | 44 | 73 | 3-Φ6 | 1100 |
The Bottom Flange Mounted Spring-Loaded Anti-Vibration Ball Transfer Unit is a precision engineering component that integrates elastic buffering, automatic leveling, constant contact pressure, and multi-directional rolling functions.
Its core positioning is: not only to provide low-friction movement as a standard ball transfer unit but, more importantly, to address a series of issues such as vibration, shock, uneven mounting surfaces, and uneven load distribution encountered by equipment during movement or static support through its built-in spring-loading mechanism. It serves as the "advanced guardian" of equipment stability and motion smoothness.
1. Bottom Flange Mounting:
Refers to the mounting flange being located at the bottom of the product. This structure allows the main body of the ball transfer unit to be "recessed" into a cutout in the mounting platform, with typically only the ball protruding above the platform surface.
Advantages: Compact structure, stable installation, better resistance to overturning moments, lower center of gravity for the equipment, and a cleaner overall appearance.
2. Spring-Loading:
This is the soul of the product. A set of precision springs (usually helical springs or disc spring assemblies) is integrated below or behind the ball.
The springs provide a continuous, preset upward thrust. This means the ball is not rigidly fixed but can be compressed downward while possessing the ability to automatically rebound and reset.
3. Anti-Vibration:
This is one of the core functions enabled by spring-loading. The spring system acts as a damper, effectively absorbing and isolating shocks, vibrations, and high-frequency micro-amplitude oscillations from the direction of motion (vertical and, to some extent, lateral).
It protects the transported precision equipment or reduces the transmission of vibrations generated by the moving mechanism itself.
4. Ball Transfer Unit:
The core rolling component, usually a high-precision bearing steel or ceramic ball, enabling multi-directional rolling within a wear-resistant ball socket.
1. Elastic Load-Bearing and Automatic Leveling:
When multiple such ball transfer units are installed under the same platform, even if the mounting base or transport track is slightly uneven, the compression of the springs adaptively adjusts. Springs under heavier loads compress more, while those under lighter loads compress less, ensuring all balls maintain uniform contact with the track at all times. This avoids the overloading or suspended slipping of individual balls that can occur with rigid installations due to "three-point contact."
2. Vibration and Shock Absorption:
When encountering track joints, bumps, or inertial impacts from starting/stopping, the expansion and contraction of the springs dissipate impact energy, converting severe instantaneous shocks into gentle, slow displacements. This significantly reduces the peak acceleration (G-force) transmitted to the equipment.
3. Providing Constant Contact Pressure:
Regardless of minor load fluctuations, the springs continuously exert a nearly constant pressure on the ball, ensuring reliable contact and smooth rolling between the ball and the track. This prevents wobbling, noise, or inaccurate positioning caused by poor contact under light or no-load conditions.
4. Compensating for Wear and Errors:
As the balls and tracks wear over time, or if the structure undergoes minor deformation due to temperature changes, the spring's expansion and contraction can automatically compensate for these dimensional changes, maintaining stable system performance and extending the overall service life.
Excellent Anti-Vibration and Shock Resistance: Protects precision instruments, CNC machine tools, optical platforms, measuring equipment, etc., from vibration damage.
Automatic Adaptation to Unevenness: Completely resolves issues of uneven load distribution caused by installation errors or foundation settlement, enhancing system stability.
Extremely Smooth Motion: Constant contact pressure ensures stable friction throughout the entire process from startup to constant-speed movement, eliminating "stick-slip effect."
Long Lifespan and High Reliability: By compensating for wear, peak stress is reduced, extending the service life of the balls, tracks, and the entire support system in sync.
Reduced Requirements for Base Precision: Saves time and costs associated with leveling mounting surfaces and tracks.
This component is used in fields with extremely high demands for stability, precision, and reliability:
1. Precision Manufacturing and Inspection:
Moving gantries or worktables of Coordinate Measuring Machines (CMMs), laser cutting machines, high-precision CNC machine tools.
Micro-motion support and vibration-damping systems for optical platforms, lithography machines.
Wafer handling systems for semiconductor manufacturing equipment.
2. Heavy Precision Equipment Movement:
Mounting bases and movement systems for large medical equipment (e.g., MRI, CT), ensuring imaging quality is unaffected by vibration.
Bases for experimental vibration tables, centrifuges, isolating their own vibrations from affecting the surroundings.
3. High-End Material Handling:
Auxiliary support wheels for heavy air-bearing platforms or AGVs transporting precision electronic components, glass panels, fragile artworks.
Assembly and testing platforms for satellites, precision radar components in the aerospace and aviation fields.
4. Special Vehicles and Equipment:
Leveling and vibration-damping support for expansion platforms of military special-purpose vehicles, radar vehicles.
Sliding mechanisms for expansion compartments in high-end RVs or mobile laboratories.
A standard (rigid) ball transfer unit is a passive motion converter (converting sliding to rolling). In contrast, the spring-loaded anti-vibration ball transfer unit is an active, intelligent electromechanical system. Through its elastic elements, it endows the ball transfer system with dynamic adaptability, elevating it from a simple component to a subsystem equipped with buffering, leveling, and pressure-stabilizing functions.
The Bottom Flange Mounted Spring-Loaded Anti-Vibration Ball Transfer Unit represents the advanced form of ball transfer technology. It combines the principles of elasticity and rolling friction in mechanical engineering to provide an elegant and effective modular solution for core challenges in high-end equipment manufacturing, such as vibration control, precision maintenance, and reliable operation. Its purpose is not merely to make objects "movable," but to ensure they remain "as steady as a mountain when stationary, and as smooth as flowing water when in motion."
