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16
RONWIN
HS Code: 8431390000
A retractable spring-loaded ball transfer unit is a specialized ball transfer component that integrates cushioning and reset functions. Its core characteristic is an internal spring mechanism that allows the ball head to compress downward ("retract") under vertical pressure and automatically return to its original position once the pressure is removed. It retains the low-friction rolling characteristics of a standard ball transfer unit while adding a retractable cushioning function, making it commonly used in precision applications that require handling height variations, providing cushioning, or applying controlled pressure.
Spring Force/Initial Pressure: The minimum force (N or kgf) required to initiate ball head retraction.
Stroke/Retraction Distance: The maximum compressible distance (mm) the ball head can travel from its highest to its lowest point.
Total Height & Mounting Dimensions: Includes overall dimensions after installation and mounting thread/hole specifications.
Ball Head Diameter & Material: Determines load capacity and suitability for the environment.
Load Capacity: The maximum load (static and dynamic) it can withstand.
Repeatability Precision: Consistency in returning to the initial position after multiple compression and reset cycles.
| model no. | material | loading capacity (kg) | weight (g) | |
| suggest | max. | |||
| 1619 | CS/CS | 20 | 30 | 45 |
| PL/CS | 10 | 15 | 25 | |
| SS/SS | 15 | 20 | 45 | |
| PL/SS | 10 | 15 | 25 | |
| model no. | material | loading capacity (kg) | weight (g) | |
| suggest | max. | |||
| 1625 | CS/CS | 30 | 35 | 100 |
| PL/CS | 12 | 18 | 45 | |
| SS/SS | 25 | 30 | 100 | |
| PL/SS | 12 | 18 | 45 | |
This product typically consists of the following key components:
Ball Head: A high-precision metal (such as stainless steel 440C) or ceramic sphere with a smooth surface, high hardness, and wear resistance, ensuring smooth omnidirectional rolling.
Ball Socket: A bowl-shaped seat that houses the ball head, usually made of low-friction and wear-resistant materials (such as engineering plastic, bronze, or hardened steel). Its inner wall precisely matches the ball head, allowing it to roll freely.
Spring Mechanism: This is the core enabling the "retraction" function. A spring is installed beneath the ball socket.
Type: Can be a helical compression spring, disc spring, or elastomer (such as polyurethane).
Function: Provides a controllable, vertical elastic force.
Housing/Mounting Sleeve: A cylindrical metal shell that contains the entire internal mechanism. It usually features external threads (e.g., M-series metric threads) or a mounting flange for secure installation into equipment baseplates or frames.
Seal (Optional): In some models with higher requirements, a sealing ring is included to prevent dust and debris from entering the internal mechanism, ensuring long-term reliable operation.
Cushioning & Shock Absorption: The spring effectively absorbs impact energy from workpieces or equipment, protecting both the workpiece and the equipment itself, and reducing noise.
Adaptation to Height Variations: When workpieces on a conveyor line have uneven heights, the spring compression can automatically compensate for this height difference, ensuring all workpieces are effectively supported and transported smoothly.
Provision of Constant Pressure: The spring force can be converted into a stable, controllable downward or lateral pressure on the workpiece, often used for positioning, clamping, or holding applications.
Overload Protection: In case of accidental overload, the ball head can fully retract, providing a mechanical safety protection function.
Automatic Reset: Once the pressure from above is removed, the spring immediately pushes the ball head assembly back to its original position, ready for the next cycle.
Maintained Rolling Function: The ball head maintains its full range of low-friction rolling capability whether compressed, extended, or at any intermediate position.
Initial State: Under no load, the spring is extended, pushing the ball head to its highest position.
Compression & Retraction: When a workpiece presses down on the ball head with a force exceeding the spring's preload, the ball head assembly overcomes the spring force and moves downward as a whole ("retracts").
Rolling & Cushioning: During retraction and when stabilized at any position, the ball head can still roll freely, moving the workpiece, while the spring continuously provides cushioning and support.
Reset: When the workpiece is removed and the pressure disappears, the spring's force pushes the entire ball head assembly back to its initial highest position.
This component is widely used in automation settings requiring flexible and adaptive handling:
Workpiece Positioning & Clamping: Used in CNC machining or inspection fixtures to clamp workpieces from the top or side, while allowing for movement due to thermal expansion/contraction or minor positional adjustments.
Sorting & Diverting Mechanisms: Utilizes its retraction and rolling characteristics at sorting points to guide workpieces and change their direction.
Z-axis Adjustable Conveyance Platforms: Used to support workpieces of different heights, ensuring all workpiece bottom surfaces contact a unified drive surface (e.g., belt or top plate).
Overload Protection Devices: Installed in areas prone to jamming; the ball head retracts when resistance is excessive, preventing equipment damage.
Precision Assembly Lines: Provides compliant support during the assembly process to avoid scratching precision component surfaces.
The retractable spring-loaded ball transfer unit is a highly integrated, intelligent component. It ingeniously combines omnidirectional rolling with spring cushioning, solving common challenges in automation systems such as rigid impact, height inconsistencies, and the need for flexible clamping. It endows mechanical equipment with greater adaptability and reliability, serving as a crucial solution in the fields of precision assembly, material handling, and tooling fixtures.
A retractable spring-loaded ball transfer unit is a specialized ball transfer component that integrates cushioning and reset functions. Its core characteristic is an internal spring mechanism that allows the ball head to compress downward ("retract") under vertical pressure and automatically return to its original position once the pressure is removed. It retains the low-friction rolling characteristics of a standard ball transfer unit while adding a retractable cushioning function, making it commonly used in precision applications that require handling height variations, providing cushioning, or applying controlled pressure.
Spring Force/Initial Pressure: The minimum force (N or kgf) required to initiate ball head retraction.
Stroke/Retraction Distance: The maximum compressible distance (mm) the ball head can travel from its highest to its lowest point.
Total Height & Mounting Dimensions: Includes overall dimensions after installation and mounting thread/hole specifications.
Ball Head Diameter & Material: Determines load capacity and suitability for the environment.
Load Capacity: The maximum load (static and dynamic) it can withstand.
Repeatability Precision: Consistency in returning to the initial position after multiple compression and reset cycles.
| model no. | material | loading capacity (kg) | weight (g) | |
| suggest | max. | |||
| 1619 | CS/CS | 20 | 30 | 45 |
| PL/CS | 10 | 15 | 25 | |
| SS/SS | 15 | 20 | 45 | |
| PL/SS | 10 | 15 | 25 | |
| model no. | material | loading capacity (kg) | weight (g) | |
| suggest | max. | |||
| 1625 | CS/CS | 30 | 35 | 100 |
| PL/CS | 12 | 18 | 45 | |
| SS/SS | 25 | 30 | 100 | |
| PL/SS | 12 | 18 | 45 | |
This product typically consists of the following key components:
Ball Head: A high-precision metal (such as stainless steel 440C) or ceramic sphere with a smooth surface, high hardness, and wear resistance, ensuring smooth omnidirectional rolling.
Ball Socket: A bowl-shaped seat that houses the ball head, usually made of low-friction and wear-resistant materials (such as engineering plastic, bronze, or hardened steel). Its inner wall precisely matches the ball head, allowing it to roll freely.
Spring Mechanism: This is the core enabling the "retraction" function. A spring is installed beneath the ball socket.
Type: Can be a helical compression spring, disc spring, or elastomer (such as polyurethane).
Function: Provides a controllable, vertical elastic force.
Housing/Mounting Sleeve: A cylindrical metal shell that contains the entire internal mechanism. It usually features external threads (e.g., M-series metric threads) or a mounting flange for secure installation into equipment baseplates or frames.
Seal (Optional): In some models with higher requirements, a sealing ring is included to prevent dust and debris from entering the internal mechanism, ensuring long-term reliable operation.
Cushioning & Shock Absorption: The spring effectively absorbs impact energy from workpieces or equipment, protecting both the workpiece and the equipment itself, and reducing noise.
Adaptation to Height Variations: When workpieces on a conveyor line have uneven heights, the spring compression can automatically compensate for this height difference, ensuring all workpieces are effectively supported and transported smoothly.
Provision of Constant Pressure: The spring force can be converted into a stable, controllable downward or lateral pressure on the workpiece, often used for positioning, clamping, or holding applications.
Overload Protection: In case of accidental overload, the ball head can fully retract, providing a mechanical safety protection function.
Automatic Reset: Once the pressure from above is removed, the spring immediately pushes the ball head assembly back to its original position, ready for the next cycle.
Maintained Rolling Function: The ball head maintains its full range of low-friction rolling capability whether compressed, extended, or at any intermediate position.
Initial State: Under no load, the spring is extended, pushing the ball head to its highest position.
Compression & Retraction: When a workpiece presses down on the ball head with a force exceeding the spring's preload, the ball head assembly overcomes the spring force and moves downward as a whole ("retracts").
Rolling & Cushioning: During retraction and when stabilized at any position, the ball head can still roll freely, moving the workpiece, while the spring continuously provides cushioning and support.
Reset: When the workpiece is removed and the pressure disappears, the spring's force pushes the entire ball head assembly back to its initial highest position.
This component is widely used in automation settings requiring flexible and adaptive handling:
Workpiece Positioning & Clamping: Used in CNC machining or inspection fixtures to clamp workpieces from the top or side, while allowing for movement due to thermal expansion/contraction or minor positional adjustments.
Sorting & Diverting Mechanisms: Utilizes its retraction and rolling characteristics at sorting points to guide workpieces and change their direction.
Z-axis Adjustable Conveyance Platforms: Used to support workpieces of different heights, ensuring all workpiece bottom surfaces contact a unified drive surface (e.g., belt or top plate).
Overload Protection Devices: Installed in areas prone to jamming; the ball head retracts when resistance is excessive, preventing equipment damage.
Precision Assembly Lines: Provides compliant support during the assembly process to avoid scratching precision component surfaces.
The retractable spring-loaded ball transfer unit is a highly integrated, intelligent component. It ingeniously combines omnidirectional rolling with spring cushioning, solving common challenges in automation systems such as rigid impact, height inconsistencies, and the need for flexible clamping. It endows mechanical equipment with greater adaptability and reliability, serving as a crucial solution in the fields of precision assembly, material handling, and tooling fixtures.
