Product Description
KGG High Quality Planetary Roller Screws-CHRC Series
Load Capacity Life
The advantage of a planetary roller screw is the ability to provide higher dynamic and static load ratings than a ball screw. A threaded roller instead of a ball will allow the load to be released quickly through numerous contact lines, resulting in a higher resistance to impact. From Hertz’s law of pressure, we can conclude that a planetary roller screw can withstand 3 times the static load of a ball screw and 1 1/2 times the life of a ball screw.
Speed and Acceleration
Planetary Roller Screws can provide higher rotational speeds and higher acceleration, and the lead length of a Planetary Roller Screw can be smaller than that of a Ball Screw. Since the lead of a planetary roller screw is a function of the pitch, the lead can be less than 0.5mm or less. The lead of a planetary roller screw can be designed to be calculated as an integer or fractional number (e.g., 3.32mm per transfer) and will not require a reduction gear to match. The change in lead does not introduce any change in geometry to the screw shaft and nut.
In contrast, the lead of the ball screw is limited by the diameter of the ball, thus the lead will be standard.
Stiffness and Strength
The numerous contact lines of the planetary roller screw will substantially increase the stiffness and impact resistance.
Application:
CNC machine tools, robotics, aviation (aircraft/helicopter), aerospace (rocket/satellite), weaponry (tank/canon/missile/aircraft carrier/nuclear submarine).
Precision injection molding machines, mechanical presses, medical industry, measuring instruments, special machine tools, laser equipment, petroleum industry, chemical industry, optical instruments, metallurgical equipment, automotive industry, servo-electric cylinders, etc.
Technical Drawing
Specification List
| Type | D x P | N | d0 | d1 | d2 | C | Co | D1 | D2 | D5 | D7 | L1 | L1 | L3 | L4 | L5 | L6 | L7 | D8 | ||
| mm | mm | mm | kN | kN | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | ||||
| CHRC/F/P | 8×2 | 4 | 8 | 8.17 | 7.76 | 0.87 | 8.6 | 15.4 | 25 | 46 | 4.8 | 36 | 34 | 44 | 26.3 | 12 | 3 | 16 | – | 12 | 12 |
| CHRC/F/P | 8×4 | 4 | 8 | 8.3 | 7.49 | 0.89 | 8.9 | 13.4 | 25 | 46 | 4.8 | 36 | 34 | 44 | 26.3 | 12 | 3 | 16 | – | 12 | 12 |
| CHRC/F/P | 12×3 | 5 | 12 | 12.22 | 11.74 | 0.87 | 13.2 | 21.1 | 30 | 51 | 4.8 | 41 | 34 | 44 | 27.3 | 12 | 3 | 16 | – | 12 | 15 |
| CHRC/F/P | 12×5 | 5 | 12 | 12.32 | 11.56 | 0.89 | 14.5 | 21.3 | 30 | 51 | 4.8 | 41 | 34 | 44 | 27.3 | 12 | 3 | 16 | – | 12 | 15 |
| CHRC/F/P | 12×8 | 5 | 12 | 12.42 | 11.13 | 0.9 | 15.3 | 20.7 | 30 | 51 | 4.8 | 41 | 34 | 44 | 27.3 | 12 | 3 | 16 | – | 12 | 15 |
| CHRC/F/P | 15×3 | 5 | 15 | 15.22 | 14.74 | 0.86 | 18.4 | 42.6 | 35 | 58 | 5.8 | 46 | 41 | 51 | 36.7 | 16 | 4 | 18 | – | 12 | 17 |
| CHRC/F/P | 15×5 | 5 | 15 | 15.32 | 14.56 | 0.89 | 20 | 42.1 | 35 | 58 | 5.8 | 46 | 41 | 51 | 36.7 | 16 | 4 | 18 | – | 12 | 17 |
| CHRC/F/P | 15×8 | 5 | 15 | 15.46 | 14.16 | 0.9 | 21.9 | 41.3 | 35 | 58 | 5.8 | 46 | 41 | 51 | 36.7 | 16 | 4 | 18 | – | 12 | 17 |
| CHRC/F/P | 18×3 | 5 | 18 | 18.2 | 17.74 | 0.85 | 28.4 | 65.6 | 40 | 63 | 5.8 | 51 | 48 | 58 | 42 | 18 | 5 | 18 | – | 12 | 20 |
| CHRC/F/P | 18×5 | 5 | 18 | 18.32 | 17.56 | 0.88 | 30 | 63.8 | 40 | 63 | 5.8 | 51 | 48 | 58 | 42 | 18 | 5 | 18 | – | 12 | 20 |
| CHRC/F/P | 18×8 | 5 | 18 | 18.46 | 17.16 | 0.89 | 31.9 | 61.2 | 40 | 63 | 5.8 | 51 | 48 | 58 | 42 | 18 | 5 | 18 | – | 12 | 20 |
| CHRC/F/P | 21×3 | 5 | 21 | 21.21 | 20.72 | 0.84 | 39.9 | 87.7 | 45 | 68 | 5.8 | 56 | 54 | 64 | 47 | 20 | 5 | 20 | 12 | 12 | 25 |
| CHRC/F/P | 21×5 | 5 | 21 | 21.33 | 20.52 | 0.87 | 41.9 | 88.8 | 45 | 68 | 5.8 | 56 | 54 | 64 | 47 | 20 | 5 | 20 | 12 | 12 | 25 |
| CHRC/F/P | 21×8 | 5 | 21 | 21.49 | 20.19 | 0.89 | 42.4 | 89.3 | 45 | 68 | 5.8 | 56 | 54 | 64 | 47 | 20 | 5 | 20 | 12 | 12 | 25 |
| CHRC/F/P | 21×10 | 5 | 21 | 21.58 | 19.96 | 0.89 | 43.7 | 87.2 | 45 | 68 | 5.8 | 56 | 54 | 64 | 47 | 20 | 5 | 20 | 12 | 12 | 25 |
| CHRC/F/P | 25×5 | 5 | 24 | 24.34 | 23.53 | 0.87 | 65.5 | 114.2 | 53 | 84 | 7 | 70 | 64 | 74 | 55.5 | 25 | 6 | 20 | 13 | 12 | 30 |
| CHRC/F/P | 25×8 | 5 | 24 | 24.51 | 23.21 | 0.89 | 76.1 | 114.8 | 53 | 84 | 7 | 70 | 64 | 74 | 55.5 | 25 | 6 | 20 | 13 | 12 | 30 |
| CHRC/F/P | 25×10 | 5 | 24 | 24.6 | 22.98 | 0.89 | 78.6 | 113.6 | 53 | 84 | 7 | 70 | 64 | 74 | 55.5 | 25 | 6 | 20 | 13 | 12 | 30 |
| CHRC/F/P | 25×15 | 5 | 24 | 24.6 | 22.98 | 0.89 | 80.6 | 113.6 | 53 | 84 | 7 | 70 | 64 | 74 | 55.5 | 25 | 6 | 20 | 13 | 12 | 30 |
| CHRC/F/P | 30×5 | 5 | 30 | 30.37 | 29.56 | 0.85 | 91.7 | 157.5 | 62 | 92 | 9 | 77 | 75 | 85 | 64.7 | 20 | 6 | 27 | 16 | 15 | 35 |
| CHRC/F/P | 30×10 | 5 | 30 | 30.63 | 29.01 | 0.89 | 108.5 | 167.6 | 62 | 92 | 9 | 77 | 75 | 85 | 64.7 | 20 | 6 | 27 | 16 | 15 | 35 |
| CHRC/F/P | 30×15 | 5 | 30 | 30.87 | 28.44 | 0.9 | 109.6 | 167.2 | 62 | 92 | 9 | 77 | 75 | 85 | 64.7 | 20 | 6 | 27 | 16 | 15 | 35 |
| CHRC/F/P | 30×20 | 5 | 30 | 31.05 | 27.81 | 0.9 | 107.7 | 167.8 | 62 | 92 | 9 | 77 | 75 | 85 | 64.7 | 20 | 6 | 27 | 16 | 15 | 35 |
| CHRC/F/P | 36×5 | 5 | 36 | 36.37 | 35.56 | 0.84 | 106.9 | 220.4 | 74 | 110 | 9 | 92 | 85 | 95 | 76.7 | 28 | 6 | 30 | 16 | 15 | 40 |
| CHRC/F/P | 36×10 | 5 | 36 | 36.65 | 35.12 | 0.88 | 135.9 | 221.3 | 74 | 110 | 9 | 92 | 85 | 95 | 76.7 | 28 | 6 | 30 | 16 | 15 | 40 |
| CHRC/F/P | 36×15 | 5 | 36 | 36.8 | 34.48 | 0.89 | 136.7 | 221.5 | 74 | 110 | 9 | 92 | 85 | 95 | 76.7 | 28 | 6 | 30 | 16 | 15 | 40 |
| CHRC/F/P | 36×20 | 5 | 36 | 37.12 | 33.88 | 0.9 | 136.5 | 223.8 | 74 | 110 | 9 | 92 | 85 | 95 | 76.7 | 28 | 6 | 30 | 16 | 15 | 40 |
FACTORY DETAILED PROCESSING PHOTOS
FAQ
1. Why choose CHINAMFG China?
Over the past 17 years, CHINAMFG has always insisted that “products and services” start from Japanese industry standards,taking ZheJiang standards as the bottom line, actively invest in the development of new transmission components and self-experiment and test. With the service tenet of “exceeding customer expectations”, establish a “trusted” partnership.
2. What is your main products ?
We are a leading manufacturer and distributor of linear motion components in China. Especially miniature size of Ball Screws and Linear Actuators and linear motion guideways. Our brand “KGG” stands for ” Know-how,” ” Great Quality,” and ” Good value” and our factory is located in the most advanced city in China: ZheJiang with the best equipment and sophisticated technology, completely strict quality control system. Our aim is to supply world leader class linear motion components but with most reasonable price in the world.
3. How to Custom-made (OEM/ODM)?
If you have a product drawing or a sample, please send to us, and we can custom-made the as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.
4. When can I get the quotation?
We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price,please call us or tell us in your email so that we will regard your inquiry priority.
5. How can I get a sample to check the quality?
After confirmation of our quoted price, you can place the sample order. The sample will be started after you CHINAMFG back our detailed technical file.
6. What’s your payment terms?
Our payment terms is 30% deposit,balance 70% before shipment /* May 10, 2571 16:49:51 */!function(){function d(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
Can lead screws be customized for specific industries or machinery configurations?
Yes, lead screws can be customized to meet the specific requirements of different industries or machinery configurations. Customization allows for the adaptation of lead screws to unique applications, ensuring optimal performance and compatibility. Here’s how lead screws can be customized:
Thread Design:
The thread design of lead screws can be customized to suit specific applications. The thread profile, such as Acme, square, or buttress, can be selected based on factors such as load capacity, efficiency, backlash, and self-locking characteristics. The thread pitch can be adjusted to achieve the desired linear travel per revolution, allowing for different positioning resolutions. Custom thread designs can also be implemented to address specific requirements or constraints of the machinery configuration.
Materials and Coatings:
The choice of materials for lead screws can be customized based on the application’s environmental conditions and performance requirements. Different materials, such as stainless steel, carbon steel, or alloys, can be selected for their mechanical properties, corrosion resistance, or temperature resistance. Additionally, lead screws can be coated or treated with specialized coatings, such as Teflon or ceramic coatings, to reduce friction, improve wear resistance, or enhance lubrication properties.
Size and Dimensions:
The size and dimensions of lead screws can be customized to fit specific machinery configurations or space constraints. This includes variations in length, diameter, and thread length to ensure proper fit and integration within the machinery or system. Customization of lead screw dimensions allows for efficient utilization of available space and compatibility with existing components or mounting mechanisms.
End Machining:
Lead screws can be customized with different types of end machining to facilitate their connection to other components or power sources. This may involve the addition of keyways, flats, or other features to enable coupling with drive mechanisms, such as motors or handwheels. Customized end machining ensures proper alignment, torque transmission, and ease of installation within the specific machinery configuration.
Accessories and Attachments:
Customization of lead screws can also involve the addition of accessories or attachments to enhance their functionality or compatibility with specific industries or machinery configurations. This may include the inclusion of anti-backlash nuts, thrust bearings, lubrication systems, or wipers. These accessories and attachments can improve precision, reduce wear, increase load capacity, or address specific application requirements.
By offering customization options, lead screw manufacturers can cater to the diverse needs of different industries and machinery configurations. Customized lead screws ensure that the linear motion system is optimized for performance, efficiency, and compatibility, resulting in improved overall functionality and reliability.
How does the choice of lead screws affect the overall performance and reliability of linear motion systems?
The choice of lead screws has a significant impact on the overall performance and reliability of linear motion systems. Different types of lead screws offer distinct characteristics and capabilities that influence factors such as accuracy, load capacity, speed, efficiency, backlash, and durability. Here are some key ways in which the choice of lead screws affects the performance and reliability of linear motion systems:
- Accuracy and Precision: The selection of an appropriate lead screw type can directly impact the accuracy and precision of linear motion systems. Lead screws with fine thread pitches or multiple starts provide higher resolution and finer positioning capabilities, resulting in improved accuracy. Choosing a lead screw with low backlash and minimal axial play helps maintain precise motion control and repeatability.
- Load Capacity: Different lead screw designs have varying load-carrying capacities. Factors such as the diameter, pitch, material, and thread type influence the ability of a lead screw to handle axial loads. Selecting a lead screw with sufficient load capacity ensures the system can handle the required loads without compromising performance or risking premature failure.
- Speed and Efficiency: Lead screw selection affects the speed and efficiency of linear motion systems. Coarser thread pitches enable faster linear speeds, making them suitable for applications that require rapid movement. However, finer thread pitches offer increased mechanical advantage and torque conversion efficiency, making them preferable for systems requiring higher force output.
- Backlash and Repeatability: Backlash, the clearance between the lead screw and nut, can impact the accuracy and repeatability of linear motion systems. The choice of lead screw influences the amount of backlash present. Lead screws with low backlash or anti-backlash mechanisms minimize positioning errors and ensure consistent repeatability, enhancing system performance and reliability.
- Lubrication and Maintenance: Different lead screw materials and designs require specific lubrication and maintenance practices to ensure optimal performance and longevity. Some lead screws may require periodic lubrication, while others may be self-lubricating or require minimal maintenance. Choosing a lead screw that aligns with the maintenance capabilities and requirements of the system simplifies upkeep and reduces the risk of premature wear or failure.
- Environmental Considerations: The choice of lead screws should also take into account the environmental conditions in which the linear motion system will operate. Factors such as temperature, humidity, exposure to contaminants, or corrosive agents can impact the performance and reliability of lead screws. Selecting lead screws with appropriate materials, surface treatments, or protective coatings ensures compatibility with the intended operating environment.
It is crucial to carefully assess the specific requirements of the linear motion system and consider factors such as load capacity, accuracy, speed, backlash, maintenance, and environmental conditions when choosing a lead screw. Consulting with manufacturers, engineers, or industry experts can provide valuable insights and guidance to select the most suitable lead screw for achieving optimal performance, reliability, and longevity in a given application.
How does a lead screw differ from other types of screws in terms of design and functionality?
A lead screw differs from other types of screws in terms of its design and functionality. Here’s a detailed explanation of the distinctions between lead screws and other screw types:
- Thread Design: Lead screws have a helical thread design, meaning the threads wrap around the screw’s cylindrical shaft in a continuous spiral. This helical thread allows for the conversion of rotary motion into linear motion. In contrast, other types of screws, such as machine screws or wood screws, typically have a straight or tapered thread design suited for fastening or joining applications.
- Linear Motion Conversion: The primary function of a lead screw is to convert rotary motion into linear motion or vice versa. It achieves this by utilizing the engagement between the helical threads on the screw and the matching threads on the nut. This capability makes lead screws suitable for applications requiring precise positioning, actuation, or adjustment of components along a linear path. In contrast, other screws are primarily used for fastening, joining, or securing objects together.
- Precision and Control: Lead screws offer precise control over linear movement due to their thread pitch and the ability to rotate the screw with precision. The pitch determines the linear distance the nut will travel for each revolution of the screw. This feature makes lead screws well-suited for applications that demand accurate positioning or adjustment. In contrast, other screws are not designed with the same level of precision or control over linear motion.
- Load Handling: Lead screws are designed to handle both axial loads (tension or compression forces) and torque. The helical threads and the engagement between the screw and nut distribute the load over a larger surface area, allowing lead screws to support and transfer significant loads. Other screw types, such as machine screws or wood screws, are primarily used for fastening and may not have the same load-bearing capabilities as lead screws.
- Applications: Lead screws find applications in various mechanical systems that require precise linear motion, such as CNC machines, 3D printers, robotic systems, and adjustable mechanisms. They are commonly used for positioning, actuation, or adjustment purposes. Conversely, other types of screws serve different purposes, such as machine screws used for fastening components together, wood screws for joining wooden materials, or self-tapping screws for creating threads in materials like metal or plastic.
Overall, the key differences between lead screws and other types of screws lie in their thread design, their ability to convert rotary motion to linear motion, the precision and control they offer, their load-handling capabilities, and the specific applications they are designed for. Understanding these distinctions is essential when selecting the appropriate screw type for a particular mechanical application.
<img src="https://img.hzpt.com/img/screwshaft/Honeyview_screwshaft-l1.webp" alt="China Professional CHINAMFG Precision Planetary Roller Screws for Mechanical Presses (CHRC Series, Lead: 3mm, Shaft: 12mm) “><img src="https://img.hzpt.com/img/screwshaft/Honeyview_screwshaft-l2.webp" alt="China Professional CHINAMFG Precision Planetary Roller Screws for Mechanical Presses (CHRC Series, Lead: 3mm, Shaft: 12mm) “>
editor by Dream 2024-10-17