Kgg 21mm Shaft Diameter Inverted Ball Screw for Machining Machine (CHRI Series, Lead: 2.4mm, Shaft: 21mm)

Product Description

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
  

FACTORY DETAILED PROCESSING PHOTOS
 

FAQ

1. Why choose KGG China?

  Over the past 17 years, KGG has always insisted that "products and services" start from Japanese industry standards,taking Taiwan 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: Shanghai  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 sign back our detailed technical file. 

6. What's your payment terms?

  Our payment terms is 30% deposit,balance 70% before shipment