1.What are the models of ball screw support seats?
Answer: The ball screw support seat is divided into a fixed side and a supporting side. It is a core component of precision machinery and is usually called a screw fixed seat. Its most basic models are square AK, AF, BK, BF, EK, EF and round FK, FF.
BCNC screw support seats are diverse, and the basic models are equipped with a large amount of inventory to meet the diverse needs of customers.
2.What bearings are used on the fixed side of the ball screw support seat?
Answer: The fixed side of the screw support seat uses a preload-adjusted zero-clearance P5-level DF (face-to-face) angular contact ball bearing.
In addition, the miniature models of AK/EK/FK6 and 8 are equipped with P5-level miniature angular contact bearings developed specifically for miniature ball screws. They have a small ball diameter and a large number of steel balls. They are miniature angular contact bearings with high rigidity and high precision, and can obtain stable rotation performance.
BCNC’s use of angular contact ball bearings can fully meet the C5-level screw support seat.
3.What bearings are used on the support side of the ball screw support seat?
Answer: Deep groove ball bearings are used on the support side of the screw support seat, and BNCN uses deep groove ball bearings.
4.What is the quality and accuracy of the BCNC screw support seat?
Answer: BCNC specializes in the production of C5-grade ball screw support seats and screw fixing seats.
The center height of the screw support seat, the bearing accuracy, and the bearing mounting hole accuracy determine the accuracy of the screw support seat. If the accuracy of the three does not meet the standard requirements, it will cause adverse phenomena such as shaking and abnormal noise during operation.
The center height tolerance of our company’s screw support seat is -0.02~0mm, and it uses zero-clearance P5-grade DF angular contact ball bearings. The bearing mounting hole accuracy is 0~0.02mm. It is equipped with professional assembly methods and systematic testing processes. It has high quality accuracy and strong stability, and can replace imported brands.
5.Can the ball screw support seat be disassembled?
Answer: The ball screw support seat is a precision part. Its main body, angular contact ball bearing, gland, and oil seal are assembled as a whole by professionals in a special way and cannot be disassembled.
6.What are the accessories of the ball screw support seat?
Answer: The fixed side accessories of the BCNC ball screw support seat include 1 special locking nut and 2 spacer rings. The screw support support side accessories include 1 retaining ring.
7.What are the differences between deep groove ball bearings and angular contact ball bearings used in screw support seats?
Answer: The two types of bearings are mainly different in the following aspects:
First, the contact angle is different.
The contact angle of deep groove ball bearings is 0°, while the contact angle of angular contact ball bearings is greater than 0°, generally 15°, 25°, 30°, etc.;
Second, the load direction is different.
Deep groove ball bearings mainly bear radial loads, while angular contact ball bearings can bear axial and radial loads at the same time;
Third, the purpose is different.
In terms of the limit speed, the limit speed of angular contact ball bearings of the same size is higher than that of deep groove ball bearings. Deep groove ball bearings are generally used alone, while angular contact ball bearings are generally used in pairs.
There are mainly three types: back-to-back DB, face-to-face DF, and parallel DT;
Fourth, the structure is different.
Deep groove ball bearings have double ribs on both sides of the outer ring groove, while angular contact ball bearings generally have single ribs.
9.What are the surface treatments for ball screw support seats?
Answer: The surface treatments for ball screw support seats include ferroferric oxide protective film, electroless nickel plating, low-temperature black chrome plating, etc. Among them, ferroferric oxide protective film is also called blackening treatment, which is the most common surface treatment method. BCNC screw support seats have undergone salt spray tests and are rust-proof and durable.