Product Description
Structure: Ball grinding nut SFAR series is mainly composed of nut body, ball, circulation device and other parts. The nut body is equipped with a precise spiral raceway, the ball is placed in the raceway, and the circulating device ensures that the ball is rolled in the raceway, so that the nut can cooperate with the ball screw to achieve linear movement.
Working principle: When the ball screw rotates, the ball rolls between the raceway of the screw and the nut, and drives the nut to move in a straight line along the screw axis due to the rolling friction of the ball. Compared with the traditional sliding friction, this rolling friction method greatly reduces the friction force and improves the transmission efficiency.
Product parameters
| Nominal type | Shaft diameter | lead | Pearl diameter | Nut size | Dynamic rated load | Static rated load | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d | l | Da | D | A | B | L | W | H | X | Q | n | Ca | Coa | |
| SFSR1205-2.8 | 12 | 5 | 2.5 | 24 | 40 | 10 | 31 | 32 | 30 | 4.5 | M6x1 | 2.8x1 | 661 | 1316 |
| SFSR1210-2.8 | 10 | 2.5 | 24 | 40 | 10 | 48.5 | 32 | 30 | 4.5 | M6x1 | 2.8x1 | 642 | 1287 | |
| SFSR1605-3.8 | 15 | 5 | 2.778 | 28 | 48 | 10 | 38 | 38 | 40 | 5.5 | M6x1 | 3.8x1 | 1112 | 2507 |
| SFSR1610-2.8 | 10 | 2.778 | 28 | 48 | 10 | 47 | 38 | 40 | 5.5 | M6x1 | 2.8x1 | 839 | 1821 | |
| SFSR1616-1.8 | 16 | 2.778 | 28 | 48 | 10 | 45 | 38 | 40 | 5.5 | M6x1 | 1.8x1 | 552 | 1137 | |
| SFSR1616-2.8 | 16 | 2.778 | 28 | 48 | 10 | 61 | 38 | 40 | 5.5 | M6x1 | 2.8x1 | 808 | 1769 | |
| SFSR1620-1.8 | 20 | 2.778 | 28 | 48 | 10 | 57 | 38 | 40 | 5.5 | M6x1 | 1.8x1 | 554 | 1170 | |
| SFSR2005-3.8 | 20 | 5 | 3.175 | 36 | 58 | 10 | 40 | 47 | 44 | 6.6 | M6x1 | 3.8x1 | 1484 | 3681 |
| SFSR2010-3.8 | 10 | 3.175 | 36 | 58 | 10 | 60 | 47 | 44 | 6.6 | M6x1 | 3.8x1 | 1516 | 3833 | |
| SFSR2020-1.8 | 20 | 3.175 | 36 | 58 | 10 | 57 | 47 | 44 | 6.6 | M6x1 | 1.8x1 | 764 | 1758 | |
| SFSR2020-2.8 | 20 | 3.175 | 36 | 58 | 10 | 77 | 47 | 44 | 6.6 | M6x1 | 2.8x1 | 1118 | 2734 | |
| SFSR2505-3.8 | 25 | 5 | 3.175 | 40 | 62 | 10 | 40 | 51 | 48 | 6.6 | M6x1 | 3.8x1 | 1650 | 4658 |
| SFSR2510-3.8 | 10 | 3.175 | 40 | 62 | 12 | 65 | 51 | 48 | 6.6 | M6x1 | 3.8x1 | 1638 | 4633 | |
| SFSR2520-2.8 | 20 | 3.969 | 40 | 62 | 12 | 72 | 51 | 48 | 6.6 | M6x1 | 2.8x1 | 1206 | 2695 | |
| SFSR2525-1.8 | 25 | 3.175 | 40 | 62 | 12 | 70 | 51 | 48 | 6.6 | M6x1 | 1.8x1 | 843 | 2199 | |
| SFSR2525-2.8 | 25 | 3.175 | 40 | 62 | 12 | 95 | 51 | 48 | 6.6 | M6x1 | 2.8x1 | 1232 | 3421 | |
| SFSR3205-3.8 | 32 | 5 | 3.175 | 50 | 80 | 12 | 42 | 65 | 62 | 9 | M6x1 | 3.8x1 | 1839 | 6026 |
| SFSR3210-3.8 | 31 | 10 | 3.969 | 50 | 80 | 13 | 62 | 65 | 62 | 9 | M6x1 | 3.8x1 | 2460 | 7255 |
| SFSR3220-2.8 | 20 | 3.969 | 50 | 80 | 12 | 80 | 65 | 62 | 9 | M6x1 | 2.8x1 | 1907 | 5482 | |
| SFSR3232-1.8 | 32 | 3.969 | 50 | 80 | 13 | 84 | 65 | 62 | 9 | M6x1 | 1.8x1 | 1257 | 3426 | |
| SFSR3232-2.8 | 32 | 3.969 | 50 | 80 | 13 | 116 | 65 | 62 | 9 | M6x1 | 2.8x1 | 1838 | 2329 | |
| SFSR4005-3.8 | 40 | 5 | 3.175 | 63 | 93 | 15 | 45 | 78 | 70 | 9 | M8x1 | 3.8x1 | 2018 | 7589 |
| SFSR4010-3.8 | 38 | 10 | 6.35 | 63 | 93 | 14 | 63 | 78 | 70 | 9 | M8x1 | 3.8x1 | 5035 | 13943 |
| SFSR4020-2.8 | 20 | 6.35 | 63 | 93 | 14 | 82 | 78 | 70 | 9 | M8x1 | 2.8x1 | 3959 | 10715 | |
| SFSR4040-1.8 | 40 | 6.35 | 63 | 93 | 15 | 105 | 78 | 70 | 9 | M8x1 | 1.8x1 | 2585 | 6648 | |
| SFSR4040-2.8 | 40 | 6.35 | 63 | 93 | 15 | 145 | 78 | 70 | 9 | M8x1 | 2.8x1 | 3780 | 10341 | |
| SFSR5005-3.8 | 50 | 5 | 3.175 | 75 | 110 | 15 | 45 | 93 | 85 | 11 | M8x1 | 3.8x1 | 2207 | 9542 |
| SFSR5010-3.8 | 48 | 10 | 6.35 | 75 | 110 | 18 | 68 | 93 | 85 | 11 | M8x1 | 3.8x1 | 5638 | 17852 |
| SFSR5020-3.8 | 20 | 6.35 | 75 | 110 | 18 | 108 | 93 | 85 | 11 | M8x1 | 3.8x1 | 5749 | 18485 | |
| SFSR5050-1.8 | 50 | 6.35 | 75 | 110 | 18 | 125 | 93 | 85 | 11 | M8x1 | 1.8x1 | 2946 | 8749 | |
| SFSR5050-2.8 | 50 | 6.35 | 75 | 110 | 18 | 175 | 93 | 85 | 11 | M8x1 | 2.8x1 | 4308 | 13610 | |
Product Display
High precision surface treatment:
The SFAR series nuts use a grinding process, which makes the surface accuracy of the inner raceway of the nut extremely high. By grinding, the roughness of the raceway surface can be reduced to a small degree, thus ensuring that the contact between the ball and the raceway is tighter and smoother. For example, its surface roughness Ra value may reach 0.2-0.4 μm, which is a high-precision surface that can effectively reduce the vibration and noise of the ball during rolling.
Dimensional accuracy:
The grinding process also enables precise control of the dimensional accuracy of the nut. In the manufacturing process, the strict grinding process can ensure that the inner diameter of the nut, the outer diameter and the dimensional tolerance of the raceway are controlled within a very small range. This is essential for a precise fit with the ball screw to improve the accuracy and stability of the entire ball screw drive system.
Load capacity and life:
Reasonable ball configuration makes SFAR series nuts have good load capacity. The number, size and distribution of balls are optimized to withstand large axial and radial loads. At the same time, due to the good contact between the ball and the ground raceway, the wear is reduced, thus extending the service life of the nut. Under normal conditions of use, its service life may be 30%-50% higher than that of ordinary nuts.
High transmission efficiency:
Because the grinding process reduces the friction coefficient between the ball and the raceway, the SFAR series nuts have a higher transmission efficiency when combined with the ball screw. Under normal circumstances, the transmission efficiency can reach more than 90%. This means that less energy is lost during power transmission, and the rotating motion of the screw can be effectively converted into the linear motion of the nut.
Precise positioning accuracy:
The high precision grinding of the nuts and the precise configuration of the balls enable the SFAR series to achieve precise positioning. In the equipment with high precision requirements, such as the feed system of precision machine tools, the adjustment device of precision instruments, etc., the positioning accuracy can reach the micron level, which can meet the strict requirements of high-precision equipment for position control.
Size & Interface
SFA series specification size
Quality Control
SFAR series ball grinding nuts have strict quality control, covering raw material inspection, high-precision processing monitoring, assembly and performance testing. The raw materials are inspected in multiple ways to ensure that the composition of high-quality alloy steel is compliant and without defects. In the processing, advanced equipment and skilled workers cooperate to use precision grinding technology to strictly control the internal raceway and various dimensional tolerances of the nut. The surface roughness reaches 0.2-0.4μm and the dimensional tolerances are extremely small. The ball screening is strict, the control diameter tolerance is within ±0.002mm, and the roundness error is less than 0.001mm. During assembly, the number, size and distribution of balls are optimized according to the standard process. The finished product has undergone comprehensive performance testing, simulated a variety of conditions to test load capacity, transmission efficiency and positioning accuracy, to ensure that the axial and radial load bearing capacity is up to the standard, the transmission efficiency is over 90%, and the positioning accuracy is up to micron level, to ensure stable and reliable product quality, and to meet the high-precision needs of precision machine tools, instruments, automatic production lines and other fields.
Application Cases
Precision machine tools: SFAR series ball grinding nuts are used in combination with ball screws in the table feed system and tool feed system of precision machine tools. For example, in the transverse and longitudinal feed mechanism of the tool in the CNC lathe, it can precisely control the displacement of the tool to achieve high-precision parts processing.
Precision instrument equipment: used for optical instruments, electron microscopes and other precision instrument adjustment mechanism. In these devices, it is necessary to accurately adjust the position of the lens, sample table and other components, and SFAR series nuts can provide high-precision and low-noise displacement adjustment functions to ensure the performance and measurement accuracy of the instrument.
Automated production line: In the high-precision motion unit of the automated production line, such as the joint motion control of the automated assembly robot, high-precision material handling device, etc., SFAR series nuts can improve the accuracy and efficiency of the movement, and meet the requirements of the production line for product quality and production speed.
Company Introduction
Zhejiang Jianzhuang Transmission Technology Co., Ltd.
The company focuses on the industry for more than ten years, specializing in the production of ball screw, grinding screw, nut, linear guide, roller guide, slider, module support base and other products manufacturers, is a research and development, production, sales, trade as one of the modern enterprise, with a complete and scientific quality management system.
The company's products are widely used in various high-tech industries: CNC machine tools, automation, laser, medical equipment, textile woodworking and electronic products.
Zhejiang Robust transmission is the second production base of SHAC, the brand comes from quality, integrity to win trust,17 years of craftsmanship only for the screw and guide rail more durable, more precise and more professional, to meet the needs of the market. Welcome friends at home and abroad to visit, guidance and business negotiations!
Service
Precision ball screw manufacturer service: the whole intimate companionship, professional casting excellence
Before sales, senior experts customize the selection scheme and application blueprint according to your needs, and in-depth consultation helps decision-making. During the sale, the dedicated ambassador follows up the order throughout the process, and works with top logistics for efficient delivery, with detailed installation and commissioning guidelines and remote guidance. After sale, 24-hour hotline response, or remote quick problem solving, regular return visit to optimize service. Provide systematic technical training, integrating theory and practice. Value-added services cover custom design, product upgrading and overall equipment optimization, and join hands to create industrial brilliance.
