BNF

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Standard

GB,ASTM/AISI,ГОСТ,BS,JIS,NF,DIN / VDEh,DIN / VDEh

Lead (Ph)

5mm-12mm

Ball center-to-center diameter (dp)

16.75mm-51.75mm

Thread minor diameter (dc)

13.2mm-44.4mm

Material

Carbon Steel, Bearing Steel, Stainless Steel

Brand

QIBR/OEM/Neutral

Package

QIBR/Standard Industrial Package/OEM

Applications

Machine Tools, Precision Instruments, Semiconductor, Aerospace, Printing Machinery, Medical Devices

BNF

Filters

NO. Product Product Number Ball center-to-center diameter (dp) Lead (Ph) No. of loaded circuits rows X turns Screw shaft outer diameter (d) Thread minor diameter (dc)
1 BNF BNF 1605-2.5 16.75 mm 5 mm 1X2.5 16 mm 13.2 mm
2 BNF BNF 1810-2.5 18.8 mm 10 mm 1X2.5 18 mm 15.5 mm
3 BNF BNF 2005-5 20.75 mm 5 mm 2X2.5 20 mm 17.2 mm
4 BNF BNF 2505-5 25.75 mm 5 mm 2X2.5 25 mm 22.2 mm
5 BNF BNF 2510A-2.5 26.3 mm 10 mm 1X2.5 25 mm 21.4 mm
6 BNF BNF 2806-5 28.75 mm 6 mm 2X2.5 28 mm 25.2 mm
7 BNF BNF 3205-5 32.75 mm 5 mm 2X2.5 32 mm 29.2 mm
8 BNF BNF 3206-5 33 mm 6 mm 2X2.5 32 mm 28.4 mm
9 BNF BNF 3210A-5 33 mm 10 mm 2X2.5 32 mm 26.4 mm
10 BNF BNF 3610-5 37.75 mm 10 mm 2X2.5 36 mm 30.5 mm
11 BNF BNF 4010-5 41.75 mm 10 mm 2X2.5 40 mm 34.4 mm
12 BNF BNF 4012-5 42 mm 12 mm 2X2.5 40 mm 34.1 mm
13 BNF BNF 5010-5 51.75 mm 10 mm 2X2.5 50 mm 44.4 mm

Features and advantages of ball screw BNF series

The BNF series ball screw has many significant features and advantages, playing a key role in various fields, mainly reflected in the following aspects:

1. High efficiency

The working principle of the BNF series ball screw is that the steel balls roll inside the screw threads and nuts, reducing friction and thus providing a higher transmission efficiency.

2. Low friction and long life

The BNF series ball screw transmits power through rolling friction rather than sliding friction, so it has a lower friction coefficient, reducing energy loss, and has less wear and tear, extending its service life. The rolling friction when the ball contacts the thread generates much less heat than sliding friction and lowers the temperature rise, thus improving its durability and stability.

3. High precision

The BNF series ball screws can achieve high-precision motion control and are often used in applications that require precise positioning, such as CNC machine tools, precision instruments, etc.

4. Low noise and vibration

The rolling friction characteristics of the ball screw allow it to operate with low noise and vibration. Especially in high-load and high-speed applications, it can effectively reduce the noise and vibration of the mechanical system and maintain the stability and precision of the equipment.

The performance improvement and solutions of ball screw BNF series 

1. Improve accuracy

By using high-precision processing equipment (such as CNC machine tools, grinders, etc.), it is possible to ensure that the geometry, dimensional accuracy and surface roughness of the screw and ball track reach a higher level.

2. Reduce friction and improve transmission efficiency

The use of high-performance lubricants and greases can reduce friction, improve transmission efficiency, reduce temperature rise and extend service life.

Improve the lubrication design of the ball track: By rationally designing the contact angle and contact method between the ball and the track and adopting an appropriate lubrication system, it is possible to reduce wear while ensuring efficiency.

3. Torsion resistance and stability

The bending and torsion resistance of ball screws can be improved by improving the size ratio of the screw or using high-strength materials.

4. Reduce gap and backlash control

Adjust the nut clearance: During the use of the ball screw, the clearance will cause distortion and vibration. By optimizing the nut structure and adjusting the gap between the nut and the ball, the backlash (i.e. reverse clearance) can be effectively reduced, thereby improving motion accuracy and response speed.

Main application areas of ball screw BNF series

1. CNC machine tools

Ball screws are used in feed systems in CNC machine tools to provide high-precision positioning and motion control.

2. Precision measuring equipment

Ball screws can provide stable linear drive and are widely used in equipment such as coordinate measuring machines.

3. Automation equipment

Ball screws are used in automation equipment to drive moving parts and control the positioning and delivery of materials.

4. Aerospace

Ball screws are used in various precision control systems in the aerospace field, such as satellite control, spacecraft attitude adjustment, etc.