Welcome to Wenzhou Lianggang Pipe Fitting Valve Co., Ltd., a leading manufacturer of high-quality stainless steel pipe fittings and valves. We specialize in producing a wide range of products including elbows, tees, sockets, hex nipples, unions, plugs, caps, hose nipples, street elbows, and ball valves. Our products are made from premium materials like SS201, SS304, and SS316, ensuring durability and reliability for various industrial applications.
All our products are manufactured under strict quality control standards and are suitable for use in water supply, gas pipelines, chemical processing, and more. Whether you're looking for standard or custom fittings, we offer competitive pricing and fast delivery. Contact us today to discuss your needs and get a personalized quote.
For any inquiries, feel free to reach out to our sales representative, Zoe, at your convenience. We look forward to serving you!
Precision Ball Screws,High-Performance Screws,Industrial Ball Screws, linear motion ballscrews Suzhou Industrial Park Hojama Technology Co., Ltd , https://www.hojama-tech.com
OUR COMPANY HOT-SALE PRODUCTS:
ELBOW, TEE, SOCKET, HEX NIPPLE,
UNION (WITH TEFL OR TAPER),
SQUARE PLUG, ROUND CAP, HOSE NIPPLE,
STREET ELBOW, STREET SOCKET,
R.ELBOW, R.TEE, R. SOCKET, R. NIPPLE, BUSHING
1PC BALL VALVE, 2PC BALL VALVE, 3PC BALL VALVE.
SALESMAN: ZOE
Hojama precision ball screws
How to determine the preload of a ball screw?
Excessively tight or loose preload of the ball screw
Stainless Steel Pipe Fitting SS304 BSPT NPT Thread Screw Union 1/4inch
Model No.: 1/4 inch
Trademark: CVIP
Specification: DN8
Origin: China
HS Code: 7307290000
WENZHOU LIANGGANG PIPE FITTING VALVE CO.,LTD
SS201, SS304, SS316:
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Materials: Bearing steel and stainless steel are recommended.
Precision grade: C3/C5 (repeatable position accuracy is up to 8μm.)
Diameter: >16mm
Thread direction: Left-hand/Right-hand
Circulation method:Â Internal circulation
Determination of Ball Screw Preload
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Applying preload to the nut in a ball screw assembly can enhance the axial stiffness and positioning accuracy of the ball screw pair. Therefore, if only considering the stiffness and positioning accuracy of the ball screw pair, a larger preload is more beneficial, as it can better eliminate axial clearance caused by elastic deformation. Conversely, an excessively small preload, even if it eliminates axial clearance, does not necessarily improve stiffness.
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This is because the preload must be sufficient to eliminate the "low-stiffness zone" in the preloaded nut. Due to inherent errors (such as lead errors) between the ball screw shaft and nut components in the preloaded section of a double-nut assembly, some segments may exhibit higher contact stiffness after deformation (due to tighter contact), while others may show lower stiffness (due to looser contact). The latter is what is referred to as the "low-stiffness zone." To improve axial contact stiffness, the preload must be large enough to eliminate such low-stiffness zones, thereby truly achieving enhanced axial stiffness.
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However, an excessively large preload is also detrimental. It will increase the driving torque, reduce transmission efficiency, accelerate contact fatigue and wear between balls and raceways, and shorten the service life.
Causes of Backlash in Ball Screws
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1. Large manufacturing errors of the ball screw or axial movement
2. Excessively tight or loose pressure plate in the fit between the screw shaft and slide plate
3. Interference from other mechanical components
4. Loose taper sleeve of the screw shaft coupling
5. Excessively tight or loose preload of the ball screw support bearing
6. Excessively tight or loose wedge in the fit between the ball screw shaft and slide plate