When to choose Ball Screw Jacks vs. ACME Machine Screw Jacks?

Worm Gear Screws Jacks can provide long duty life, high load capacity and flexible design. Its two major categories ball screw jack and acme machine screw jack are common used screw jacks. How to determine which one is suitable for your application? There are some tips for you.
Ball Screw Jacks use a ball screw and nut made from hardened alloy steel with bearing balls carrying the load between nut & screw. This rolling action reduces the friction between nut and screw, permitting smooth and efficient load movement that requires approximately 1/3 less torque than a machine screw jack with the same load.
Ball Screw Jacks
Machine Screw Jacks incorporate an alloy or sometimes stainless steel worm which drives a high strength bronze worm gear, or drive sleeve. The worm shaft is supported on anti-friction tapered roller bearings with external seals that prevent lubrication loss. The drive sleeve can also be supported on tapered roller bearings, or ball thrust bearings. Rotation of the drive sleeve causes the acme thread lifting screw to translate or rotate, depending on the jack configuration.
Because of their efficiency and lower power requirements, Ball Screw Jacks are often preferred. However, several factors can make Machine Screw Jacks preferable. For quick reference …
Machine Screw Jacks are best used for:
• Resistance to backdriving
• Environments with vibration
• Manual operation
• High static loads
• Corrosion resistance (with stainless steel versions)
Ball Screw Jacks are preferred for:
• Long travel lengths
• Long, predictable life
• High duty cycles
• Oscillating motion
Well,hope the above information can help you to choose suitable screw jacks. After determine which kind of  screw jacks, you can choose suitable types(like Upright, Inverted, Upright Rotating and Inverted Rotating),you can also come to learn How to choose suitable screw jack for further information.

评论

发表评论

此博客中的热门博文

Screw Jack Screw Top End Type & Function

图片
Our commonly used worm gear screw lifts have a total of four screw top end types: plain end, top plate, threaded, and clevis end. These four functions are different, and customers can choose different end types according to their actual use. Worm gear screw lifts are divided into two types according to the structural form. Type I namely translating type, above four end types are available, Type II,namely rotating type, only plain end and threaded end are available . The reason why the type II has no top plate type and clevis end type is because for the type II copper nut must be installed. After installation, the flange or clevis end can no longer be installed. Now let’s see the functions of the four types of screw top end: Plain end type, can be installed on the fixed bearing; top plate type, can directly lift the object , but the flange also can be connected with other equipment; Threaded end type, can be connected with other equipment through the thread, us
阅读全文

Electric Linear Actuator for Sluice Gate

图片
The electric linear actuator is a device that converts the rotational motion of an electric motor into linear motion (push or pull movement) and it can be used anywhere a machine pushes or pulls a load, raises or lowers a load, roughly positions a load, or rotates a load. It is has similar function as worm gear screw jack. As we have mentioned in early articles , t he trapezoidal worm gear screw jack can be used for sluice gate. In fact, electric linear actuator can also be used for sluice gate, usually it is light duty gate. The following picture shows l ighter duty Stainless Steel or Aluminum frames and blades using a compact controller system and Linear Actuators . Designed especially for On-Farm canal  and irrigation control, Check and Delivery gates, where the heaviest duty frame and actuator system is not required.
阅读全文

Philippine customer screw jack installation site

图片
  Customized screw jack with a stroke length of 4360mm. Thanks to Philippine customers for providing us with real photos of on-site installation. More details on www.ludetransmission.com . Our company can customize long-stroke screw jack products. If necessary, welcome to consult. We will provide you with products with high quality and competitive price.
阅读全文