A pulley could be caused to rotate by creating longitudinal vibrations in a cord that passes over the pulley. For small amplitudes and high frequencies, the movement of the cord is certainly too small to notice and the pulley appears to be spinning with no cause, creating a impressive impact. Pulley rotations were noticed for a number of pulleys and cords; almost any such program will work. The rate and path of the rotation depends on the many physical parameters of the system: vibration frequency and amplitude, cord stress, and the radius and minute of inertia of the pulley.
Welded pulley:
While welded pulley is welded and machined parts parts right into a whole, the machining and material cost is high.

Spinning pulley:
Spinning pulley adopted stamping and spinning technology, through the production process, it is formed by extruding the whole part materials. These pulleys have high production efficiency. Not merely can it save recycleables and price, but also can be utilized longer because of its better wear-resisting and rust-proof. Now this pulley is usually well liked in the high-end marketplace in the auto sector, kitchen appliances industry, machinery market ETC. We are haapy that you request our mature and professional spinning technology.

V-belt Spinning Pulley, Steel Pulley, Split Pulley for Yard Mower
Product Details
Model Number:P100-42 10016
Brand Name:Renchi
Origin:China (mainland)
Key Specifications/Particular Features:
V-belt spinning pulley metal pulley split pulley for lawn mower
Material: hot rolled steel plate
Thickness: 4.0mm
Out diameter: 122mm
Weight: 0.390kg
V-Belt type: SPB
Surface treatment: zinc plated yellow
Primary Competitive Advantages:
Prompt Delivery
Quality Approvals
Service
Small Orders Accepted
Origin
Experienced Staff
Form A
Green Product
Price
Ever-power C339SP Grab clamp with spinning pulley
The Ever-powerC339JS Get Clamp with Spinning Pulley is flexible and fast, and thanks to its pincer jaw design can be affixed to a wider variance of round or sq . pipes, beams and bars than traditional clamps. It includes a push-key lock for extra safety and 3.9″ pulley for raising drapes or other articles in TV, video and photographic studios and theaters. The Get Clamp will hold up to 331 lb.
PRODUCT HIGHLIGHTS
– Zinc-Plated Steel Construction
– 3.9″ Pulley
– Load Capability: 331 lb / 150 kg
Ever-power Grab Clamp with 100mm Spinning Pulley
About Ever-powerGrab Clamp
The C339SP is fitted with a 100mm diameter pulley to provide a quick and robust hanging point for TV and theatre sceneries. The get clamp has been designed to be installed on an array of beams, pipes and bars, whether round, square, or rectangular in section. It needs no adapter – just open up and clamp it.