A pulley can 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 definitely too small to notice and the pulley seems to be spinning without cause, creating a impressive effect. Pulley rotations were noticed for a number of pulleys and cords; nearly 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 pressure, and the radius and moment of inertia of the pulley.
Welded pulley:
While welded pulley is welded and machined parts items into a whole, the machining and materials cost is high.

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

V-belt Spinning Pulley, Metal Pulley, Split Pulley for Lawn 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: incredibly 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 Get clamp with spinning pulley
The Ever-powerC339JS Get Clamp with Spinning Pulley is flexible and fast, and because of its pincer jaw design could be affixed to a wider variety of round or sq . pipes, beams and bars than traditional clamps. It includes a push-button lock for extra protection and 3.9″ pulley for raising drapes or other articles in TV, video and photographic studios and theaters. The Grab Clamp will hold up to 331 lb.
PRODUCT HIGHLIGHTS
– Zinc-Plated Steel Construction
– 3.9″ Pulley
– Load Capacity: 331 lb / 150 kg
Ever-power Get 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 made to be installed on a wide variety of beams, pipes and bars, whether round, square, or rectangular in section. It needs no adapter – just open up and clamp it.