A pulley could be caused to rotate by creating longitudinal vibrations in a cord that passes over the pulley. For little amplitudes and high frequencies, the movement of the cord is certainly too small to note and the pulley seems to be spinning without cause, creating a striking effect. Pulley rotations were observed for a number of pulleys and cords; almost any such program will work. The swiftness and direction of the rotation depends on the various physical parameters of the machine: vibration frequency and amplitude, cord pressure, and the radius and second of inertia of the pulley.
Welded pulley:
While welded pulley is welded and machined parts pieces right into a whole, the machining and materials cost is high.

Spinning pulley:
Spinning pulley used stamping and spinning technology, through the production process, it really is formed simply by extruding the complete part material. 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. Today this pulley is certainly well liked in the high-end marketplace in the auto industry, home appliances industry, machinery sector ETC. We are haapy that you ask for 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/Special Features:
V-belt spinning pulley steel pulley split pulley for yard mower
Material: warm rolled steel plate
Thickness: 4.0mm
Out diameter: 122mm
Weight: 0.390kg
V-Belt type: SPB
Surface area 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 Grab Clamp with Spinning Pulley is flexible and fast, and thanks to 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-key lock for extra security 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 Grab Clamp with 100mm Spinning Pulley
About Ever-powerGrab Clamp
The C339SP is fitted with a 100mm diameter pulley to offer a quick and robust hanging point for TV and theatre sceneries. The grab clamp has been designed to be mounted on a wide variety of beams, pipes and pubs, whether round, sq ., or rectangular in section. It needs no adapter – just open and clamp it.