A sprocket,sprocket-wheel or chainwheel is a profiled wheel with teeth that mesh with a chain, track or other perforated or indented material.The name 'sprocket' applies generally to any wheel upon which radial projections engage a chain passing over it. It is distinguished from a gear in that sprockets are never meshed together directly, and differs from a pulley in that sprockets have teeth and pulleys are smooth except for timing pulleys used with toothed belts.

Sprockets are used in bicycles, motorcycles, tracked vehicles, and other machinery either to transmit rotary motion between two shafts where gears are unsuitable or to impart linear motion to a track, tape etc. Perhaps the most common form of sprocket may be found in the bicycle, in which the pedal shaft carries a large sprocket-wheel, which drives a chain, which, in turn, drives a small sprocket on the axle of the rear wheel. Early automobiles were also largely driven by sprocket and chain mechanism, a practice largely copied from bicycles.

Sprockets are of various designs, a maximum of efficiency being claimed for each by its originator. Sprockets typically do not have a flange. Some sprockets used with timing belts have flanges to keep the timing belt centered. Sprockets and chains are also used for power transmission from one shaft to another where slippage is not admissible, sprocket chains being used instead of belts or ropes and sprocket-wheels instead of pulleys. They can be run at high speed and some forms of chain are so constructed as to be noiseless even at high speed.

Q1: What information will be highly appreciated for a quotation?

A: It will be preferred if you can offer us the drawings, heat treatment and surface treatment requirements, required quantity, quoted currency (USD or CNY), or samples.

Q2: Are you a trading company or factory?

A: Vanhon is a trading and factory located in Qingdao, Shandong.

Q3: What is your terms of payment?

A: T/T 50% in advance, and 50% before shipment. We'll show you the photos of the products and packages before you pay the balance.

Q4: Do you test all your goods before delivery?

A: Yes, Vanhon has adopted a strict quality management system and all the items will be inspected according to the inspection instruction with good inspection records.

Q5: How does your company ensure the quality of the raw material?

A: The steels are purchased from our domestic well-known steel mills. After receiving the raw material, the steel will be inspected by spectrograph imported from Germany. Besides, the furnace number of steel will be well-managed in our ERP system to ensure the traceability of our products.

Q6: How do you ensure the high quality of products?

A: With integral manufacturing processes, a strict quality control system and imported machines, we can manufacture high quality products.